John Deere

MODEL:

140 Hydrostatic Tractor SIn 0-30,000

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF JOHN DEERE OR IT'S SUCCESSORS. JOHN DEERE AND IT'S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

JD-S-SM2086

140 Hydrostatic Tractor (Serial No. - 30,000)

John Deere Lawn & Grounds Care Division

SM2086 (01 AUG70)

Service Manual

140 HYDROSTATIC TRACTOR (Serial No. -30,000)

CONTENTS

SECTION 10 - GENERAL Group 5 - Tractor Identification Group 10 - Specifications Group 15 - Tune-Up and Adjustment Group 20 - Fuel and Lubricants

SECTION 20 - ENGINE Group 5 - General Information Group 10 - Cylinder Head Valves and

Breather Group 15 - Piston, Crankshaft, Main Bear­

ings and Flywheel Group 20 - Camshaft, Tappets, and Governor Group 25 - Kohler K321AS Engine (Serial

No. 10,001-30,000) Group 30 - Short Blocks and Service Engines

SECTION 30 - FUEL SYSTEM Group 5 - General Information Group 10 - Carburetor Group 15 - Air Cleaner Group 20 - Sediment Bowl, Fuel Strainer and

Gas Tank

SECTION 40 - ELECTRICAL SYSTEM Group 5 - General Information Group 10 - Cranking System Group 15 - Magneto Ignition System (Serial

No. -10,000) Group 20 - Solid-State Ignition System

(Serial No. 10,001-22,400) Group 25 - Battery-Coil Ignition System

(Serial No. 22,401-30,000) Group 30 - Charging System Group 35 - PTO Clutch, Lights and Acces­

sories

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SECTION 50 - POWER TRAIN Group 5 - General Information Group 10 - Clutch, Drive Shaft, Couplings

and Brakes Group 15 - Hydrostatic Transmission Group 20 - Differential and Axle Group 25 - Control Cam and Linkage

SECTION 60 - HYDRAULIC LIFT SYSTEM Group 5 - General Information Group 10 - Hydraulic Circuits Group 15 - Hydraulic Control Valves Group 20 - Hydraulic Cylinders Group 25 - Equipment Compounding

SECTION 70 - MISCELLANEOUS Group 5 - General Information Group 10 - Steering Assembly Group 15 - Front Wheels and Axle Group 20 - Fender-Deck and Seat Assembly

Section 10

GENERAL Group 5

TRACTOR IDENTIFICATION

TABLE OF CONTENTS

Page

GROUP 5 - T~ACTOR IDENTIFICATION Serial NuIJIbers. . . . . • . . . . . . . . .. 5-2 Identification Codes. . . • . . . . . . . .. 5-2

Tra.¢fur Codes. . . • . . • . . . . . . .. 5-2 HVdraulic System Codes. . . . . . .. 5-2 'l"ire Codes ................ , 5-2

GllOUP 10 - SPECIFICATIONS . Engine Specifications. . . . . . . . . . .. 10-1 Capacities . . . . . . . . . . . . . . . . . .. 10-1 Tractor Specifications. . . . . . . . . .. 10-2 Bolt Torque Chart. . • . • • . . . . . . .. 10-3 Set Screw Seating Torque Chart. . . .. 10-3 Rear Wheel Weight Bolt Size Chart. .. 10-4

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Page

GROUP 15 - TUNE- UP- AND ADJUSTMENT Preliminary Engine Testing. . . . . .. 15-1 Minor Tune-Up Guide. . . . . . . . . . .. 15-1 Major Tune-Up Guide. • . . • . . . . . .. 15-2 Common Adjustments. . . . • . . . . . .. 15-2

GROUP 20 - FUEL AND LUBRICANTS Fuel. . . . . . . . . . . . . . . . . . . . . .. 20-1 Lubricants. . . . . . . . . . . . . . . . . ., 20-1 CapaCities . . . . . . . . . . . .'. . . . . .. 20-1 Type of Lubricant . . . . . . . . . . . . .. 20- 2 Service Intervals. . . . . . . . . . . . . .. 20-2 Changing Crankcase OU . . . . . . . . .. 20-3 Changing Transmission OU and FUter. 20-3 Grease Fitting Locations . . . . . . . .. 20-4·

Tractor, 140 (Serial No. SM-2Q86-(Aug-70)

Grade of Bolt

Min. Tensile Strength

Grade Marking an Bolt

U.S. Standard

Bolt U.S. Dec. Dia. Equiv.

1/4 .250 5/16 .3125 3/8 .375 7/16 .4375 1/2 .500 9/16 .5625 5/8 .625 3{4 .750 7/8 .875 1 1.000

-30,000)

BOL T TORQUE CHART

SAE.2 SAE·5

64,000 105,000 PSI PSI

0 (> )

TORQUE IN FOOT POUNDS

6 10 13 20 28 35 35 55 55 85 75 130

105 170 185 300

*160 445 250 670

Multiply readings by 12 for inch pound values.

General 10 Specifications 10-3

SAE·8

150,000 PSI

~\/7 /\ Socket or Wrench Size

U.S. Regular

Bolt Head Nut

14 7/16 7/16 30 1/2 1/2 50 9/16 9/16 80 5/8 11/16

120 3/4 3/4 175 13/16 7/8 240 15/16 15/16 425 1-1/8 1-1/8 685 1-5/16 1-5/16

1030 1-1/2 1-1/2

*"B" Grade bolts larger than 3/4-inch are sometimes formed hot rather than cold which accounts for the lower recommended torque.

NOTE: Allow a tolerance of plus or minus 10% on all torques given in this chart.

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SET SCREW SEATING TORQUE CHART

Screw Size Cup Point Square Head

Torque in Inch Pounds

#5 9 --#6 9 --#8 20 --#10 33 --1/4 87 212 5/16 165 420 3/8 290 830 7/16 430 --1/2 620 2100 9/16 620 --5L8 1225 4250 3/4 2125 7700

Divide readings by 12 for foot pound values NOTE: Allow a tolerance of Plus or minus 10% on all torques given in this chart.

Section 20

ENGIN.E Group 5

GENERAL INFORMATION TABLE OF CONTENTS

GROUP 5 - GENERAL INFORMATION De scription • • • • • • • • • • • • • • • • • 5 - 3 Engine Analysis • • • • • • • • • • • • • • 5-4

Preliminary Engine Checks • • • • • 5-4 Preliminary Engine Tests • . • • • • 5- 5

Diagnosing Malfunctions • • • • • • • • • 5-7

GROUP 10 - CYLINDER HEAD, V ALVES AND BREATHER

General Information. • • • • •• • • • • • 10-1 Valve Analysis. • • • • . • • • • • • • • • 10-2 Repair . . . . . . . . . . . . . . . . . . . . 10-3

Removing Valves. • • • • • • • • • •• 10-4 Inspecting Cylinder Head. • • • . •• 10-4 Inspecting Breather. • • • • • • • • • 10-5 Testing Valve Springs • • • • • • • • 10-5 Inspecting Valves. • • • • • • • • • • • 10-5 Reconditioning or Replacing Valves 10-6 Replacing Valve Guides. • • • • • • • 10-7 Replacing Exhaust Valve Insert. •• 10-8 Checking Valve Clearance. . . • • • 10-8

Installation • • • . • • • • . • • • • • • • •• 10-9 Installing Valve Springs, Retainers

and- Keepers ............. . Assembling Breather •••••••••• Installing Cylinder Head ••••.••• Installing Carburetor • • • • ••• • • • Checking Air Filter • • • ••• . • . •• Spark Plug Gap • • • • • • • • • • • •• Breaker Point Gap •••••••••••

Specifications • • • • • • • • • • • • • • •• K301AS Kohler Engine ••••••••• Table of Clearances •••••••••• Torque for Hardware • • • • • • • • • Tune- Up Data ••••••••••••••

Special Tools .••••.•.••••••••

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10-9 10-9 10-9

10-10 10-10 10-10 10-10 10-11 10-11 10-11 10-11 10-11 10-12

GROUP 15 - PISTON, CRANKSHAFT, MAIN BEARINGS AND FLYWHEEL

General Information. • • • • •• • • . •. 15-1 Repair . . . . . . .. . . . . . . . . . . . . . 15- 2

Removing Engine Using OTC Stand 15-3 Removing Engine Without Stand. •• 15-3 Engine Service SupJ?ort Stand. • • • 15-3 Disassembling Engine. • • • • • • • • 15-4 Removing Ring Gear. • • • • • • • • • 15-4 Removing Piston Rings. • • • • • • • 15-5 Piston Ring Analysis. • • • .• . . • • 15-5 Inspecting Piston. • • • • • . • . • • • 15-7 Piston Analysis. • • • • • • • • • . •• 15-8 Inspecting Crankshaft. • • • • • • •• 15-10 Connecting Rod and Cap Analysis.. 15-10 Inspecting and Repairing Block. •• 15-11 Deglazing Cylinder Bore. • • • • .• 15-12 Boring Cylinder Block. • • • • • •• 15-12 Inspecting Camshaft. • • • • • • • •• 15-12 Inspecting Main Bearings. • • • ••. 15-12 Bearing Analysis ••••• ~ • • • • •• 15-12

Installation. . • • • • • • • • • • • • • •• 15-14 Installing Crankshaft. • • • • • . •• 15-14 Assembling Bearing, Bearing Plate

and Oil Seals. • • • • • . . • • • .. 15-14 Assembling Connecting Rod and

Piston. . . . . . . • . • . . . . . . .. 15-15 Checking Piston Ring End Gap • •• 15-16 Installing Rings and Piston. • • ••• 15-16 AttaChing Rod to Crankshaft. • • •• 15-17 Installing Oil Pan on Block. • • •• 15-17 Installing Ring Gear on Flywheel. 15-17 Installing Flywheel. • • • • • • • • •• 15-18 Installing Shrouding. • • • • • • • •• 15-18 Installing Exterior Components •• 15-18 Installing Engine. • • • • • • • • • •• 15-19

Continued on next page

20 Engine Tractor, 140 (Serial No. -30,000) 5-2 General Information SM-2086-(Aug-70)

TABLE OF CONTENTS -Continued

Adjustment. • . . . . . . . . . . . . . . .. 15-20 Throttle Linkage Adjustment. . . .. 15-20 Governor Speed Adjustment. . . .. 15-20

Specifications. . . . . . . . . . . . . . .. 15-21 K301AS Kohler Engine. . . . . . . .. 15-21 Table of Clearances . . . . . . . . .. 15-21 Torques for Hardware. . . . . . . .. 15-21 Tune-Up Data. . . . . . . . . . • . . .. 15-21

Special Tools . . . . . . . . . . . . . . .. 15-22

GROUP 20 - CAMSHAFT, TAPPETS AND GOVERNOR

General Information. . . . . . . . . . .. 20-1 Automatic Compression Release

Camshaft. . . . . . . . . . . . . . .. 20-2 Repair. . . . . . . . . . . . . . . . . . . .. 20-3

Removing Camshaft and Tappets .. 20-3 Removing Governor. . . . . . . . . .. 20-4 Inspecting Camshaft . . . . . . . . .. 20-4 Inspecting Governor Gear. . . . . .. 20-4

Installation. . . . . . . . . . . . . . . . .. 20-4 Installing Governor. . . . . . . . . .. 20-4 Installing Camshaft. . . . . . . . . .. 20-5 Installing Governor Arm. . . . . .. 20-5

Specifications . . . . . . . . . . . . . . .. 20-6 K301AS Kohler Engine. . . . . . . .. 20-6 Table of Clearances .. . . . . . . .. 20-6 Torque for Hardware. . . . . . . . .. 20-6 Tune-Up Data. . . . . . . . . . . . . .. 20-6

Spe,cia! Tools . . . . . . . . . . . . . . .. 20-6

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GROUP 25 - KOHLER K321AS ENGINE (Serial No. 10,001-30,000)

General Information ........... . Valves ................ _ .... . Cylinder Head. . . . . . . . . . . . . . . . Engine Disassembly. . . . . . . . . . . . DynamiC Engine Balancer ....... .

General Information . . . . . . . . . . Removal ................. . Installation . . . . . . . . . . . . . . . .

Engine Assembly. . . . . . . . . . . . . . SpeCifications . . . . . . . . . . . . . . . .

Torque for Hardware. . . . . . . . . . Tune-Up Data. . . . . . . . . . . . . . . Table of Clearances . . . . . . . . . .

Special Tools . . . . . . . . . . . . . . . .

25-1 25-2 25-2 25-2 25-3 25-3 25-5 25-5 25-8 25-9 25-9 25-9

25-10 25-11

GROUP 30 - SHORT BLOCKS AND SERVICE ENGINES

General Information. . . . . . . . . . .. 30-1 Short Block Assemblies . . . . . . . .. 30-2

Preliminary Engine Analysis . . .. 30-2 Disassembly . . . . . . . . . . . . . .. 30-2 Assembly . . . . . . . . . . . . . . . .. 30-3 Installation . . . . . . . . . . . . . . .. 30-3

Complete Service Engine Assemblies 30-5 Removing Old Engine. . . . . . . . .. 30-5 Preparing New EngiO.e. . . . . . . .. 30-5 Installing New Engine . . . . . . . .. 30-6

SpeCifications . . . . . . . . . . . . . . .. 30-7 Torque for Hardware. . . . . . . . .. 30-7

Special Tools . . . . . . . . . . . . . . .. 30-7

20 10-4

Engine Cylinder Head, Valves and Breather

Tractor, 140 (Serial No. -30,000) SM-2086-(Aug-70)

REPAIR-Continued

It is not necessary to remove the engine from INSPECTING CYLINDER HEAD the tractor when servicing the cylinder head, head gasket, muffler, breather assembly, valves and valve seats.

Disconnect choke conduit and cable at car­buretor. Remove carburetor, breather assembly, head bafile, cylinder head and head gasket.

REMOVING VALVES

Fig. 7 - Removing Valves

Use a valve spring compressor to compress valve springs, Figure 7. Remove keepers from valve stem and lift valves from engine block.

Remove valve spring retainers and valve springs from valve chamber. Note the rotator type retainer and that the exhaust valve spring is shorter than the intake valve spring.

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Fig. 8 - Cleaning Cylinder Head

Remove all deposits from combustion cham­ber and gasket surface of head with a scraper and a wire brush, Figure 8.

Be careful not to damage the cylinder head gasket surface. Use a safe cleaning solvent to remove dirt, grease and other deposits.

Fig. 9 - Checking Surface of Cylinder Head

Check the cylinder head for cracks and broken COOling fins and inspect the gasket surface for burrs and nicks. Replace the head if any of these conditions are found.

When a cylinder head is removed because of gasket leaks, check the flatness of the cylinder head by plaCing it on a surface plate, Figure 9. Check to see that gasket surfaces make contact at all points. Replace the cylinder head if it is warped.

NOTE; Always 'USe new head gasket ajterre­moving cylinder head.

Section 30

FUEL SYSTEM Group 5

GENERAL INFORMATION

TABLE OF CONTENTS

GROUP 5 - GENERAL INFORMATION Principle of Operation . . . . . . . . . .. 5-2 Diagnosing Malfunctions . . . . . .. . .. 5-3

GROUP 10 - CARBURETOR General Information. . . . ... . . . . .. 10-1 Repair ....... , . . . . . . . . . . . . .. 10-1

Disassembling Carburetor. . . . . .. 10-1 Cleaning Carburetor, ......... '. 10-1 Inspecting Carburetor. . . . . . . . . . '-10-2

Assembly ................... ',_ 10-3 Installing Float Valve. , .... , . , . :. 10-3 Installing Float and Float Shaft ... , 10-3

Installation ....... , .... , . . . . .. 10-3 Adjustment ...... , .......... ,. 10-4

Carburetor. . . . . . . . . . . • . . • .. 10-4 Governor and Throttle ...•..... 10-4

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GROUP 15 - AIR CLEANER General Information ..... ,. . . . . .. 15-1 Service. . . . . . . . . . . . . . . . . . . .. 15-1

GROUP 20 - SEDIMENT BOWL, FUEL STRAINER AND GAS TANK

Sediment Bowl ( -10,000) . . . . .. 20-1 Fuel Strainer ( -10,000) . . . . .. 20-1 Fuel Strainer (10,001- ) . . . . .. 20-2 Gas Tank . . . . . . . . . . . . . . . . . .. 20-2 Special Tools. . . . . . . . . . . . . . . .. 20-2

Section 40 ELECTRICAL SYSTEM

Group 5 GENERAL INFORMATION

TABLE OF CONTENTS

GROUP 5 - GENERAL INFORMATION Principle of Operation ......... . Wiring Diagrams • . • • . . • . • • . . • Installing AM32175 Main Wiring

Harness ................................ .. Relocating Main Wiring Harness ..• Testing ...................................... .. Diagnosing Malfunctions ........ '.

GROUP 10 - CRANKING SYSTEM Principle of Operation. . . . . . . . . .

Battery .•.•...••.•......• Key Switch ............... . Solenoid .•..•..•.•••..•..• Starting Motor (Wire Wound Fields) Starting Motor (Permanent Magnet

Fields) ................ . Testing •.•...•...•.•......•

Battery ................. . starter .................................. .. Solenoid ..............•..• Switches .•..•..••..•..•...

Analysis ..•................ Inspection . . . . . . . . . . • . . . . . . . Repair ...................................... ..

Battery .•.•••.••........• Solenoid ........•......... Neutral-Start Switch •..•.....• Starter, Wire Wound ......... . Starter, Permanent Magnet .•...

Page

5-2 5-3

5-6 5-7 5-8 5-8

10-1 10-1 10-2 10-2 10-3

10-4 10-5 10-5 10-6 10-8 10-8 10-9

10-10 10-10 10-10 10-12 10-12 10-12 10-14

GROUP 15 - MAGNETO IGNITION SYSTEM (Serial No. -10,000)

Principle of Operation. . . . . . . . . . Ignition Coil . . . . • • . . • . . • . . • Breaker Points •............ Spark Plug .•..•..•...•..•. Condenser ............... .

Analysis •..••......•.•...•. Spark Plug ..............•. Breaker Points . • . . • • . • • . . • .

Testing .•...•.............. Ignition Coil • • . • . . • • . • • . • • . Condenser ..............•. Spark Plug •.•.•..••.••....

Inspection • • • . . . • . . • • • • . . . • . Repair ...................................... ..

Spark Plug ••..••.••.••..••

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15-1 15-2 15-2 15-3 15-3 15-4 15-4 15-6 15-7 15-7 15-8 15-8 15-9 15-9 15-9

Page

Ignition Coil. • . • . • • • . • • . . •. 15-10 Condenser . . . . . . • . . . . . . . .. 15-10 Breaker Points. • • • • • . . . . . •. 15-10

Adjustments. . • . . . • . . • . . . . . .. 15-11 Breaker Points. • • . • • • • • . . •• 15-11

GROUP 20 - SOLID-STATE IGNITION SYSTEM (Serial No. 10,001-22,400)

PrinCiple of Operation. • . . . . . . . . Adjusting Trigger Air Gap . • • . . . . Testing .••..•.••..••.......

Spark Plug .•...•..•.....•. Silicon Controlled Rectifier ..... Trigger Assembly Continuity. . • . Ignition Coil ....•.....•.... AC Leads and Windings ....... .

GROUP 25 - BATTERY-COIL IGNITION SYSTEM (Serial No. 22,401-30,000)

Principle of Operation. • • . . • . . • • Testing ................... . Inspection ••.•..••..•..•..•. Repair ...................................... .. Adjustments. • • . . . • . • . . . . . . . . Specifications. . . . . . . . . . . . . . . . Special Tools .•..•..••..•....

GROUP 30 - CHARGING SYSTEM

.20-1 20-4 20-4 20-4 20-4 20-6 20-7 20-8

25-1 25-4 25-6 25-6 25-8

25-10 25-10

Principle of Operation. • • • . . . . •• 30-1 Alternator . . . • . . . . . . . . . . .. 30-2 Rectifier-Regulator . • . . . • . . •• 30-3

Regulator Wiring Change ( -3,569). • . • • • . • . . • • . •• 30-3

Testing. . . . . . • . • . . • • . . . . . .. 30-4 Circuit Wiring. • • • • • • . . • . . .. 30-4 Alternator and Regulator. . . . . .. 30-4

Repair • • • • • . • • . . • • . • • . . . .. 30-6 Replacing Fuse inRectifier - Reg-

ulator. • • • . • • • • • . • • . • . .. 30-6

GROUP 35 - PTO CLUTCH, LIGHTS AND ACCESSORIES

PTO Clutch ••........••.•.. , 35-1 Testing • • • . . • . . • • . . • . • • •. 35-1 Servicing. . . . . . . . . . . . . . . .. 35-2

Lights. • • . • • . . • • . • • • • • . . • .. 35-2 Circuit Breakers . . . . • . . . . . . .. 35-3 Ammeter.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... 35-3 Cigarette Lighter • . . . . . . . . . . .. 35-3

Tractor, 140 (Serial No. SM-2086-(Aug-70)

M 9348

-30,000)

13

Electrical System 40 Cranking System 10-13

1 - Through Bolt 2 - Commutator End Cap 3 - Lock Washer

9 - Starter, Complete 10 - Special Bolt

17 - Large Washer 18 - Spline

11 - Armature 19 - Pinion Gear 20 - Sleeve 4 - Brush Kit and Spring

5 - Hex. Nut 12 - Spacing Washers

6 - Lock Washer 7 - Washer

13 - Drive End Assembly Cap 14 - Clutch Hub

21 - Washer 22 - Spring

15 - Clutch Disk 23 -Retainer 8 - Insulating Washer 16 - Clutch Disk Retainer ~4 - Locking Nut

25 - Tail Brace

Fig. 2O-Components of Storter Motor

Replace brushes, Figure 20, ifunevenlyworn or worn to less than 5/16-inch length. Always replace springs and brushes whenever a starter is reconditioned. This can be done by replacing entire end cap assembly with bru.sh kit or by replacing brush kit alone.

If brush kit only is installed, drill out old rivet from end cap and rivet new negative brush

. in its place. Peel back insulating material and remove old positive brush from field winding. Solder or clip new brush to same field wire. Rewrap insulating material around new joint.

If a new end cap is to be installed, attach positive brush to field coll wire as described above. End cap contains apre-inStallednegative brush.

To complete installation of brushes, see assembly instructions.

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Armature Whenever starter is disassembled, check

brushes for wear. Clean commutator with a coarse cloth. If commutator is grooved or ex­tremely dirty, use a commutator stone or 00 sandpaper for polishing.

Do not use emery paper on commutators or brushes .

Never clean armatures in a degreasing-tank or with degreasing compounds as damage to the insulation might occur.

Check armature on growler for opens, shorts or grounds. See page 10-7 for test procedure and repair recommendations.

Section 50 POWER TRAIN

Group 5 GENERAL INFORMATION

TABLE OF CONTENTS

GROUP 5 - GENERAL INFORMATION Description. . . . . . . . . . . . . . . . . .

GROUP 10 - CLUTCH, DRIVE SHAFT, COUPLING AND BRAKES

PrinCiple of Operation . . • . • . . . . . New Flex-Coupling •.......... Clutch .........•.••....... Couplings ...•.•.•.••...... Brakes .................. .

Diagnosing Malfunctions . . . . . . . . . Clutch ................... . Brakes .................. .

Analysis ...........•........ Clutch Cup Lining. . • • . . . . . . . . Clutch Bushing. . . . . . . . . . . . . . Clutch Pilot Shaft . . . . . . . . . . . . Brake Shoes. . . . . . • • . . . . . . . .

Clutch Repair . . . . . . . • . . . . . . . . Disassembly . • . • . . . • . • . . . . .

Clutch ................. . Cone .................. . Drive Hub ...............•

Installing Flex-Coupling Drive Shaft Kit ................ .

Inspecting Clutch Parts . . . . . . . . Cup ............•....... Drive Hub ..•.......•..... Springs ........•........ Thrust Washers ...•........ Drive Shaft. . . . . . . • . . . . . . . Drive Disk .............. . Drive Hub and Fan Hub. . . . . . .

Assembly ................ . Drive Hub ............... . Cone ...•...........•... Cup, Screen and Drive Shaft. . . .

Clutch Adjustment . . . . . . . . • • . . • Brake Repair ( -10,000) ..... .

Replacing Brakes Shoes and Disk. .

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Page

5-3

10-1 10-1 10-2 10-2 10-2 10-3 10-3 10-3 10-4 10-4 10-4 10-4 10-4 10-5 10-6 10-6 10-6 10-6

10-7 . 10-7 10-7 10-7 10-8 10-8 10-8 10-8 10-8 10-8 10-8 10-9 10-9

10-10 10-11 10-12

Page

Inspecting Brake Parts . . . . . . .. 10-12 Brake Shoes . . . . . . . . . . . . .. 10-12 Brake Disk. . . . . . . . . . . . . .. 10-12 Springs . . . . . . . . . . . . . . . .. 10-12

Assembly . . . . . . . . . . . . . . . .. 10-12 Brake Repair (10,001- ). . . . .. 10-12 Brake Adjustment . . . . . . . . . . . .. 10-13 Specifications . . . . . . . . . . . . . . ., 10-14 Torques for Hardware. . . . . . . . .. 10-14 Special Tools . . . . . . . . . . . . . . .. 10-14

GROUP 15 - HYDROSTATIC TRANSMISSION General Information. . . . . . . . . . .. 15-1

Two Basic Principles of HydrauliCS 15-1 Applying Basic Principles to Operation of Hydrostatic System. 15-1

Controlling Operation of Hydrostatic System. . . . . . . . .. 15-2

Operation of High Pressure Circuit 15-3. Operation of Charge Pressure

Circuit and Valves. . . . . . . . . .. 15-4 Operation of Acceleration Control

and Relief Valves .......... . Operation of Hydrostatic Drive Unit

Diagnosing Malfunctions . . . . . . . . . Transmission. . . . . . . . . . . . . . . Hydraulic Lift System . . . . . . . . .

Analysis ......•............. Pistons and Slippers ......... . Cylinder Block ............. . Valve Plate ............... .

Testing with OTC Model Y -90 Tester

15-5 15-6 15-8 15-8 15-9

15-10 15-10 15-10 15-10

High Pressure Test. . . . . . . . . .. 15-11 Charge Pressure Test. . . . . . . .. 15-12 Implement Circuit Pressure Test. 15-12

Testing without OTC Model Y -90 Tester . . . • . . . . . . . . . . . . . .. 15-13

Removing TranSmission from Tractor. . . . . . . . . . . . . . . . . .. 15-13

(Continued on next page.)

50 . Power Train 5-2 General Information

Page

GROUP 15 - HYDROSTATIC TRANSMISSION -Continued

Pump Repair. . . . . . . . . . . . . . . . . Making Transmission Repair Stand Disassembling Pump. . . . . . . . . .

Removing Swashplate . . . . . . . . Removing Lip Seal. . . . . . . . . . Removing Trunnion Bearings ... Removing Valve Plate .•....•.

Inspecting Pump Parts. . . . . . . . . Slippers and Pistons ........ . Cylinder Block . . . . . . . . . . . . Thrust Plate. . . . . . . . . . . . . . Valve Plate .............. . Gerotor Set .............. .

Repairing Pump Parts. . . . . . . . . Lapping ................ . Refacing Pump Housing ...... .

Assembling Pump . . . . . . . . . . . . . Seals and Bearings ......... . Swashplate . . . . . . . . . . . . . . . Thrust Plate. . . . . . . . . . . . . . Checking Stack-Up. . . . . . . . . . Valve Plate .............. .

Gear Motor Repair. . . . . . . . . . . . . Disassembling Gear Motor. . • . . . Inspecting Gear Motor Parts .... .

Gears and Spacer Plate ...... . Shafts ................. . End Cap and Valve Body ..... . Bearings ............... .

Assembling Gear Motor ....... . Bearings ............... . Output Gear and Shaft. . . . . . . . Idler Gear and Shaft. . . . . . . . . Spacer Plate. . . . . . . . . . . . . . End Cap ................ .

Rear Power Take-Off Repair. . . . . . Disassembling Rear Power

Take-Off ................ . Inspecting Rear Power

Take-Off Parts. . . . . . . . . . . . . Ball Bearing ............. . Needle Bearing . • • • . • . • . .. • Shaft .................. . Coupling ................ . Seal ................... .

Assembling Rear Power Take-Off . Needle Bearing . . . . . . . . . . . . Ball Bearing. . . . • • . . . . . . . . Seal and Rear Cap • . • . . . . . . • PTO Shaft ....•.•...•.....

Valves and Valve Body Repair •.... Acceleration Control and Relief

Valves .......•.•...•...•.

Litho in U.S.A.

15-14 15-15 15-15 15-15 15-16 15-16 15-16 15-17 15-17 15-17 15-18 15-18 15-18 15-19 15-19 15-19 15-20 15-20 15-20 15-20 15-21 15-22 15-23 15-24 15-24 15-24 15-25 15-25 15-25 15-26 15-26 15-26 15-26 15-26 15-27 15-28

15-28

15-29 15-29 15-29 15-29 15-29 15-29 15-29 15-29 15-29 15-30 15-30 15-31

15-32

Tractor, 140 (Serial No. -30,000) SM-2086-(Aug-70)

Page

Metering Plug. . . . . . . . . . . .. 15-32 Springs and Seat. . . . . . . . . .. 15-32 Cone and Seat ........... " 15-32

Charge Relief Valve, Implement Relief Valve and Flow Directional Check Valve. . . . . . . . . . . . . .. 15-33

Free Wheeling Valve. . . . . . . . .. 15-34 Installing TransmiSSion . . . . . . . .. 15-34 Specifications . . . . . . . . . . . . . . .. 15-35 Torque for Hardware . . . . . . . . . .. 15-35 Special Tools . . . . . . . . . . . . . . .. 15-36

GROUP 20 - DIFFERENTIAL AND AXLE Description. . . . . . . . . . . . . . . . .. 20-1 Axle Repair ( -14,750) ..... " 20-1

Disassembling Axle. . . . . . . . . .. 20-1 Inspecting Axle Parts . . . . . . . .. 20-2

Roller Bearings. . . . . . . . . . .. 20-2 Axles. . . . . . . . . . . . . . . . . .. 20-2 Oil Seals . . . . . . . . . . . . . . .. 20-2 Wheel Hubs. . . . . . . . . . . . . .. 20-2

Assembling Axle. . . . . . . . . . . .. 20-2 Installing Bearing Retainer Kit. . . .. 20-3 Differential Repair. . . . . . . . . . . .. 20-4

Removing Differential . . . . . . . .. 20-4 Disassembling Differential. . . . .. 20-5 Inspecting Differential Parts. . . .. 20-6

Needle Bearings . . . . . . . . . .. 20-6 Gears. . . . . . . . . . . . . . . . .. 20-6 Suction Tube. . . . . . . . . . . . .. 20-6 Axle Housing. . . . . . . . . . . . .. 20-6 Fill Tube. . . . . . . . . . . . . . .. 20-6

Assembling Differential. . . . . . . . 20-6 Needle Bearings . . . . . . . . . .. 20-6 Drive Gear. . . . . . . . . . . . . .. 20-6

Installing Axle Vent Kit . . . . . . .. 20-8 Installing Differential . . . . . . . .. 20-8

Differential and Axle . . . . . . .. 20-8 Transmission. . . . . . . . . . . .. 20-8

SpeCifications. . . . . • . . . . . . . . .. 20-9 Torque for Hardware . . . . . . . . . .. 20-9 Special Tools. . . . . . . . . . . . . . .. 20-9

GROUP 25 - CONTROL CAM AND LINKAGE General Information. . . . . . . . . . .. 25-1 Diagnosing Malfunctions. . . . . . . .. 25-1 Removing Cam and Linkage. . . . . .. 25-2 Inspecting Parts . . . . . . . . . . . . .. 25-2

Cam Assembly. . . . . . . . . . . . .. 25-2 Linkage. . . • . . . . . . . . . . . . . .. 25-2 Hydrostatic Control Lever. . . . .. 25-2

Assembling Cam and Linkage. . • . .. 25-3 Installing New Spring for Improved

Control of Hydrostatic Cam. . . .. 25-4 Adjusting Cam and Linkage. . . . . •. 25-5

Section 60

HYDRAULIC LIFT SYSTEM Group 5

GENERAL INFORMATION TABLE OF CONTENTS

Page Page

GROUP 5 - GENERAL INFORMATION GROUP 20 - HYDRAULIC CYLINDERS Principle of Operation . . . . .. . . . .. 5- 2 Analysis . . . . . . . . . . . . . . . . . . .. 5-4 Testing the Hydraulic System. . . ... 5-4 Diagnosing Malfunctions . . . . . . . .. 5-4

GROUP 10 - HYDRAULIC CIRCUITS General Information. . . . . . . . . .. 10-1 Hydraulic Couplers . . . . . . . . . . .. 10-4

GROUP 15 - HYDRAULIC CONTROL VALVES General Information. . . . . . . . . .. 15-1 Removal. . . . . . . . . . . . . . . . . .. 15-1 Disassembly . . . . . . . . . . . . . . .. 15-2

I-Spool Valve. . . . . . . . . . . . .. 15-2 2-Spool and 3-Spool Valves ... " 15-2

Repair . . . . . . . . . . . . . . . . . . .. 15-2 Assembly ...........•...... , 15-3 Installation. . . . • . . . . . . . . . . . .. 15-3

Litho in U.S.A.

General Information . . . . . . . . . . .. 20-1 Testing . . . . . . . . . . . . . . . . . . .. 20-1 Repair . . . . . . . . . • . . . . . . . . . .. 20-2 Installation. . . . . . . . . . . . . . . . .. .20-2 Specifications . . . . . . . . . . . . . . .. 20-2

GROUP 25 - EQUIPMENT COMPOUNDING General Information. . . . . . . . . . .. 25-1 Multiple Hookups with H-3 Tractor.. 25-1 Multiple Hookups with H-l Tractor.. 25-2

Section 70

MISCELLANEOUS Group 5

GENERAL INFORMATION

T ABLE OF CONTENTS

GROUP 5 - GENERAL INFORMATION

steering .................. . Front Wheels and Axles . . . .. . . . . Fender-Deck and Seat . . . . . . . . . . Diagnosing Malfunctions . . . . ... . .

GROUP 10 - STEERING ASSEMBLY

General Information . . . . . . . . . . . Analysis .........•.........

Seal and Retainer . . . . . . . . . . . Housing ................. . Lever Arm Pivot Bolt . . ... . . . . Drag Link ................ . Spindle .................. . Ball Joints ............... .

Repair ................... . Removing Steering Wheel and

Steering Gear . . . . . . . . . . . . Disassembling Steering Gear . . . Inspecting Steering Gear . . . . . .

Assembly ................ . Assembling Steering Gear . . . . .

Installation . . . . . . . . . . . . . . . . Installing Steering Gear ..... . Installing Steering Linkage . . . . . Completing Installation . . . . . .. .

Steering Adjustment . . . . . . . . .. . steering Arm stop Screws . . . . . Steering Cone Adjustment . . . . . . steering Gear Alignment

Tractors ( -10,000) .... . Tractors (10,001- ) .... .

Stop Screws . . . . . . . • . . . . . • .

Litho in U.S.A.

Page

5-2 5-2 5-2 5-3

10-1 10-2 10-2 10-2 10-2 10-2 10-3 10-3 10-3

10-4 10-5 10-5; 10-5 10-5 10-6 10-6 10-7 10-7 10-7 10-7 10-8

10-8 10-9 10-9

Steering Gear Adjustment Tractors ( ... 10,683) .... . Tractors (10,684- ) .... .

Front Wheel Toe-In . . . . . . . . . . Torque for Hardware .......... . Special Tools . . . . . . . . . . . . . . . .

Page

10-9 10-10 10-10 1O-fO 10-10

GROUP 15 - FRONT WHEELS AND AXLE

Introduction . . . . . . .. . . . . . . . . . Repair ................... .

Removing Front Wheels ...... . Removing Spindles . . ....... . Removing Front Axle . . . . . . . . . Inspecting Bearings . . . . . . . . . . Inspecting Axle Bushings . . . . . . Removing Axle Bushings ...... .

Installation . . . . . . . . . . . . . . . . . Installing Axle BuShings . . . . . . . Installing Axle . . . . . . . . . . . . . Installing Spindles . . . . . . . . . . . Installing Bearings and Wheels . .

Adjustment . . . . . . . . . . . . . . . . . Front Wheel Bearing ........ .

Inner Tubes Available . . . . . . . . . . Specifications . . . . . . . . . . . . . . . Torque for Hardware ......... . Special Tools . . . . . . . . . . . . . . .

GROUP 20 - FENDER-DECK AND SEAT ASSEMBLY

General Information . . . .... . . . . . RemOVal and Installation . . •.. . . . . Seat Adjustment . . .•... . . . . . . . . Repair .................... .

15-1 15-1 15-2 15-2 15-2 15-2 15-2 15-3 15-3 15-3 15-3 15-4 15-4 15-4 15-4 15-5 15-5 15-5 15-5

20-1 20-1 20-1 20-2