twin disc

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TWIN DISCINCORPORATED

®T DWIN ISC

Power Take-Off

Model:

SP14

ServiceManual

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NOTICETwin Disc, Incorporated makes no warranty or guaranty of any kind, expressed, implied or otherwise, with regard to the

information contained within this manual. Twin Disc,Incorporated has developed this manual through researchand testing of the information contained therein. Twin Disc,Incorporated assumes no responsibility for any errors thatmay appear in this manual and shall not be liable under anycircumstances for incidental, consequential or punitivedamages in connection with, or arising out of, the use of thismanual. The information contained within this manual issubject to change without notice.

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Document Number1022763

Issued

January, 2008

Power Take-off

Service Manual

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REVISION AND REISSUE DATA

Issued January, 2008

BEFORE YOU START

This manual replaces:#1015708 for use with model SP114P Series,#1021088 for use with model SP114P Series#1015998 for use with model SP214OP Series#1015999 for use with model SP114P Series,#1017533 for use with model SP214IL, SP314IL Series#1015486 for use with model SP314P Series,#1016066 for use with model SPE114P, SPE214P, SPE314P Series#1016619 for use with model SP314SB Series,#1020992 for use with model SP314P Series

#1019024 for use with model RFD214 & RFD314 Series

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LIMITED TWIN DISC GENERAL WARRANTY,LIMITATIONS OF REMEDIES AND LIMITATION OF OTHER WARRANTIES

A. Twin Disc, Incorporated warrants all assembled products and parts (except component products or parts on which writtenwarranties are issued by the respective manufacturers thereof and are furnished to the original customer, as to which TwinDisc, Incorporated makes no warranty and assumes no liability) against defective materials or workmanship. For productsand parts other than Rockford power take-offs, such warranty shall extend for a period of twenty-four (24) months from thedate of original shipment by Twin Disc, Incorporated to the original customer, but not to exceed twelve (12) months ofservice or two thousand (2,000) hours of service, whichever occurs first. This is the only warranty made by Twin Disc,Incorporated and is in lieu of any and all other warranties, express or implied, including the warranties ofmerchantability and fitness for a particular purpose and no other warranties are implied or intended to be given byTwin Disc, Incorporated.

The original customer does not rely upon any tests or inspections by Twin Disc, Incorporated or on Twin Disc,Incorporated's application engineering.

B. In consideration of the Limited Twin Disc General Warranty (hereafter called warranty) and price Twin Disc,Incorporated charges (which reflects Twin Disc, Incorporated's limited liability), the exclusive remedy provided byTwin Disc, Incorporated whether arising out of warranty within the applicable warranty period as specified, orotherwise (including tort liability), shall at the sole option of Twin Disc, Incorporated be either the repair orreplacement of any Twin Disc, Incorporated part or product found by Twin Disc, Incorporated to be defective (orequivalent credit). Under no circumstances, including a failure of the exclusive remedy, shall Twin Disc,Incorporated be liable for economic loss, consequential, punitive or incidental damages. The above warranty andremedy are subject to the following terms and conditions:

1. Complete parts or products upon request must be returned transportation prepaid and also the claims submitted toTwin Disc, Incorporated within sixty (60) days after completion of the in warranty repair.

2. The warranty is void if, in the opinion of Twin Disc, Incorporated, the failure of the part or product resulted fromabuse, neglect, improper maintenance or accident.

3. The warranty is void if any modifications are made to any product or part without the prior written consent of TwinDisc, Incorporated.

4. The warranty is void unless the product or part is properly transported, stored and cared for from the date of shipmentto the date placed in service.5. The warranty is void unless the product or part is properly installed and maintained within the rated capacity of the

product or part with installations properly engineered and in accordance with the practices, methods and instructionsapproved or provided by Twin Disc, Incorporated.

6. The warranty is void unless all required replacement parts or products are of Twin Disc origin or are Twin Discauthorized replacement parts, and otherwise identical with components of the original equipment. Replacement partsor products not of Twin Disc origin are not warranted by Twin Disc, Incorporated.

C. As consideration for this warranty, the original customer and subsequent purchaser agree to indemnify and hold Twin Disc,Incorporated harmless from and against all and any loss, liability, damages or expenses for injury to persons or property,including without limitation, the original customer's and subsequent purchaser's employees and property, due to their acts oromissions or the acts or omissions of their agents, and employees in the installation, transportation, maintenance, use andoperation of said equipment.

D. Only a Twin Disc, Incorporated authorized factory representative shall have authority to assume any cost or expense in the

service, repair or replacement of any part or product within the warranty period, except when such cost or expense isauthorized in advance in writing by Twin Disc, Incorporated.

E. Twin Disc, Incorporated reserves the right to improve the product through changes in design or materials without beingobligated to incorporate such changes in products of prior manufacture. The original customer and subsequent purchaserswill not use any such changes as evidence of insufficiency or inadequacy of prior designs or materials.

F. If failure occurs within the warranty period, and constitutes a breach of warranty, repair or replacement parts will befurnished on a no charge basis and these parts will be covered by the remainder of the unexpired warranty which remains ineffect on the complete unit.

*Note The Above constitutes the basic Twin Disc, Incorporated General Limited Warranty and may be supplemented by additional publishedwarranty terms dependent upon the product involved. Supplementary warranty terms are available upon request.

December 14, 2007 TDWP0001 rev 2008

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NOTES

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7

Twin Disc, Incorporated Table of Contents

Power Take-Off Service Manual #1022763

Table of Contents

Introduction .......................................................... 11General Information ............................................................................ 11Replacement Parts.............................................................................. 12Preventive Maintenance/Troubleshooting......................................... 13Safety ................................................................................................... 14Sources of Service Information ......................................................... 15Warranty .............................................................................................. 16

Description and Specifications...........................17General Information ............................................................................ 17Finding the Twin Disc Power Take-Off Model Number and Serial

Number............................................................................................ 18Identifying the Twin Disc Power Take-off From Its Model Number.. 19Twin Disc Power Take-Off Reference Listing .................................... 20Twin Disc Power Take-Off Reference Listing (continued)................ 21Twin Disc Power Take-Off Reference Listing (continued)................ 22Twin Disc Power Take-Off Reference Listing (continued)................ 23Identifying the SAE Housing Size ...................................................... 24Specifications...................................................................................... 25Twin Disc PTO Support Plate Specifications .................................... 29Wear Limits.......................................................................................... 30Torque Values for Fasteners .............................................................. 35

Installation ............................................................39Installation Tips ................................................................................... 39Prior to Installation (Ref: SAE J1033 and J617) ................................ 44

Drive Ring Installation ........................................................................ 48Ball-Type Pilot Bearing Installation.................................................... 49Roller-Type Pilot Bearing Installation ................................................ 50PTO Installation to Engine or Driving Member ................................. 52Hand Lever Position for Twin Disc Power Take-Offs........................ 57Model SPE114, SPE214 and SPE314 Series Arm Adjustment Proce-

dure ................................................................................................. 58

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8

Twin Disc, IncorporatedTable of Contents


Position and Measure Alignment of the Sheave............................... 59Allowable Side Loads ......................................................................... 60Alignment - U-Joint-Type Installation ................................................ 74

Setting Up Air Engagement on Twin Disc Power Take Offs............. 76

Operation ..............................................................79General Information ............................................................................ 79Clutch Engagement Procedure.......................................................... 80

Maintenance .........................................................83Maintenance Tips ................................................................................ 83Lubrication .......................................................................................... 86

Clutch Adjustment .............................................................................. 89Friction Plate Replacement ................................................................ 90Field Adjustment - Tapered Roller Bearing End Play (side-loaded pto

applications) (Except SB Models) ................................................. 91Field Adjustment - Tapered Roller Bearing End Play - (In-Line pto

applications) ................................................................................... 92Field Adjustment - Checking Bearing End Play - Model SP314SB

Series Only...................................................................................... 93

Disassembly .........................................................95Power Take-off Removal From The Engine....................................... 96Clutch Removal ................................................................................... 98Clutch Disassembly ............................................................................ 99Bronze Collar Disassembly ................................................................ 99Ball Bearing Collar Disassembly ....................................................... 99Remove the Operating Shaft and Throwout Yoke........................... 101Clutch Shaft and Housing Disassembly - Configuration A ............ 103Clutch Shaft and Housing Disassembly - Configuration B............ 105

Clutch Shaft and Housing Disassembly - Configuration C & D..... 107Clutch Shaft and Housing Disassembly - Configuration E .............110Clutch Shaft and Housing Disassembly - Configurations F & G ....112Clutch Shaft and Housing Disassembly - Configurations H & I .....114Clutch Shaft and Housing Disassembly - Configuration J .............117

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9

Twin Disc, Incorporated Table of Contents


Cleaning and Inspection....................................119Cleaning and Inspection ....................................................................119

Assembly.............................................................123Clutch Assembly ............................................................................... 124Clutch Shaft and Housing Assembly - Configuration A ................. 131Clutch Shaft and Housing Assembly - Configuration B ................. 138Clutch Shaft and Housing Assembly - Configurations C & D ........ 145Clutch Shaft and Housing Assembly - Configuration E ................. 154Clutch Shaft and Housing Assembly - Configurations F & G ........ 157Clutch Shaft and Housing Assembly - Configurations H & I ......... 161Clutch Shaft and Housing Assembly - Configuration J.................. 168Install the Operating Shaft and Throwout Yoke. ............................. 171PTO Final Assembly.......................................................................... 173

Illustrations .........................................................177List of Illustrations ............................................................................ 177Parts Identification List - SP114, SPE114, SP214, SPE214, SP314,

SPE314, SP314SB, RFD214 and RFD314 Series ........................ 178Exploded View (SP114, SP214 and RFD214 Series Clutches) ...... 179

Exploded View (SP314 and RFD314 Series Clutches) .................. 180Exploded View (Configuration A) ..................................................... 181Exploded View (Configuration B)..................................................... 182Exploded View (Configuration C)..................................................... 183Exploded View (Configuration D)..................................................... 184Exploded View (Configuration E)..................................................... 185Exploded View (Configuration F) ..................................................... 186Exploded View (Configuration G) .................................................... 187Exploded View (Configuration H)..................................................... 188Exploded View (Configuration I) ...................................................... 189Exploded View (Configuration J) ..................................................... 190Exploded View (SPE114, SPE214 and SPE314 Series Throwout

Mechanism) .................................................................................. 191

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10

Twin Disc, IncorporatedTable of Contents


Engineering Drawings .......................................193SP114P101 Sheet 2 of 2 (Typical Configuration A) ......................... 195

XA7500 (Typical Configuration B) .................................................... 196

SP214P001 Sheet 2 of 2 (Typical Configuration C)......................... 197X9845 (Typical Configuration D) ...................................................... 198

SP314P121 Sheet 2 of 2 (Typical Configuration E) ......................... 199

SP214P121 Sheet 2 of 2 (Typical Configuration F) ......................... 200

SP314P123 Sheet 2 of 2 (Typical Configuration G)......................... 201

SP314S106 Sheet 2 of 2 (Typical Configuration H)......................... 202

SP314S117 Sheet 2 of 2 (Typical Configuration I)........................... 203

TR435469 Sheet 2 of 2 (Typical Configuration J) ............................ 204

SP214P003 Sheet 2 of 2.................................................................... 205

SP314P001 Sheet 2 of 2.................................................................... 206SP314P005 Sheet 2 of 2.................................................................... 207

SP114C001 Sheet 2 of 2.................................................................... 208

SP114C008 Sheet 2 of 2.................................................................... 209

SP214C001 Sheet 2 of 2.................................................................... 210

SP214C004 Sheet 2 of 2 .....................................................................211

SP214C011 Sheet 2 of 2.................................................................... 212

SP314C001 Sheet 2 of 2.................................................................... 213

SP314C010 Sheet 2 of 2.................................................................... 214

SP314C007 Sheet 2 of 2.................................................................... 215

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11

Twin Disc, Incorporated Introduction

Power Take-off Service Manual #1022763

Introduction

General Information

This publication provides the information necessary for the operation andmaintenance of the Twin Disc, Incorporated equipment specified on the coverof this manual. Specific engineering details and performance characteristicscan be obtained from the Product Service Department of Twin Disc,Incorporated, Racine, Wisconsin, USA.

Operation and maintenance personnel responsible for this equipment should

have this manual at their disposal and be familiar with its contents. Applyingthe information in the manual will result in consistent performance from theunit and help reduce downtime.

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12

Twin Disc, IncorporatedIntroduction


Replacement Parts

Parts Lists

See the engineering assembly drawings in Engineering Drawings, partsidentification and exploded views in the Illustration section to facilitate orderingspare or replacement parts.

Ordering Parts

All replacement parts or products (including hoses and fittings) mustbe of Twin Disc origin or equal, and otherwise identical with componentsof the original equipment. Use of any other parts or products will voidthe warranty and may result in malfunction or accident, causing injuryto personnel and /or serious damage to the equipment.

Renewal parts and service parts kits may be obtained from any authorizedTwin Disc distributor or service dealer.

Parts Shipment

Furnish the complete shipping information and postal address. All partsshipments made from the factory will be FOB factory location, USA. Statespecifically whether the parts are to be shipped by freight, express, etc. If shipping instructions are not specified, the equipment will be shipped thebest way, considering time and expense. Twin Disc, Incorporated will not beresponsible for any charges incurred by this procedure.

Twin Disc, Incorporated having stipulated the bill of material number on theunit’s nameplate absolves itself of any responsibility resulting from any

external, internal or installation changes made in the field without the expresswritten approval of Twin Disc. All returned parts, new or old, emanating fromany of the above-stated changes will not be accepted for credit. Furthermore,any equipment which has been subjected to such changes will not be coveredby a Twin Disc warranty.

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Preventive Maintenance/Troubleshooting

Frequent reference to the information provided in this manual regarding dailyoperation and limitations of this equipment will assist in obtaining trouble-free operation. Schedules are provided for the recommended maintenanceof the equipment and, if observed, minimum repairs (aside from normal wear)will result.

In the event a malfunction does occur, a troubleshooting table is provided tohelp identify the problem area and lists information that will help determine

the extent of the repairs necessary to get a unit back into operation.

Lifting Bolt Holes

Most Twin Disc products have provisions for attaching lifting bolts. The holesprovided are always of adequate size and number to safely lift the Twin Discproduct.

These lifting points must not be used to lift the complete power unit.Lifting excessive loads at these points could cause failure at the liftpoint (or points) and result in damage or personal injury.

Select lifting eyebolts to obtain maximum thread engagement with boltshoulder tight against housing. Bolts should be near but should not contact bottom of bolt hole.

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Safety

General

Safe practices must be employed by all personnel operating and servicingthis unit. Twin Disc, Incorporated will not be responsible for personal injuryresulting from careless use of hand tools, lifting equipment, power tools, orunaccepted maintenance/operating practices.

Important Safety Notice

Because of the possible danger to person(s) or property from accidents whichmay result from the use of manufactured products, it is important that correctprocedures be followed. Products must be used in accordance with theengineering information specified. Proper installation, maintenance, andoperation procedures must be observed. Inspection should be made asnecessary to assure safe operations under prevailing conditions. Properguards and other suitable safety codes should be provided. These devicesare neither provided by Twin Disc, Incorporated nor are they the responsibilityof Twin Disc, Incorporated.

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Sources of Service Information

Each series of manuals issued by Twin Disc, Incorporated is current at thetime of printing. When required, changes are made to reflect advancingtechnology and improvements in state-of-the-art.

Individual product service bulletins are issued to provide the field withimmediate notice of new service information.

For the latest service information on Twin Disc products, contact any TwinDisc distributor, or contact the Product Service Department, Twin Disc,

Incorporated, Racine, Wisconsin 53405-3698, USA by e-mail [email protected].

Contact information for Authorized Twin Disc Distributors and Service Dealerscan be found on the Twin Disc Web site at: http://www.twindisc.com.

mailto:[email protected]:[email protected]:[email protected]://www.twindisc.com/http://www.twindisc.com/http://www.twindisc.com/mailto:[email protected]

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Warranty

Equipment for which this manual was written has a limited warranty. Fordetails of the warranty, refer to the warranty statement at the front of thismanual.

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17

Twin Disc, Incorporated Description and Specifications


Description and Specifications

General Information

The SP114, SPE114, SP214, SPE214, SP314, SPE314, SP314SB, RFD214and RFD314 Series Twin Disc Power Take-Offs are engine-mounted powertake-offs that use cast iron one-piece or two-piece housings and contain anintegral clutch 14 inches in diameter. The engine drives the clutch through adrive ring that is bolted to the engine flywheel and connected to the clutch throughinternal teeth that mesh with external teeth on the clutch friction plates. Clutchengagement and disengagement for most units is accomplished by use of theexternal hand lever assembly. Some units may use other actuation methods.

Main bearings are lubricated and cooled with oil or grease, depending uponthe design specifications. Most units use pilot bearings that are pre-lubricatedand sealed for life, although some may require periodic relubrication. Thosethat require periodic relubrication are lubricated through a grease fitting locatedin the output end or side of the clutch shaft.

SPE models are designed with release mechanism features and a positiveclearance mechanism to provide “extended service” and “limited attendance”advantages.

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Twin Disc, IncorporatedDescription and Specifications


Finding the Twin Disc Power Take-Off Model Number and Serial Number

The nameplate identifies the model, bill of material (BOM) and the serial numberof the unit. These numbers are necessary to identify the correct parts for yourPower Take-Off.

BOM No.

S/N

Model No.

Information andinstructions

specific to each

individual PTO.

Figure 1. Representative Instruction Plate

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Identifying the Twin Disc Power Take-off From Its Model Number

Typical Model Identification Number: SP114P-1

SP 1 14 P - 1

A B C D E { { { { {

A. Indicates the type of clutch.SP = Counter balanced, toggle action overcenter clutchSPE = SP model for extended serviceRFD = Rockford design with combination Twin Disc and Rockford

designed components

B. Indicates the number of friction plates in the clutch.1 = 1 clutch friction plate2 = 2 clutch friction plates3 = 3 clutch friction plates

C. Indicates the nominal size of the clutch friction plates (inches).14 = 14” diameter (nominal), measured just inside the root of the teeth

D. Indicates the housing design.P = standard (grease lubricated) main bearingsOP = oil lubricated main bearingsIL = main bearings for in-line duty onlySB = straddle bearing design

E. Indicates the S.A.E. housing size.0 = SAE # 0 housing1 = SAE # 1 housing2 = SAE # 2 housing

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Twin Disc Power Take-Off Reference Listing

The Twin Disc Power Take-Off Reference Listing on the following pages refersto various basic design configuration designations used for the main bearinghousing. These designations are used primarily to simplify explanation of thedisassembly and assembly procedures in this manual. The following chartprovides a general description of the basic features of each configuration andalso provides general information regarding each Twin Disc Power Take-Off.However, always refer to a current BOM for your specific power take-off toinsure that the most up-to-date information is being used.

A B C D E F G H I J

Main Housing and Bearing Carrier

1-piece X X X

2-piece (Separate Items) X X X X X

2-Piece straddle bearing design X X

Assembly of Main Bearings

From opposite ends of shaft X X X X X X

(Both) from one end of shaft X X X X

Retention of Main Bearing(s)

Retained by bearing retainer(s) X X X X X X X X X

Retained by snap ring(s) X

Bearing Retainer

Threaded X X X X X X X

Bolted X

Neither bolted or threaded X X

Both front and rear retainers used X X X

None used X

Retention of Bearing Retainer

Retained by lock tab X X X X X

Retained by snap ring(s) X XRetained by bolts X X X

Not Applicable X

Main Bearing Adjustment

Rotate bearing retainer X X X X X

No adjustment X X X X X X

Oil Seals in Housing or Brg. Carrier X

Wear Sleeve(s) on Shaft X

ConfigurationFeature

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Twin Disc Power Take-Off Reference Listing (continued)

G r e a s e

O i l

B r o n z e

B a l l

C a s t I r o n

N o d u l a r

Main Bearing

Lubrication

Throwout

Collar Type

Pilot Bearing

Type

Drive Ring

Type Main Bearing

Housing

Configuration

B a l l

R o l l e r

Facing

Type

S p l i t

S o l i d

S u p p o r t P l a t e R e q ’ d

SP114P0 SP114P001 X X X X X A




SP114P1 SP114P103 X X X X A



SP114P1 SP114P107 X X X X ASP114P1 SP114P108 X X X X X A







SP214P0 SP214P001 X X X X X X C

SP214P0 SP214P002 X X X X X C

SPE214P0 SP214P003 X not used X X X X C


SP214P0 SP214P006 X X X X CSP214P0 SP214P007 X X X X X C



SP214P1 SP214P103 X X X X C



SP214P1 SP214P109 X X not used X X B








SP214IL1 SP214P121 X X not used X X X F


SP214OP1 SP214P125 X X X X X X D





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G r e a s e

O i l

B r o n z e

B a

l l

C a s

t I r o n

N o

d u

l a r

Main Bearing

Lubrication

Throwout

Collar Type

Pilot Bearing

Type

Drive Ring

Type Main Bearing

Housing

Configuration

B a

l l

R o

l l e r

Facing

Type

S p

l i t

S o

l i d

S u p p o r t

P l a t e R

e q

’ d








SP214P1 SP214P142 X X X X X CSP314P0 SP314P001 X X X X X C


























SP314IL1 SP314P121 X X X X X X E


SP314OP1 SP314P123 X X not used X X X G


SP314IL1 SP314P125 X X X X X X E


SP314OP1 SP314P127 X X not used X X X G

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G r e a s e

O i l

B r o n z e

B a l l

C a s t I r o n

N o d u l a r

Main Bearing

Lubrication

Throwout

Collar Type

Pilot Bearing

Type

Drive Ring

Type Main Bearing

Housing

Configuration

B a l l

R o l l e r

Facing

Type

S p l i t

S o l i d

S u p p o r t P l a t e R e q ’ d

SP314SB1 SP314S106 X X not used X X X H






SP314SB1 SP314S117 X X not used X X X I







RFD214IL TR435469 X X X X X J

RFD214IL TR435469A X X X X X J

RFD214IL TR435469B X X X X J

RFD314IL TR435470 X X X X X E

RFD314IL TR435470A X X X X X E

RFD314IL TR435470B X X X X E

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Identifying the SAE Housing Size

A

B

D

C

Table 1. SAE Housing Identification

0 647.70 25.500 711.2 28.00 679.45 26.750 16 14.30 0.563

1 511.18 20.125 552.4 21.75 530.22 20.875 12 12.29 0.484

2 447.68 17.625 489.0 19.25 466.72 18.375 12 10.99 0.433

SAE

HousingSize

A

Housing

Pilot Diameter

B

Housing

Flange O.D.

C

Bolt Circle

Diameter

D

Bolt Holes

Qty.Dia.

mm. inches mm. inches mm. inches mm. inches

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Specifications

Maximum Safe Operating Speeds for Twin Disc Power Take-offs

(Refer to BOM and Twin Disc Power Take-Off Reference Listing on previous pages.)

Table 2. Maximum Safe Operating Speeds

PTO Model SolidDrive Plate(s)

SplitDrive Plate

SolidDrive Plate(s)

SplitDrive Plate

SP114 Series Grease 2400 1950 3000 2750

SPE114 Series Grease 2400 1950 3000 2750

SP214 Series Grease 2500 1950 3000 2750


SP214 Series Oil 2400 ----- 2400 2400

SP314 Series Grease 2500 1920 3000 2700

SP314 Series Oil 2500 1920 3000 2700


SP314SB Series Grease ----- ----- 3000 -----

RFD214 Series Grease 2200 2200 2200 2200

RFD314 Series Grease 2200 2200 2200 2200

Grease- or Oil-lubricated Main

Bearing(s)

Cast Iron Drive Ring Steel or Nodular Drive Ring

Pilot bearing position (If used)

(Refer to BOM and Twin Disc Power Take-Off Reference Listing on p revious pages.)

Ball-TypeThe owner/operator is responsible for checking the flywheel to ensure that thepilot bearing is installed on the shaft with sufficient clearance without bottomingin the flywheel bore. The depth of the pilot bore from the flywheel housing faceto shoulder on the flywheel pilot flange is 100.07 mm. (3.94 in.).

Roller-Type

Table 3. Roller-Type Pilot Bearing Dimensions

M2467 72 mm. (2.835 in.) 30.1 mm. (1.185 in.) 0.5 mm. (0.020 in.)

M2529 80 mm. (3.15 in.) 34.86 mm. (1.3725 in.) 0.5 mm. (0.020 in.)

M2713 100 mm. (3.94 in.) 39.62 mm. (1.5600 in.) 0.5 mm. (0.020 in.)

Roller

Bearing

Bearing O.D.Bearing Nominal

Width (C)

Bearing Nominal

Width +/- tolerance

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Tapered Roller Bearing End Play

Table 4. Recommended Bearing End Playfor Tapered Roller Bearings Used in Side-Loaded applications

SP114P Series 0.15 - 0.25 0.006 - 0.010

SP214P Series 0.15 - 0.25 0.006 - 0.010

SPE214P Series 0.15 - 0.25 0.006 - 0.010

SP214OP Series 0.15 - 0.25 0.006 - 0.010SP314P Series 0.15 - 0.25 0.006 - 0.010

SPE314P Series 0.15 - 0.25 0.006 - 0.010

SP314OP Series 0.15 - 0.25 0.006 - 0.010

SP314IL Series n/a (Ball Bearing) n/a (Ball Bearing)

RFD214IL Series n/a (Ball Bearing) n/a (Ball Bearing)


Model Number mm.

Recommended End Play

inches

Table 5. Recommended Bearing End Playfor Tapered Roller Bearings Used in In-Line applications

SP114P Series 0.23 - 0.30 0.009 - 0.012

SP214P Series 0.23 - 0.30 0.009 - 0.012

SPE214P Series 0.23 - 0.30 0.009 - 0.012

SP214OP Series 0.23 - 0.30 0.009 - 0.012SP314P Series 0.23 - 0.30 0.009 - 0.012

SPE314P Series 0.23 - 0.30 0.009 - 0.012

SP314OP Series 0.23 - 0.30 0.009 - 0.012

SP314IL Series n/a (Ball Bearing) n/a (Ball Bearing)



Model Number mm.

Recommended End Play

inches

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Filling the Main Bearing Cavity during initial assembly.

(Refer to BOM and Twin Disc Power Take-Off Reference Listing on p revious pages.)

Grease Lubrication:Hand-pack the bearings before assembly. Hand-packing requires that the rollerelements and bearing races be coated with grease. After assembly, add greasethrough the grease fitting until grease escapes from the outboard labyrinth sealall around the shaft. Do Not Overfill. Always rotate the shaft while adding greaseto the bearing cavity.

Oil Lubrication SP214OP Series (such as SP214P125):Fill with oil through the breather hole at the top of the bearing carrier until the oillevel reaches the bottom of the oil level plug hole in the side of the bearingcarrier.

Oil Lubrication SP314OP Series (such as SP314P123 & SP214P127):Oil is supplied through a hose connected to the (orifice) fitting at the top of thebearing carrier. Oil is supplied whenever the engine is running. Oil drains fromthe bearing carrier through a hose connected at the bottom of the bearing carrier.

Filling the Main Bearing Cavity during periodic maintenance.

Refer to the information contained in the Maintenance section of this manual.

Engagement force on the operating shaft

Table 6. Torque at operating shaft to engage clutch

SP114 Series 295 - 391 218 - 289

SPE114 Series 295 - 391 218 - 289

SP214 Series 295 - 391 218 - 289

SPE214 Series 295 - 391 218 - 289

SP314 Series 295 - 391 218 - 289

SPE314 Series 295 - 391 218 - 289

RFD214 Series 332 - 440 245 - 325

RFD314 Series 295 - 391 218 - 289

Model Peak Torque on Operating Shaft

Nm Lb.-Ft.

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PTO Deflection

PTO deflection due to loads imposed by the application should not exceed0.254 mm (0.010 in.). Deflection should be measured at the support plate pilot

with the dial indicator base mounted on a rigid part of the engine. See theillustration in Installation Tips in the Installation section of this manual.

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Twin Disc PTO Support Plate Specifications

Twin Disc, Inc. requires that a support plate be used with SP214 and SP314Series models used in side-load applications and recommends that a support

plate be used for certain in-line applications.

G

B(diameter)

(angle to

first hole)

D

(Holes)

E (Qty.)F (dia.)

43.18 cm. (17.0 in.)

Shim towithin0.12 cm.(0.005 in.)

A(diameter)

C(radius)

Figure 2. Typical Support Plate Illustration

Table 7. Support Plate Dimensions

PTO

Model

A

Bore Dia.+.127/.025mm(+.005/+.001”)

B

Bolt

Circle (Dia.)

C

Radius

D

Degree

E

Hole

Quantity

F

Hole

Diameter

GRecommended

Thickness

SP214P, SPE214P,SP214IL, SP314P

SPE314P, SP314OPSP314IL (SP314P108 &

SP314P111)

45° 6

12.70 mm.

(0.500 in.)

SP214OP

30° 6

12.70 mm.

(0.500 in.)

225.43 mm.

(8.875 in.)

190.50 mm.

(7.50 in.)

SP314IL(SP314P121 &

SP314P125)

30° 6

17/32 in.

12.70 mm.

(0.500 in.)

190.50 mm.

(7.50 in.)17/32 in.

0.679 in.136.65 mm.

(5.38 in.)

234.95 mm.

(9.25 in.)

200.01 mm.

(7.875 in.)

SP314SB ** 819.05 mm.

(0.750 in.)17/32 in.

162.05 mm.

(6.38 in.)

285.75 mm.

(11.25 in.)

238.15 mm.

(9.376 in.)

127.0 mm.

(5.0 in.)

225.43 mm.

(8.875 in.)

139.70 mm.

(5.50 in.)

** Refer to assembly drawing. Angular offset of the through holes must be calculated with respectto orientation of sheave housing. Holes are equally spaced.

SP314SB (SP314S117) ** 819.05 mm.

(0.750 in.)0.679 in.

167.64 mm.

(6.60 in.)

304.80 mm.

(12.00 in.)

266.73 mm.

(10.501 in.)

Note: One possible mounting method provides installation ease.Use angle iron to couple the support plate to the engineframe.

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Wear Limits

Table 8. Wear Limits - Bearing Carrier Bore Dimensions(Refer to BOM for the Bearing Carrier/Housing Part Number used in your PTO)

A7502 160.020 6.300 152.451 6.002 5

8424 127.025 5.001 n/a n/a 3

8424F 127.025 5.001 n/a n/a 3

8431 127.025 5.001 n/a n/a 3

1015764 190.030 7.4815 n/a n/a 6

02018611 140.040 5.5134 n/a n/a 3

02036012 160.025 6.3002 n/a n/a 6

A5194 152.425 6.001 n/a n/a 1

A5194E 152.425 6.001 n/a n/a 1

A5195 152.425 6.001 n/a n/a 1

9827 152.425 6.001 n/a n/a 8

1015768 160.023 6.3000 n/a n/a 71016518 160.065 6.302 160.065 6.302 4

1016518A 160.065 6.302 160.065 6.302 4

1019124 160.025 6.3002 n/a n/a 7

02036020 150.025 5.9065 n/a n/a 7

02018597 180.040 7.0882 n/a n/a 2

Housing

Part Number

Sheave Housing

or

Bearing Carrier

Part Number

Bore Dim. A

(Maximum)

mm. inches

Illustration

Number

Bore Dim. B

(Maximum)

mm. inches

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Table 9. Wear Limits - Shaft Dimensions(Refer to BOM for the Clutch Shaft Part Number used in your PTO)

ShaftPart

Number

Pilot Bearing

Journal (Min.)

mm. inches

Illus.Number

Front & Rear

Seal Journals(Min.)

mm. inches mm. inches mm. inches

Main Bearing

Journal Dim. A(Min.)

Main Bearing

Journal Dim. B(Min.)

* Front Bearing Journal ** Output Bearing Journal

A5166 34.9987 1.3779 95.3008 3.752 95.3008 3.752 92.075 3.625 9

A5190 34.9987 1.3779 73.8556 2.9077 n/a n/a n/a n/a 2

A5190AO 34.9987 1.3779 73.8556 2.9077 n/a n/a n/a n/a 2

A5190B 34.9987 1.3779 73.8556 2.9077 n/a n/a n/a n/a 2

A5190BZ 34.9987 1.3779 73.8556 2.9077 n/a n/a n/a n/a 2

A5190CQ 34.9987 1.3779 73.8556 2.9077 n/a n/a n/a n/a 2

A6515B 34.9987 1.3779 95.3008 3.752 n/a n/a n/a n/a 2

A6515N 34.9987 1.3779 95.3008 3.752 n/a n/a n/a n/a 2

A6515R 34.9987 1.3779 95.3008 3.752 n/a n/a n/a n/a 2

A6515T 34.9987 1.3779 95.3008 3.752 n/a n/a n/a n/a 2

A6515U 40.0000 1.5749 95.3008 3.752 n/a n/a n/a n/a 2

A6619B 44.9987 1.7716 95.3008 3.752 n/a n/a n/a n/a 2

A6619K 44.9987 1.7716 95.3008 3.752 n/a n/a n/a n/a 2

A6619Q 44.9987 1.7716 95.3008 3.752 n/a n/a n/a n/a 2

B5027A 34.9987 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AQ 29.9593 1.1795 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AR 34.9986 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AS 34.9986 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AV 34.999 1.3779 95.301 3.752 95.301 3.752 n/a n/a 1

B5027AW 34.9987 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AX 34.9987 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027AZ 44.9987 1.7716 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027B 34.9987 1.3779 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5027BA 34.9987 1.3778 95.3008 3.752 95.3008 3.752 n/a n/a 1

B5225 45.0037 1.7718 95.3008 3.752 n/a n/a n/a n/a 2

B5225B 45.0037 1.7718 95.3008 3.752 n/a n/a n/a n/a 2

B5225D 45.0037 1.7718 95.3008 3.752 n/a n/a n/a n/a 2

B6247 not used 95.2779 3.7511 95.2881 3.7515 90.018* 3.544* 8

1015786 not used 90.013 3.5438 n/a n/a 71.37** 2.810** 3

1016185 not used 90.013 3.5438 n/a n/a n/a n/a 4

1016521 not used 90.030 3.5445 90.030 3.5445 n/a n/a 5

1016522 not used 90.030 3.5445 90.030 3.5445 n/a n/a 5

1021911 44.9987 1.7716 99.9973 3.9369 n/a n/a n/a n/a 2

1021912 44.9987 1.7716 99.9973 3.9369 n/a n/a n/a n/a 2

1021913 34.9910 1.3776 79.9973 3.1495 n/a n/a n/a n/a 10

1022209 not used 90.021 3.5441 90.021 3.5441 88.88 3.499 6

02035496 34.9910 1.3776 79.9973 3.1495 n/a n/a n/a n/a 10

02035709 34.9910 1.3776 99.9973 3.9369 n/a n/a n/a n/a 7

02036022 not used 120.0125 4.7249 80.0125 3.1501 n/a n/a 5

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1

2

3

5

4

Large Shoulder

Small Shoulder

Figure 4. Clutch Shaft Illustrations

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6

7

8

9

10

Figure 4. Clutch Shaft Illustrations (continued)

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Torque Values for Fasteners

Note: The tables below provide information for several differenttypes of fasteners: U.S. Standard Fine and Coarse Thread

Capscrews, Bolts, and Nuts; Metric Coarse ThreadCapscrews, Bolts, and Nuts; Tapered Pipe Plugs (withthread lubricant); Straight Threaded Tube Fittings, HoseFittings, and O-ring Plugs. Be sure to use the appropriatetable to obtain the correct torque value.

Note: All threads and bearing face to be lubricated with light oilfilm prior to assembly.

Table 10. U.S. Standard Fine and Coarse Thread Capscrews, Bolts, and Nuts

1/4 8 - 11 6 - 8 14 - 16 10 - 12

5/16 18 - 23 13 - 17 27 - 33 20 - 24

3/8 34 - 39 25 - 29 47 - 56 35 - 41

7/16 50 - 58 37 - 43 75 - 88 55 - 65

1/2 81 - 95 60 - 70 113 - 132 83 - 979/16 111 - 133 82 - 98 163 - 190 120 - 140

5/8 163 - 190 120 - 140 224 - 264 165 - 195

3/4 278 - 332 205 - 245 400 - 468 295 - 345

7/8 447 - 529 330 - 390 637 - 746 470 - 550

1 671 - 793 495 - 585 969 - 1132 715 - 835

1 1/8 834 - 997 615 - 735 1376 - 1607 1015 - 1185

1 1/4 1152 - 1356 850 - 1000 1864 - 2203 1375 - 1625

Thread

Diameter

SAE Grade 5 SAE Grade 8

lb.-ft.N-m lb.-ft.N-m

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Table 11. Metric Coarse Thread Capscrews, Bolts, and Nuts

ThreadSize

Property Class 8.8 Property Class 12.9

lb.-ft.N-m lb.-ft.N-m lb.-ft.N-m

Property Class 10.9

M6 9 -10 6.5 - 7.5 12 - 14 9 - 10 14 - 16 10 - 12

M8 21 -25 16 - 18 31 - 35 23 - 26 34 - 40 25 - 29

M10 43 - 49 32 - 36 60 - 68 44 - 51 70 - 80 51 - 59

M12 74 - 86 55 - 63 104 - 120 77 - 88 121 - 139 89 - 103

M16 179 - 205 132 - 151 256 - 294 189 - 217 298 - 342 219 - 253

M18 247 - 281 182 - 208 350 - 398 258 - 294 412 - 469 304 - 346

M20 348 - 400 257 - 295 493 - 567 364 - 418 581 - 669 429 - 493M22 475 - 541 351 - 399 669 - 762 494 - 562 792 - 902 584 - 666

M24 603 - 693 445 - 511 848 - 976 626 - 720 1000 - 1150 737 - 848

M30 967 - 1113 714 - 820 1674 - 1926 1235 - 1421 2000 - 2301 1475 - 1697

Table 12. Tapered Pipe Plugs (with thread lubricant)

1/6-27 11.5 8.5 7.5 5.5

1/8-27 14 10.5 9 6.5

1/4-18 34 25 21.5 16

3/8-18 36.5 27 23 17

1/2-14 68 50 40.5 30

3/4-14 73 54 46 34

1-11 1/2 108 80 68 50

1 1/4-11 1/2 115 85 75 55

1 1/2-11 1/2 115 85 75 55

NPTF

Size (in.)

In Cast Iron or Steel In Aluminum

N-m (+ or - 5%) lb.-ft. (+ or - 5%)N-m (+ or - 5%)lb.-ft. (+ or - 5%)

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Table 13. Straight Threaded Tube Fittings, Hose Fittings, and O-ring Plugs

Nominal

ThreadDiameter

lb.-ft. (+ or - 5%)

5/16 5 3.5

3/8 11.5 8.5

7/16 16 12

1/2 20 15

9/16 24.5 18

5/8 24.5 18

11/16 34 25

3/4 40.5 30

7/8 54 40

1 1/16 75 55

1 3/16 88 65

1 1/4 88 65

1 5/16 108 80

1 3/8 108 80

1 5/8 108 80

1 7/8 108 802 1/2 108 80

N-m (+ or - 5%)

Nominal

ThreadDiameter

lb.-ft. (+ or - 5%)N-m (+ or - 5%)

M10X1.0 12 9

M12X1.5 16 12

M14X1.5 20 15

M16X1.5 24 18

M18X1.5 34 25

M22X1.5 54 40

M27X2.0 75 55

(in iron)

M27X2.0 75 55

(in aluminum)

M33X2.0 88 65

M42X2.0 108 80

M48X2.0 108 80

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NOTES

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Twin Disc, Incorporated Installation


Installation

Installation Tips

Tapered Roller Bearing Adjustment

1. Tapered roller bearing end play adjustment is different in SP114,SPE114, SP214, SPE214, SP314 and SPE314 Series Power Take-Offs for side load applications than it is for in-line applications . Insurethat the adjustment is correct for the application.

2. All SP114, SPE114, SP214, SPE214, SP314 and SPE314 SeriesPower Take-Offs are manufactured at Twin Disc’s factory with thetapered roller bearing end play adjusted for side-load application .

3. RFD214IL and RFD314IL Series Power Take-Offs have ball-type mainbearings. No adjustment is required.

4. SP314SB Series Power Take-Offs have roller-type main bearings. Noadjustment is required.

5. Tapered roller bearing end play in SP114, SPE114, SP214, SPE214,SP314 and SPE314 Series Power Take-Offs used for in-line applicationsmust be adjusted to specifications shown in Tapered Roller BearingEnd Play in the Description and Specifications section of this manual.

a. For rebuilt or remanufactured PTOs: Adjust the end play toproper specifications for in-line applications at the time of assembly. Follow instructions contained in the Assembly sectionof this manual.

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Twin Disc, IncorporatedInstallation


b. For SP114, SPE114, SP214, SPE214, SP314 and SPE314Series PTOs manufactured in Twin Disc’s factory: Readjustthe factory end play setting prior to installation on the engine forin-line applications. Most SP114, SPE114, SP214, SPE214,

SP314 and SPE314 Series Power Take-Offs have a tag attachedto the housing which contains instructions that must be followed.Readjust the end play setting as instructed.

Figure 5. Factory Instruction Tag for End Play Adjustment

Alignment

6. The flywheel and flywheel housing alignment must be within specifications.Perform the measurements shown in Prior To Installation in thisInstallation section.

7. Avoid excessive misalignment between the engine and PTO. Check

the following if abnormal wear of parts exists:

a. Excessive loads tend to deflect parts to which PTOs are mounted. A dial indicator can be mounted on a rigid part of the engine orindependently on the foundation to determine deflection underactual operating conditions. See Support Plate, Belt or chaintension/Allowable Side Load Pulls and Deflection Causedby Side Load Pulls in this Installation section and informationcontained in the Description and Specifications sectionregarding these issues

b. Readings taken before the drive is installed with the enginestanding still and when under operating conditions (with the engineoff and all belts, chains, driveshafts and/or support plates attachedand secured with bolts torqued to specifications) will indicatethe extent of deflection. In no case should the deflection exceed0.254 mm. (0.010 in.) (T.I.R.) at the bearing carrier.

Note: The dial indicator should never be applied with the enginerunning. This is unsafe and could result in damage to thedial indicator.

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8. In a u-joint-type installation, to realize the longest possible life of thepower take-off bearings, the best possible alignment must be maintainedbetween the center line of the power take-off shaft and the center line of the driven unit shaft. See information contained in Alignment-U-Joint-

Type Installation in this Installation section.

9. In side-load installations, alignment between the driveR and driveNpulleys must be carefully established and maintained. See Positionand Measure Alignment of the Sheave in this Installation section.

Drive Ring

10. The drive ring must be properly installed. See information in Drive RingInstallation in this Installation section.

Pilot Bearings

11. Ball-type pilot bearings and Roller-type pilot bearings must be installedproperly. See Ball-Type Pilot Bearing Installation orRoller-Type PilotBearing Installation in this Installation section.

Support Plate

12. When mounting the engine and Power Take Off in the machine, acustomer-supplied support plate may be required to support the output

end of the pto housing. See the information about customer-suppliedsupport plates, the Twin Disc Power Take-Off Reference Listingand Twin Disc Support Plate Specifications contained in theDescription and Specifications section of this manual.

Failure to follow this requirement may result in damage to the powertake off or the engine flywheel housing.

Belt or chain tension/Allowable Side Load Pulls

13. Avoid excessive tightening of belts or chains. See the Allowable SideLoad tables in this Installation section.

14. Avoid excessively loose belts or chains. Belt tension or chain adjustmentthat is below specifications can cause belt/chain “whip” during operation,resulting in bearing failure and shortened power take-off service life.

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Deflection Caused by Side Load Pulls

15. Power Take-Off deflection due to loads imposed by the applicationshould not exceed specified limits shown in PTO Deflection in the

Description and Specifications section. Deflection should be measuredat the support plate location on the power take-off (or main bearing areaof the housing if no support plate is used).

Figure 6. Determining Deflection While Applying Side Loads

The dial indicator should not be applied while the unit is operating. Thiscould result in damage to the dial indicator.

Lubrication

16. Verify that the PTO is properly lubricated prior to starting the engine.

a. The throwout collar is lubricated by grease through a grease fittingon the outside of the main housing.

b. SP214OP and SP314OP Series main bearings are lubricatedby oil contained in the main bearing cavity.

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c. All other SP114, SPE114, SP214, SPE214, SP314, SPE314,SP314SB, RFD214 and RFD314 Series main bearings arelubricated by grease through a grease fitting in the housing orbearing carrier.

d. The sealed-for-life pilot bearing should not be lubricated duringservice.

e. Pilot bearings designed for periodic lubrication must be greased.See Lubrication in the Maintenance section for moreinformation. Improper lubrication will result in premature failureof components. DO NOT OVERGREASE!

Refer to the Twin Disc Power Take-Off Reference Listing and Filling theMain Bearing Cavity in the Description and Specifications section,Lubrication in the Maintenance section and Engineering Drawings nearthe back of this manual.

Clutch Adjustment

17. Verify that the clutch is adjusted according to the procedure outlined inClutch Adjustment in the Maintenance section. Failure to do so willresult in premature clutch wear and failure.

Note: Twin Disc will not be responsible for any damage or injury

resulting from improper adjustment and/or lubrication. Thisincludes any accessory drives and loads.

Hand Lever Position

18. Proper hand lever position is required to obtain long service life of thethrowout bearing. See Hand Lever Position for Twin Disc PowerTake-Offs and Model SPE114, SPE214 and SPE314 ArmAdjustment Procedure in this Installation section.

Air Engagement Mechanisms

19. Air engagement mechanisms must be installed and adjusted properlyfor proper clutch actuation and long service life of the PTO. No preloadon the throwout bearing can exist either in the fully-engaged or fully-released positions, and the air mechanism must be engineered andinstalled to provide proper engagement force and stroke to properlyengage and disengage the clutch. See Setting Up Air Engagementon Twin Disc Power Take-Offs in this Installation section.

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Prior to Installation (Ref: SAE J1033 and J617)

Refer to Identifying the SAE Housing Size in the Descriptionand Specifications section of this manual.

Most Twin Disc products mount directly onto the flywheel of the engine.Flywheel-to-driven component interference is possible due to mismatchof components or other reasons. Therefore, engine crankshaft endplayas well as flywheel alignment check must be made before the drivencomponent, the Power Take-Off, is installed.

After installation of the Power Take-Off, crankshaft end play should be

measured again. End play at the second measurement should be thesame as the first. A difference in these two end play measurements couldbe an indication of interference. Consequently, the Power Take-Offshould be removed and the source of interference found and corrected.

Twin Disc will not be responsible for system damage caused by engineto Twin Disc match-up regardless of the cause of interference. Thisengine crankshaft end play check is considered mandatory.

Note: All measurements must be taken with the engine or motor

mounted on its supports after the flywheel and housinghave been thoroughly cleaned.

1. Measure and record the engine crankshaft or motor shaft endplay usinga dial indicator. Record this value, as it will be used later._______

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2. Bolt the indicator to the flywheel so the indicator is perpendicular to theflywheel housing face and the indicator stem rides on the flywheel housingface.

Figure 7. Checking Flywheel Housing Face

3. Rotate the shaft through on entire revolution and note the runout. Thetotal indicator reading (T.I.R.) must not exceed:

SAE #0 Housing 0.41 mm. (0.016 in.)SAE #1 Housing 0.30 mm. (0.012 in.)SAE #2 Housing 0.28 mm. (0.011 in.)

Note: The flywheel and crankshaft of the engine must be heldagainst either the front or rear of the crankshaft thrustbearing while the total indicator sweep (T.I.R.) is beingmade.

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4. Readjust the indicator so the stem rides on the pilot bore of the flywheelhousing face.

Figure 8. Checking Flywheel Housing Bore

5. Rotate the shaft through one entire revolution and note the runout. Thetotal indicator reading (T.I.R.) should not exceed:

SAE #0 Housing 0.41 mm. (0.016 in.)SAE #1 Housing 0.30 mm. (0.012 in.)SAE #2 Housing 0.28 mm. (0.011 in.)

6. Remove the indicator base from the flywheel and bolt it to the flywheelhousing face. Position the indicator stem so that it rides where the drivering will set on the flywheel face.

Figure 9. Checking Driving Ring Surface of Flywheel

7. Rotate the shaft through one entire revolution and note the face runout of the flywheel. The total indicator reading (T.I.R.) must not exceed 0.01mm.(0.0005 in.) per 25.4 mm. (per inch) of flywheel diameter.

Note: The flywheel and crankshaft of the engine must be heldagainst either the front or rear of the crankshaft thrustbearing while the total indicator sweep (T.I.R.) is beingmade.

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8. Readjust the indicator stem so it rides on the driving ring pilot bore of the flywheel.

Figure 10 . Checking Driving Ring Pilot Bore of Flywheel

9. Rotate the shaft through one entire revolution and note the driving ringbore eccentricity. The total indicator reading (T.I.R.) must not exceed0.13 mm. (0.005 in.).

10. Adjust the indicator stem so that it rides on the pilot bearing bore cavity.

Figure 11. Checking Pilot Bearing Bore of Flywheel

11. Rotate the shaft through one entire revolution and note the pilot bearingbore eccentricity. The total indicator reading (T.I.R.) must not exceed0.13 mm. (0.005 in.).

Note: Eccentricity between the driving ring pilot bore and thepilot bearing bore must not exceed 0.20 mm. (0.008 in.).

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Drive Ring Installation

Refer to information regarding cleaning and inspection of the drive ring in theCleaning and Inspection section of this manual before proceeding.

1. Clean the drive ring and flywheel of any dirt or debris as necessary.

2. Use crocus cloth or emery cloth to remove any surface imperfectionssuch as nicks, burrs, and sharp edges on the O.D. or the surface thatwill be mounted against the flywheel face.

3. Use crocus cloth or emery cloth to remove any surface imperfectionssuch as nicks, burrs, and sharp edges in the I.D. of the flywheel pilotbore or on the face that will be in contact with the drive ring.

4. Position the drive ring against the flywheel, piloted in the mounting bore,and secure with eight hex-head capscrews. Torque the capscrew to theproper specifications given in Torque Values for Fasteners in theDescription and Specifications section of this manual.

Drive ring attachment screws must be grade 8 per SAE J429. Do notuse substitutes.

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Ball-Type Pilot Bearing Installation

Refer to the Twin Disc Power Take-Off Reference Listing in the Description

and Specifications section, the exploded views in the Illustration section andEngineering Drawings near the back of this manual.

Refer to information regarding cleaning and inspection in the Cleaning andInspection section of this manual before proceeding.

1. Support the output end of the clutch shaft.

2. Make sure the clutch shaft end stub is free of surface imperfectionssuch as nicks, burrs, and sharp edges. Remove them using fine emery

cloth or crocus cloth.

3. Tap the pilot bearing onto the clutch shaft. The front face of the pilotbearing should be positioned flush with the input end of the clutch shaft.Tap or apply force to only the inner race of the bearing.

Note: Tap or press only on the inner race of the bearing. Anyimpact on the outer race or balls will damage the bearing,resulting in shortened service life or premature failure.

Do not damage the seal of the pilot bearing. A damaged seal rendersthe pilot bearing destroyed and it must be replace with a new bearing.

Front of PilotBearing Flush with

End of ClutchShaft

Clutch Shaft

Pilot Bearing(Ball-type shown)

Figure 12. Position of the Ball-Type Pilot Bearing on the Shaft

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Roller-Type Pilot Bearing Installation

Some Twin Disc Power Take-offs are designed with roller-type pilot bearings. All of the roller-type bearings available from Twin Disc are the separate race

type, i.e. the inner race is removable from the outer race and seal assembly.Due to its design configuration, axial alignment of the inner and outer races is extremely important. The information and instructions below will assure properbearing mounting.

Instructions for assembly.

Refer to the Twin Disc Power Take-Off Reference Listing in the Descriptionand Specifications section, the exploded views in the Illustration section andEngineering Drawings near the back of this manual.


1. Position the pto on the bed of a press with the pilot bearing end up andthe output end of the clutch shaft resting firmly on a solid support.

Note: The PTO must be standing on the output end of the shaft.

The power take-off must be securely supported as it stands on the endof the shaft so it does not tip or fall over.

Output end of theshaft MUST rest andbe in contact with asolid support (Pressbed).

Use several 4” x 4”blocks or other means of insuring

the PTO does not tipor fall over.

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

1 2 3

Figure 13. Support the pto standing on the end of the shaft

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2. Press the pilot bearing inner race on the clutch shaft so it is flush with theinput end of the shaft.

3. Carefully measure dimension (a). Record the measurement.

4. Refer to the Roller-Type Bearing Dimensions table in the Descriptionand Specifications section of this manual. Subtract the appropriate rollerbearing nominal width (c) from measurement (a). This will determinethe position of the pilot bearing outer race in the flywheel bore (dimensionb).

a - c = b (pilot bearing outer race position)

5. Install the pilot bearing outer race in the flywheel and position it at

dimension (b) as shown.

Pilot Bearing

Inner Race

Inner race

flush with

end of shaft

a

b

Flywheel

Housing

Face

Flywheel

Pilot Bearingouter race

Figure 14. Install Pilot Bearing-Roller Type

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PTO Installation to Engine or Driving Member

Refer to the Twin Disc Power Take-Off Reference Listing in the Descriptionand Specifications section, the exploded views in the Illustration section and

Engineering Drawings near the back of this manual.


1. Clean the PTO housing flange, flywheel housing flange, and pilot bearingbore of any debris.

2. Make sure the housing flange and flywheel housing flange are free of surface imperfections such as nicks, burrs, and sharp edges. Remove

them using fine emery cloth or crocus cloth.

3. Install a minimum of three guide studs in the flywheel housing, locatedapproximately 120o apart. Using a suitable hoist, position the PTO onthe guide studs and slide it against the flywheel housing, carefully aligningthe pilot bearing with the pilot bearing bore in the flywheel and the teethof the friction plates (6) with the drive ring (5).

Do not force the PTO unit onto the engine. If any resistance is noted,

repeat the clutch plate centering procedure either in the clutch assemblyor final assembly information of the Assembly section to align and centerthe friction plates so they mesh properly with the teeth of the drive ring.

4. Secure the PTO housing to the flywheel housing with (12 or 16) hex-head capscrews. Torque the capscrew to the proper specifications givenin Torque Values for Fasteners in the Description and Specificationssection of this manual.

Note: PTO housing to flywheel housing attachment screws mustbe grade 5 or better.

5. Rap the output end of the main shaft with a soft hammer to remove anypreload on the main bearings and/or pilot bearing.

This step must not be omitted. Bearing failure may result.

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6. Measure the crankshaft endplay again. The measurement must be thesame value as recorded from step 1 under Prior To Installaton. Locateand correct the source of preload if the endplay is not the same value.

Engine and/or PTO failure will result from any excessive preload oncomponents.

All except SP314SB models: (SP314SB skip to step 12)

7. Install the key (34) on the output end of the clutch shaft (33) and installthe drive sheave, chain sprocket, or u-joint flange as the applicationrequires.

8. Align the sheaves as described in Position and Measure Alignmentof the Sheave in this section.

Refer to the Twin Disc Power Take-Off Reference Listing in theDescription and Specifications section and Engineering Drawingstowards the back of this manual.

9. Install the support plate if it is to be used. Refer to support plateinformation in Twin Disc PTO Support Plate Specifications in theDescription and Specifications section. Install eight M12 x 1.75 pitch

8.8 Property Class quality capscrews per ISO 898-1. Torque to 80 Nm.(59 lb.-ft.).

Note: Verify proper shimming and alignment of the support plate.

10. Install and tighten the belts to the manufacturer’s specifications, beingsure that belt tension does not cause excessive deflection. (Refer toinformation in the Description and Specifications section andAllowable Side Load Pulls in this section to measure and assure thatexcessive deflection does not occur when the belts are tightened.)

11. Install the hand lever assembly (53) as shown in the Hand LeverPosition for Twin Disc Power Take-Offs and, if appropriate, theModel SPE114, SPE214 and SPE314 Arm Adjustment Procedurein this Installation section, and torque the hex head capscrew to 81 - 95Nm (60 - 70 lb. ft.)

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SP314SB models:

12. Remove three (only) of the capscrews (48) that attach the sheave housing(60) to the clutch housing (44). Remove three that are about 120 degrees

apart. Install three threaded guide pins in the holes to support the sheavehousing as it is being removed.

13. Remove the remaining capscrews (48) and remove the sheave housing.

14. Install the sheave. Use a hydraulic power unit to properly position thesheave.

Be sure to install the power unit so the force is directed through the

shaft and not across any of the bearings. The bearings may be damaged,resulting in premature failure.

15. Align the sheaves as described in Position and Measure Alignmentof the Sheave in this section.

The driveR sheave must be aligned with the driveN pulley. Align to within1/2 of one degree using a straight edge or “tight-cord” method.

The sheave housing must seat properly on the two dowel pins in theclutch housing.

16. Remove the three guide dowels and replace with the remaining threehex head capscrews. Torque the capscrews to the proper specificationsgiven in Torque Values for Fasteners in the Description andSpecifications section of this manual.

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17. Mount the dial indicator base on a secure location on the PTO housing.Position the tip of the dial indicator on the sheave as shown. Set the dialindicator to zero.

Mount Dial Indicator Base Securely

Measure atThree Locations

Figure 15. Measure Sheave Alignment

18. Rotate the sheave through one complete revolution and recheck accuracywith at least one other revolution. Read the total amount of dial indicationsweep. Total runout must not exceed 0.254 mm. (0.010 in.) T.I.R. Markthe “high” spot as indicated when the dial indicator reaches its maximumprogression point in the clockwise direction.

19. Repeat at the other two locations as shown, marking the “high” spot of each. Total runout must not exceed 0.254 mm. (0.010 in.) T.I.R.

Note: All three readings will normally be the same. If one issignificantly different from the other two, first recheck toassure an accurate reading was obtained. If the readingsexceed the allowable limit, alignment of the sheave mustbe corrected to prevent failure.

Install the belts.

20. Remove the sheave housing as described above.

21. Install the belts loosely in position in the grooves.

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22. Reinstall the sheave housing as described above.

23. Tighten the belts to the manufacturer’s specifications, being sure thatbelt tension does not cause excessive deflection. (Refer to information

in the Description and Specifications section and Allowable SideLoad Pulls in this section to measure and assure that excessivedeflection does not occur when the belts are tightened.)

24. Install the hand lever assembly (53) as shown in the Hand LeverPosition for Twin Disc Power Take-Offs and, if appropriate, theModel SPE114, SPE214 and SPE314 Arm Adjustment Procedurein this Installation section, and torque the hex head capscrew to 81 - 95Nm (60 - 70 lb. ft.)

25. Install the support plate. Refer to support plate information in theDescription and Specifications section. Install eight M12 x 1.75 pitch8.8 Property Class quality capscrews per ISO 898-1. Torque to 80 Nm.(59 lb.-ft.).

Note: Verify proper shimming and alignment of the support plate.

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Hand Lever Position for Twin Disc Power Take-Offs

Normal Position: Operating Shaft Horizontal

To insure there is no preload on the shifting mechanism, the hand lever positionwith the clutch engaged should be slightly past vertical position, slightly towardsengine.

The handle should NEVER be installed in a horizontal position whenthe operating shaft is positioned horizontally. Improper handle positioncan cause throwout collar failure resulting in catastrophic failure of theclutch.

Vertical

DisengagedEngaged

Figure 16. Hand Lever Position

Special Position: Operating Shaft Vertical

If the installation requires that the operating shaft be in a vertical position, astop collar must be installed to prevent the weight of the hand lever, operatingshaft and throwout yoke from creating a preload on the throwout collar. Positionthe hand lever as described above and also position and lock a stop collar onthe operating shaft so that the throwout yoke is centered on the throwout collar.Contact Twin Disc’s Service Department for information on use of a stop collar.

Stop Collar Operating Shaft

Figure 17. Use of a stop collar with a vertical operating

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Model SPE114, SPE214 and SPE314 Series Arm AdjustmentProcedure

Clearance “X”

SPE114 - 2.286 mm. (0.090 in.)SPE214 - 2.286 mm. (0.090 in.)

SPE314 - 2.286 mm. (0.090 in.)

ClearanceSPE114 - 3.048 mm. (0.120 in.)

SPE214 - 3.048 mm. (0.120 in.)SPE314 - 3.048 mm. (0.120 in.)

Figure 18. SPE114, SPE214 and SPE314 Series Adjust Camrols

Refer to the Engineering Drawings, and the illustrations above and in theIllustration section of this manual.

1. Loosen the neutral lock arm hex head capscrew that secures it to theoperating shaft.

2. Engage the clutch.

3. Position the camrols (92) at the clearance “X” of 2.286 mm. (0.090 in.)by using feeler stock or gauges.

4. Place the detent roller (84) in the forward groove of the detent locator(88).

5. Position the neutral lock arm (80) on the operating shaft to provide aclearance of 3.148 mm. (0.120 in.) between the snap ring (79) on theroller pin (82) and the neutral lock arm.

6. Tighten the neutral lock arm hex head capscrew and torque to 40.7 Nm(30 lb.-ft.).

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Position and Measure Alignment of the Sheave

1. Align the driveR and driveN shafts so that the faces of the sheaves arealigned and parallel to each other. Misalignment must be LESS THAN1/2 of 1 degree between the faces.

2. Position the sheave (driveR sheave on the PTO shaft) so it is alignedwith the driveN sheave (on equipment being driven by the PTO).

3. Calculate MAXIMUM allowable misalignment distance of the faces:Max. = 0.222 mm. (0.00875 in.) x distance between sheave centerlines.

4. Place a tight cord or straight edge against both edges of the flat face of one sheave. Measure the distance between the cord or straight edge

and the face of the other sheave. The gap is the misalignment distance. Align the sheaves to meet specifications.

Misalignment between the sheaves will result in shortened service lifeof the belts and may result in premature equipment failure.

MisalignmentDistanceMeasure

misalignment

distance

betweensheave face andcord or straight

edge here.

Straight edgeor tight cord tobe flat against

both edges of both sheaves

Use Alignment

straight edgeor tight cord

Use Alignment

straight edgeor tight cord

Aligned Not Aligned

Straight edgeor tight cordflat against

both edges of one sheave

DriveR Sheave

DriveN Sheave

DriveR Sheave

DriveN Sheave

DriveR andDriveN shafts

must be parallel.

Figure 19. Align Sheaves to Specifications

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Allowable Side Loads

x

CENTERLINEOF SIDE

LOAD

REAR OF BEARING

HOUSING

L=126,000 x H.P.

N x Dx F x LF

Figure 20. Allowable Side Pull and Formula to Determine Applied Load(See alternate illustrations for Spread Bearing Models)

Formula values:

L = actual applied load (Lbs.)

N = shaft speed (RPM)

D = pitch diameter (in.) at sheave, etc.

F = load factor

!1.0 for chain or gear drive

!2.5 for all V belts

! 1.5 for timing belts ! 3.5 for flat belts

LF = 2.1 for reciprocating compressors and other severe shock driversand 1.8 for large inertia type drive (crushers, chippers, planers)

A support plate must be attached at the rear of the PTO if it is subjectedto side load operation of the shaft. See the Twin Disc Power Take-OffReference Listing and Support Plate Specifications in the Description and

Specifications section of this manual.

Note: SP214IL and SP314IL Power Take-offs arerecommended for in-line, not side-loaded, applications.

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Table 14. Allowable Side Loads

(Table 14.1) SP114P (M1969A, M1985, M1985A): (SP114P001,

SP114P003, SP114P101, SP114P102, SP114P104, SP114P106,


SP114P114, SP114P115)

1 2 3 4 5 6 7 8

1000 3390 2600 2120 1780 1535 1350 1210 1090

1500 3390 2600 2120 1780 1535 1350 1210 1090

2000 3390 2600 2120 1780 1535 1350 1210 10902200 3390 2600 2120 1780 1535 1350 1210 1090

RPM‘X’ Distance

Table 14.1

0

500

1000

1500

2000

2500

3000

3500

4000

0 2 4 6 8 10

"X" Distance, inches (se e drawing)

M a x i m u m L o a

d , L b s .

1000 RPM

1500 RPM

2000 RPM

2200 RPM

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Table 14. Allowable Side Loads (continued)

1 2 3 4 5 6 7 8

1000 4030 3240 2710 2330 2050 1820 1640 1500

1500 4030 3240 2710 2330 2050 1820 1640 1500

2000 4030 3240 2710 2330 2050 1820 1640 1500

2200 4030 3240 2710 2330 2050 1820 1640 1500

RPM‘X’ Distance

(Table 14.2) SP214P (M1969A) (SP214P111)

Table 14.2

0

500

1000

1500

2000

2500

3000

3500

4000

4500

0 2 4 6 8 10

"X" Distance, Inches (See Sketch)

M a

x i m u m L o a d , L b s

1000 RPM

1500 RPM

2000 RPM

2200 RPM

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Table 14. Allowable Side Loads (continued)

1 2 3 4 5 6 7 8

1000 5360 4320 3610 3100 2720 2420 2180 1990

1500 5360 4320 3610 3100 2720 2420 2180 1990

2000 5360 4320 3610 3100 2720 2420 2180 1990

2200 5360 4320 3610 3100 2720 2420 2180 1990

RPM‘X’ Distance

(Table 14.3) SP214P (M1985, M1985A): (SP214P001, SP214P004,SP214P008, SP214P101, SP214P114, SP214P115, SP214P120,


SP214P138, SP214P139, SP214P142)

Table 14.3

0

1000

2000

3000

4000

5000

6000

0 2 4 6 8 10

"X" Distance, Inches (See Sketch)

M a x

i m u m

L o a d ,

L b s

1000 RPM

1500 RPM

2000 RPM

2200 RPM

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