CA-S-930

JJ..II .. CCaasseeService Manual

930 SeriesLP & Diesel

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF J.I. CASE OR IT’S SUCCESSORS. J.I. CASE 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.

Serv

ice

Man

ual

TABLE OF CONTENTS- 930 SERIES COMFORT KING

Description

Specifications, General .. (engine wear limits, torque specifications)

Specifications, Electrical ....... . (charging circuit, cranking circuit, ignition system, wiring diagrams)

Group Section Page

I ... . . C ... C-1 thru C-8

I . . . . . . F . . . . . . . . . . . . . F-1 thru F-30

Diesel Engine Cylinder Head Assembly ... II . . . . . K . . . . . . . . . . . . . K-1 thru K-16 (rocker arms, manifolds, valves)

LP Gas Engine Cylinder Head Assembly. (rocker arms, manifolds, valves)

II . . . . . L . . . . . . . . . . . . . L-1 thru L-13

Assemblies in the Engine Block .... II . . . . . M ............. M-1 thru M-48 (oil pump,pistons, connecting rods, sleeves, rings, crankshaft, camshaft, lifters, injection pump drive)

Spark Ignition Governor ..... . II .....

Diesel Fuel Injectors . . . . . . . . . . . . . . III .

Case Diesel Powrcel . . . . . . . . . . . . . . III .

Diesel Fuel Injection Pump ..... (adjustments, timing, linkage)

LP Gas Regulator and Carburetor .

III .

III .

Hydraulic Cylinders . . . . . . . . . . . . . . . IV .

Hydraulic Pump and Control Valve IV .

Power Steering System . . . . . . . V .

Power Steering Pump . . . . . . . . . . . V . (pressure check, pump relief valve)

Transmission ......... . VI .... (brake linings and drums)

M & Supp,#1 ...... M-50 thru M-59

l . 1-1 thru 1-25

I . 1-26 thru 1-32

l . I-33 thru 1-43

K. N-1 thru N-8

A. A-1 thru A-8

D. D-1 thru D-22

0. 0-1 thru 0-27

P. P-1 thru P-23

s ............ . S-1 thru S-46

Traction Clutch . . . . . . . . . . . VI ..... SS ............ SS-1 thru SS-15 (hand and foot)

PTO Clutch . . . . . . . . . . . . . . . . . . . . . VI . . . . . 3S . . . . . . . . . . . . 3S-1 thru 3S-12

·Rae. Form 9-74911 Table of Contents EA ACE

TABLE OF CONTENTS

BATTERY ................ . Visual Inspection ......... . Specific Gravity Check ..... . Open Circuit Battery Cell Test. Cranking Voltage Battery Test. Battery Bench Load Test

REGULATORS .. Introduction .. Specifications . Test Hook Ups.

GENERATORS ... Introduction . . . . . . . . . . . . . Specifications and Belt Adjustment Test Hook Up . . . . . . . . . . . . . .

F-3 thru F-5 . ..... F-3 . F-3 and F-4

. F-4

. F-5

. F-5

. F-6 thru F-8 F-6 F-7 F-8

. F-9 thru F-11 . F-9 F-10 F-11

CRANKING MOTOR SWITCHES .......................... F-12 and F-13 Specifications .................................. '.: . . . . . . F-13 Test Hook Up . . . F-13

CRANKING MOTORS. Specifications . . . Test Hook Up . . .

IGNITION SYSTEMS . Distributors .. Ignition Coils . Coil Resistors.

SPARK PLUGS ..

WIRING DIAGRAMS 930 Series LP Gas Tractors 930 Series Diesel Tractors . 930 Series Comfort King LP Gas Tractors . 930 Series Comfort King Diesel Tractors ..

INTRODUCTION

F-14 F-14 F-14

F-15 thru F-22 F-15 thru F-21

F-21 . ..... F-22

F-23 thru F-26

F-27 thru F-30 F-27 F-28 F-29 F-30

Section F contains the specifications and wiring diagrams necessary to diagnose and make minor adjustments on the electrical components on the Case Series 930 and 930 Comfort King Tractors.

All major adjustments and overhaul of electrical components should be performed by an Authorized Electrical Service Station (Delco - United Motors Service , Auto Lite - Auto Lite Service Station) where specialized equipment and trained personnel are available.

Mose electrical systems will operate "trouble free" with a regular schedule of "minor ad­justments." Major problems with electrical components usually arise out of unauthorized per­sonnel" tinkering" with the system.

DO NOT ATTEMPT EVEN MINOR ELECTRICAL ADJUSTMENTS WITHOUT THE AID OF THE PROPER TEST EQUIPMENT

F-2

Spark Plugs

Spark plugs that have been worn out by normal service can be iden­tified by a light brown to grayish tan dry deposit which indicates a balanced ignition and combustion system and the plugs are of the pro­per heat range.

NOTE: If a highly leaded fuel is used a white powdery or yellow glazed deposit will appear. These deposits should be cleaned off regularly.

Cleaning and Gapping Spark Plugs

Figure F-43

Use an abrasive type cleaning machine (if available) to remove the deposits on the plug;ifter this has been done, wire brush the threads.

File the electrode sparking areas to obtain bright flat parallel surfaces. The plugs should be washed in a good cleaning solvent and blown dry with air pressure. Reset the gap between the electrodes to .025 Inch.

Set the gap by bending the ground or outside electrode, never try to bend the center electrode as the insulator will crack.

Use a round type feeler gauge to measure the gap as a flat type feeler gauge will give a false reading, Figure F-44.

FLAT TYPE FEELER GAUGE CAN GIVE FALSE READING

ROUND TYPE FEELER GAUGE, GIVES MORE ACCURATE READING

Figure F-44

Installing the Spark Plugs

Make sure the cylinder head threads and the gasket seats are clean. Always install a new gasket whenever a spark plug has been removed and reinstalled. Use a thin wall deep socket type spark plug wrench (7 /8") and torque to 34 foot pounds. If a torque wrench is not used tight­en each pluguntil the plug, gasketandhead make contact and then give them 3/4 of a turn which will compress the gasket properly. Replace spark plug wires in the order in which they were removed.

F-26

TABLE OF CONTENTS

REMOVAL, INSTALLATION OF CYLINDER HEAD AND COMPONENTS ..... K-2

INSPECTION, DISASSEMBLY, ASSEMBLY OF THE DECOMPRESSOR ....... K-4

DISASSEMBLY, INSPECTION,ASSEMBLY OF THE ROCKER ARM ASSEMBLIES. K-6

DISASSEMBLY, ASSEMBLY OF THE CYLINDER HEAD · K-8

EXHAUST VAL VE ROTATORS . . . . . . . . . . . . . . . . K-8

INSPECTION OF THE VALVES AND COMPONENTS, K-10

REFACING INTAKE AND EXHAUST VALVES . . . . . K-12

GRINDING, INSPECTION OF THE INTAKE AND EXHAUST VALVE SEATS· K-13

HOW TO DETERMINE THE TOP DEAD CENTER. . . . . . . . . . . . . . . . . . K-14

VALVE TAPPET CLEARANCE ADJUSTMENT. . . . . . . . . . . . . . . . . . . . K-15

REMOVAL OF CYLINDER HEAD AND COMPONENTS (Refer to Figure K-1)

Steam clean the engine completelybefore doing any disassembly or service work. Drain the cooling system. Remove the intake, exhaust and water manifolds. Remove the rocker arm covers. Disconnect and remove the decompressor if so equipped (Refer to Page K-4).

Remove the rocker arm assemblies and tag or mark them for proper installation. (Refer to Page K-6).

Disconnect the high pressure fuel lines to the injectors and cap them. Disconnect the fuel leak-off tubes between each cylinder head and cap them.

Remove the push rods and tag or store them in a holder or rack so they can be in­stalled in their same locations.

Remove the cylinder head bolts or nuts and lift the heads off the engine. Remove the head gaskets and discard them.

INSTALLATION C Refer to Figure K-1)

Remove all carbon and clean all parts be­fore installation. Install new cylinder head gasket with newrubberseals./M/>0/iTANT Gasket must be installed with either the cop­per side up or the side with the Case part number up. Install cylinder head in its ori­ginal location. Install cylinder head bolts or nuts finger tight. Install intake and exhaust manifold ferrules and new gaskets. (Refer to Inset B). NO TI When the manifolds are designed for the one piece manifold gasket, the ferrules are used only in the intake ports.

Coat the water manifold gaskets with per­matex and install them. Install intake, ex­haust and water manifold, nuts and bolts fin­ger tight. Torque the head bolts or nuts to the proper torque. Refer to "Specification" Section. Follow the tightening sequence shown in Inset A. Use special box end wrench Case part number 010316AB.

Torque the manifold bolts and nuts. Refer to the "Specification" Section for proper tor-

K-2

que. Install the push rods in their original locations. Connect the high pressure fuel lines and fuel leak-off tubes. Install the roc­ker arm assemblies in their original loca -tions.

Install the decompressor assembly if e­quipped. Refer to the "Specification" Section for proper torque of the mounting bolts. Ad­just the valve tappet clearances(Refer to Page K-14). Fill the cooling system and start the engine. Check that the rocker arms are receiving lubrication. Operate the engine at 1/2 throttle until it reaches proper operat­ing temperature. Continue to run the engine for 45 minutes. Stop the engine and torque the head bolts or nuts while the engine is still hot. Check and readjust the tappet clear­ances.

Clean the rocker arm covers and remove the old gasket .. Install new gaskets and seals and install covers. Refer to "Specification" Section for proper torque. Do not over torque the valve cover nuts.

TABLE OF CONTENTS

REMOVAL, INSPECTION OF CYLINDER HEAD AND COMPONENTS . L-2

DISASSEMBLY,INSPECTION,ASSEMBLY OF THE ROCKER ARM ASSEMBLIES . L-4

DISASSEMBLY, ASSEMBLY OF THE CYLINDER HEAD . L-6

EXHAUST VALVE ROTATORS ....... · · · · · · · · · L-6

INSPECTION OF THE VALVES AND COMPONENTS · L-8

REFACING INTAKE AND EXHAUST VALVES · · · · · L-10

GRINDING INSPECTION OF THE INTAKE AND EXHAUST VALVE SEATS L-11

HOW TO DETERMINE THE TOP DEAD CENTER L-12

VALVE TAPPET CLEARANCE ADJUSTMENT . . L-13

REMOVAL OF CYLINDER HEAD AND COMPONENTS (Refer to Figure L-1)

Steam clean the engine completely before doing any disassembly or service work. Drain the cooling system. Disconnect the fuel line, throttle and choke control at the carburetor. Remove the spark plug wires from each spark plug. Remove the intake, exhaust and water manifolds. Remove the rockerarm covers.

tag or mark them for proper installation. (Refer to Page L-4).

Remove the push rods and tag or store them in a holder or rack so they can be in­stalled in their same locations.

Remove the cylinder head bolts or nuts and lift the heads off the engine. Remove the head gaskets and discard them.

Remove the rocker arm assemblies and

INSTALLATION (Refer to Figure L-1)

Remove all carbon and clean all parts be­fore installation. Install new cylinder head gasket with new rubber seals.IMPORTANT Gasket must be installed with either the cop­per side up or the side with the Case part number up. Install cylinder head in its ori­ginal location. Install cylinder head bolts or nuts finger tight. Install intake and exhaust manifold ferrules and new gaskets. (Refer to Inset B). NOT{ When the manifolds are designed for the one piece manifold gasket, the ferrules are used only in the intake ports.

Coat the water manifold gaskets with per­matex and install them. Install intake, ex­haust and water manifold, nuts and bolts fin­ger tight. Torque the head bolts or nuts to the proper torque. Refer to "Specification" Section. Follow the tightening sequence shown in Inset A. Use special box end wrench Case part number 010316AB.

Torque the manifold bolts andnuts. Refer to the "Specification" Section for proper tor-

L-2

que. Install the push rods in their original locations. Reconnet the fuel line, throttle control and choke control. Reconnect the spark plug wires and refer to Section F of this service manual for proper firing order. Install the rocker arm assemblies in their original locations.

Adjust the valve tappet clearances (Refer to Page L-12. Fill the cooling system and start the engine. Checkthatthe rocker arms are receiving lubrication. Operate the engine at 1/2 throttle until it reaches proper operat­ing temperature. Continue to run the engine for 45 minutes. Stop the engine and torque the head bolts or nuts while the engine is still hot. Check and readjust the tappet clear­ances.

Clean the rocker arm covers and remove the old gasket. Install new gaskets and seals and install covers. Refer to "Specification" Section for proper torque. Do not over torque the valve cover nuts.

TABLE OF CONTENTS

ENGINE LUBRICATING SYSTEM ........................ M-4 thru M-13

Engine Lubricating System Diagrams . . . . . . . . . M-4 thru M-7; M-12 and M-13

Oil Pan Removal . . . . . . . . . . . .

Oil Pan Installation · · · · · · · · · · ·

M-8

M-8

Oil Pump Removal · . · , · . · · · · , .. , . . . . . . M-8 Disassembly · ... , · ...... · . · . . . . . . . . . . . . . . . . . . . . M-8 Inspection · · · ·- · · · , · · · · , · · · . · · · , · .................. -M-10 Assembly .. · , ................ -. . . . . . . . ......... M-10 Installation · · · · · · · · · · · · · · · · · · · · · , , , , . . . . . . ,M-10

Adjusting Oil Pump Pressure Relief Valve ........ . ,M-10

CHECKING COMPRESSION PRESSURE (Diesel) · · · · · · · · · · · ,M-14

CHECKING COMPRESSION PRESSURE (Spark Ignition) · · · , · , . · . , ·M-15

PISTONS, CONNECTING RODS, CYLINDER SLEEVES · · · · · · · · M-16 thru M-29

Removal and Disassembly· · · · · · · · · · · · · · · · · · · · · · · · · · · · M-16

Inspection · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · M-16 thru M-23 Connecting Rods ..................................... M-16 Pistons ...........................•............... M-16 Piston Pins ........................................ M-18 Bearing Caps and Liners ............................... M-18 Cylinder Sleeves ............................. M-19 thru M-21 Piston Clearances ............................. M-22 and M-23

Assembly and Installation .......................... M-24 thru M-29 Cylinder Sleeves ..................................... M-24 Piston Pin and Bushing ................................ M-24 Checking Ring End Gap ................................ M-26 Compression Rings ................................... M-26 Oil Rings ......................................... M-27 Pistons and Connecting Rods. . . . . . . . . . . . . . . . . . ......... M-28

CRANKSHAFT, MAIN BEARINGS, FLYWHEEL .......... . M-30 thru M-37

Removal and Disassembly. . . . . . . . . . . . . . . . . . . . . . . . .....• M-30

Inspection .................................... M-30 thru M-33 Crankshaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-30 Main Bearings .......................... · ...... M-32 and M-33

Assembly and Installation .......................... M-34 thru M-37 Checking Flywheel Housing Alignment ....................... M-36

M-2

TABLE OF CONTENTS (CONT'D)

CAMSHAFT, BUSIDNGS AND PUSH ROD LIFTERS .

Removal and Disassembly

Inspection . . . . . . . . . . .

Assembly and Installation . . . Checking Timing Gear Backlash.

FUEL INJECTION PUMP DRIVE .

Removal and Disassembly .

Inspection . . . . . . . . . .

Assembly and Installation

CHECKING TIMING POINTER ACCURACY ..

M-3

M-38 thru M-41

M-38

M-38

M-40 M-40

. .. M-42 thru M-44

M-42

M-42

M-44

M-44

ASSEMBLY AND INSTALLATION

(Refer to Figure M-51)

1. Install a new key on the shaft, lubricate the gear and shaft, align the keyway in the gear and carefully press the gear on the shaft.

CAUTION NEVER DRIVE A CAMSHAFT GEAR ON THE SHA FT. PRESS IT ON WITH THE CAMSHAFT REMOVED FROM THE EN­GINE. IF AN ATTEMPT IS M..A .. DE TO DRIVE A CAMSHAFT GEAR ON THE SHAFT WITH THE SHAFT IN THE EN­GINE, THE WELCH OR CUP PLUG AT THE REAR OF THE BLOCK WILL BE PUSHED OUT.

2. Torque the locknut. Refer to "Specifica­tion" Section. Bend the lip of the washer against the nut. Always install a new lip washer.

3. Press the camshaft bushings in the cam­shaft bore. See insets A and B. Be sure to align the oil holes in the bushings with the holes in the block.

4. Install the camshaft in the engine.

IMPORTANT CAMSHAFT END PLAY IS TAKEN UP BY A SPRING LOADED THRUST BUTTON IN THE END OF THE CAMSHAFT AND ALSO BY A WASHER LOCATED BE­TWEEN THE DRIVE GEAR AND FRONT BEARING. BE SURE BOTH ARE IN PLACE AND IN GOOD CONDITION.

5. When the camshaft is installed, the timing marks must be aligned as shown in Fig­ure M-50.

CHECKING BACKLASH

(Refer to FigureM-50)

/

CAMSHAFT GEAR

DIAL INDICATOR ~CRANKSHAFT GEAR

Figure M-50

If backlash is within specified limits, it will not be necessary to install a new crankshaft gear or injection pump drive gear (if so equipped) when the camshaft gear is replaced.

If backlash is more than specified at the loosest point, replace one or both gears contacting the camshaft gear.

M-40

TABLE OF CONTENTS

GOVERNOR AND THROTTLE LINKAGE ........................ , . ,M-51

General Description .................................... ,M-51

Tools Required ......................................... ,M-51

GOVERNED ENGINE SPEED .................... , ... , , , , , , , , , ,M-52

ADJUSTING GOVERNED ENGINE SPEED .................. , .... , , ,M-53

Adjusting the No Load (High)Idle Speed .......................... M-53

Adjusting the Hand and Foot Throttle Linkage .............. ~ ....... M-54

CHECKING GOVERNOR ACTION ............................... .M-55

Governor Surge (Under No Load) ............................. .M-55

Governor Surge (Under Load) ............................... M-55

Sluggish Governor Action .................................. M-55

Governor Does Not Allow Engine to Reach High Idle ................. M-55

CHECKING GOVERNOR LINKAGE ............................... M-56

SERVICING GOVERNOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-57 thru M-59

Checking Governor Sleeve ................................. ,M-57

Removing and Checking Governor Weights ........................ M-57

Installing Governor Weights ................................ M-58

Checking Governor Lever Assembly ........................... .M-59

IMPORTANT

FOR SERVICE INSTRUCTIONS COVERING THE A377 GASOLINE ENGINE:

1. REFER TO SECTION M FOR ALL ENGINE ASSEMBLY PROCEDURES EXCEPT THE GOVERNOR.

2. REFER TO SECTION M SUPPLEMENT NO. 1 FOR GOVERNOR INSTRUCTIONS.

3. REFER TO SECTION C RAC. FORM 9-75431 FOR SPECIFICATIONS.

M-50

TABLE OF CONTENTS

FUEL INJECTORS ..... .

Description and Operating Principles.

Diesel Tool Kits .............. .

Checking Injector Operation on the Engine

Removing and Installing Injector

Nozzle (Injector) Test Stand.

Test Stand Installation ...

Test Oil Recommendations

Preparing Test Stand for Operation.

Testing Injector ........... .

Setting Injector Opening Pressure

Disassembling, Cleaning, Checking and Reassembling Injector

CASE POWRC EL . . . . .

General Description.

Servicing Powrcel . .

Removing and Installing Powrcel

Cleaning and Checking Powrcel .

Installing Powrcel Body Locating Pin

I-5 thru I-25

1-5 and I-6

I-7

I-8

I-8

I-10

I-11

I-12

. I-13

I-13 thru I-16

...... I-14

. !-17 thru I-25

. ... I-26 thru I-32

. ...... I-26

. I-27 thru I-32

... I-28 thru I-29

.I-30 thru I-31

... I-32

ROBERT BOSCH MODEL PES MULTIPLE PLUNGER(EXTERNAL DRIVE) FUEL INJECTION PUMP . . . . . . -I-33

General Description . . . . . . . . . . . . . . . . . . . . . . .

Removing, Timing and Replacing Fuel Injection Pump

Adjusting the Governed Engine and Idle Speed . . . . . .

I-2

· · · · · · I-33

. I-34 thru I-36

. I-37 thru I-43

TABLE OF CONTENTS

INTRODUCTION ................................. . DISASSEMBLY-INSPECTION-ASSEMBLY OF THE REGULATOR . . DISASSEMBLY-INSPECTION-ASSEMBLY OF THE CARBURETOR. ADJUSTMENTS .................................. .

SAFETY PRECAUTIONS FOR LPG ENGINES

. N-3 N-4 N-6 N-8

When properly handled, LPGfuel presents less opportunity for the occurrance of accidents than is true with gasoline and other fuels. The probability of an accident occurring with LPG fuel is very remote unless vapor is released within a building or confined area by a thought­less person who has completely disregarded the normal precautions that should be observed when handling or storing any combustible fuel.

Emptying LPG Tank

The recommended method for emptying a tank which contains a substantial amount of liquid LPG is tO burn the vapor instead of releasing it directly into the atmosphere.

The burning of the vapor is accomplished by hooking a hose line 20 feet or longer to the filler valve of the tank. Place the end of the hose downwind from the tractor so that there will be no possibility of damage to the tractor.

Prior to attaching the hose line to the filler valve of the tank, place some burning waste at the end of the hose so the escaping vapor will be ignited immediately.

Burning the released vapor in this manner will eliminate any possibility of a dangerous accumulation of vapor forming in a low place.

Filling LPG Tank A, VAPOR SPACE IN TANK. The engine fuel tank should not be filled over 80% full with liquid

LPG. The 20% vapor space remaining will take care of any normal expansion that would result from atmospheric temperature changes. After filling the LPG tank, the full level gauge determines the amount of liquid LPG in the tank.

B. REFUEL THE TANK OUT-OF-DOORS. As a small amount of vapor is released when attach­ing or removing the filler and vapor hoses, the tank should always be refueled out-of-doors in an open area where the released vapor would be quickly dissipated.

C. VAPOR RETURN HOSE. In addition to the fillerhose, a vapor return hose should always be used when filling an LPG tank. The practice of using only a filler hose and then bleeding off vapor pressure from the tractor tank wastes fuel and could also be hazardous if the oper­ator is careless.

D. HANDLING FACILITIES. The main storage tank, filler pump and hose lines should all meet the government safety standards set up for use with LPG fuel.

CAUTION WHEN FILLING THE TANK, CHECKING THE LIQUID LEVEL IN THE TANK OR WHEN

CLEANING THELIQUIDFILTER,BECAREFULNOTTOCOME INTO PROLONGED CONTACT WITH THE LIQUID SPRAY. THE TEMPERATURE OF THE LIQUID SPRAY IS EXTREMELY LOW AND COULD CAUSE FROST-BITE IF IT DIRECTLY CONTACTED BARE HANDS, ARMS OR OTHER PARTS OF THE HUMAN BODY.

N-2

TABLE OF CONTENTS

SERVICING BREAK-AWAY COUPLINGS .............. . . A-2 . A-4 . A-6

SERVICING THE 2-1/2" x 8" HYDRAULIC CYLINDER ..... . SERVICING 3-1/4" x 8" AND 4" x 8" HYDRAULIC CYLINDERt>

SERVICING BREAK-AWAY COUPLINGS

COUPLING SOCKET

(Refer to Figure A-1)

Disassembly

To disassemble the coupling socket, un­screw the socket body (1) from the hose (11) and remove spring (10), piston (9), seal retainer (8) and piston seal (7) from the socket body.

To disassemble the socket body (1) from the locking sleeve (5), remove sleeve lock­ing ring (6), locking balls (2) , sleeve spring (4) and inner "0" ring (3).

Inspection

Thoroughly clean and insect all machined surfaces for nicks, grooves and burrs that may cause improper seating and leakage. Replace any damaged parts.

Check spring (10) for a pressure of 18-1/2 lbs. at compressed height of 1-1/64".

Assembly

To assemble the coupling, install inner "0" ring (3) into the socket body (1); then install the socket body, sleeve spring· (4) and locking balls into locking sleeve (5) ,and retain with sleeve locking ring (6) .

NOTE Replace "0" ring (3) and seal (7) anytime the coupling is disassembled.

Next, assemble piston seal (7) seal re­tainer (8), piston (9) and piston spring (10) into socket body (1), and install the coup­ling socket assembly on hose (11).

COUPLING PLUG

C Refer to Figure A-2)

Disassembly

To disassemble the coupling plug, un­screw plug (1) from hose (7) and remove piston sleeve (8) ,spring (6) "O" ring (5), piston (4), seal retainer (3) and seal (2) from plug (1) .

Inspection

Thoroughly clean and inspect all mach­ined surfaces for nicks, grooves and burrs that may cause improper seating and leakage.

Check spring (6) for a pressure of 18-1/2 lbs. at a compressed height of 1-1/64".

Assembly

To assemble the coupling plug, install seal (2), seal retainer (3), piston (4), "0" ring (5), spring (6) and piston sleeve (8) into plug (1). Then. screw the plug assembly to the hose (7) .

NO TE Replace "0" ring (5) and seal (2), anytime plug is disassembled.

TABLE OF CONTENTS

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3 How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

OIL FLOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4 and D-5 Extending the Piston Rod . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4 Retracting the Piston Rod . . . . . . . . . . . . . . . . . . . . . . . . . . D-5

HYDRAULIC VAL VE AND PUMP (Removal and Installation) · · · · · · · · · · · 0 _6

HYDRAULIC SYSTEM FILTER· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · D-6

DISASSEMBLY AND INSPECTION OF PUMP ......... · , · · · · · · · · · · D-8

ASSEMBLY OF PUMP ............... , · · · · · · · · · · · · · · · · · · · · D-10

DISASSEMBLY OF CONTROL VALVE ............. · · · · · · · · · · · · · D-12

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-14 and D-17

ASSEMBLY OF CONTROL VAL VE .......... · .. · · · · · · · · · · · · · · · D-18

SPEED REGULATOR VAL VE .................. · · · · · · · · · • · · · · D-20

CHECKING HYDRAULIC PRESSURE .......... , ... · · · · · · · · · · · · · D-22

o.

D-2

TABLE OF CONTENTS

FRONT WHEEL BEARINGS AND SEALS .......... .

FRONT AXLES ......... .

0-3

0-4

STEERING GEAR (930) ..... . ............... 0-5 thru 0-7

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-6 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-6

STEERING GEAR (930 Comfort King) .................. · · . 0-8 thru 0-11

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-8 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-8 Assembly ........................................... 0-10

COMBINED POWER STEERING CYLINDER AND VALVE (Monroe) .0-12 thru 0-17

Removal and Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-12 Inspection and Assembly .................................. 0-14 Adjustment and Installation of the Cylinder ............... 0-16 thru 0-17

COMBINED POWER STEERING CYLINDER AND VALVE (ROSS) ... 0-18 thru 0-23

Removal and Installation. . . . . . . . . . . . . . . . . . . . ·. . . . . . . . . . . . . 0-18 Disassembly and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . 0-20 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-22

DRAG LINK AND TOE-IN ADJUSTMENT·· · · · · · · · · .... · · · , , · 0-24

FRONT WHEEL TURNING ANGLE ..

BLEEDING THE STEERING SYSTEM

0-2

. . . . . . . . . . . . . . . . . " . . . - .

. . . . ·- . . . . . . . . . . . . " . . ~ . . 0-26

0-27

TABLE OF CONTENTS

INTRODUCTION AND IDENTIFICATION OF POWER STEERING PUMPS ..................................•.• P-3

POWER STEERING PUMP OPERATION ...•................••...... P-4 thru P-5

OIL FLOW .....•................••....................... P-4 thru P-7

RELIEF VALVE PRESSURE CHECK . . • • ............................. P-8

POWER STEERING PUMP DRIVE BELT . , .•.....................•.... P-9

POWER STEERING SYSTEM CAPACITIES . . . . ......................... P-9

POWER STEERING PUMP FILTER ELEMENT AND RESERVOIR ....•........ P-9

GEAR TYPE STEERING PUMP ••..•........................... P-10 thru P-15

Flow Control and Relief Valve .............•.....•........ P-10 and P-11

Disassembly of Gear Type Pump . . . . . . . • . . . . . • . . . . . . . . . . .P-12 and P-13

Assembly of Gear Type Pump .....•........•........... P-14 and P-15

ROLL TYPE STEERING PUMP ................................ P-16 thru P-21

Flow Control and Relief Valve ...............••.•........ P-16 and P-17

Disassembly of Roll Type Pump . · • . ....•........•....•.•.. P-18 and P-19

Assembly of Roll Type Pump .•.......................... P-20 and P-21

FILLING AND BLEEDING THE POWER STEERING SYSTEM .............•.... P-22

SERVICE SUGGESTIONS .••......•.......................•....... P-23

P-2

TABLE OF CONTENTS

INTRODUCTION ......................................... 8-2 HOW IT WORKS · · , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 PARTS REMOVED PRIOR TO TRANSMISSION SERVICE . .............. 8-4 SPLITTING THE TRACTOR. . . . . . . . . . . . . . . 8-4 TRANSMISSION TOP COVER AND GEAR SHIFT . 8-6 GEAR SHIFTER ASSEMBLIES . . . . 8-10 SHIFTING SEQUENCE . . . . . . . . . . . . . . . . . 8-14 SHAFT REMOVAL SEQ.DENCE. . . . . . . . . . . . . . 8-16 POWER TAKE-OFF DRIVE SHAFT. . . . . . . . . . . .8-18 SLIDING GEAR SHAFT . . . . . . . . . . . . . . . . . . . . . . . 8-20 TRACTION CLUTCH SHAFT AND PTO DRIVE SLEEVE AND

GEAR ASSEMBLY . .............. . FIRST REDUCTION GEAR SHAFT ..... . REVERSE IDLER GEAR ASSEMBLY .... . DIFFERENTIAL GEAR SHAFT ASSEMBLY CHAINS, SPROCKETS AND REAR AXLES TRANSMISSION ADJUSTMENTS TRANSMISSION LUBRICATION ...... . DIFFERENTIAL BRAKES . . . . . . . . . . .

8-24 8-28 8-32 8-36 8-40 8-42 8-43 8-44

INTRODUCTION

This transmission is a six-speed forward, one - speed reverse, spur gear mechanical unit. It is housed with the final drive unit in a heavy duty, one-piece case, which is attach­ed directly to the engine block and supports the operator's platform, fuel tank and oper­ating controls. This design eliminates the need for a separate tractor frame.

Gear cross shafts are heavy, short shafts, especially processed to reduce scoring and distortion and to lengthen the life of the transmission.

All gears are precisely machined to in­sure correct tooth contact and long life. The clutch shaft and first reduction shaft bevel

S-2

gears are machined as a matched set for uniform tooth contact. The heavy duty dif­ferential drive gear "floats" on the differ­ential cross shaft. This floating action is the result of four differential pinion gears integrally mounted with the drive gear. These pinion gears mesh with differential side gears to transmit power to the chain drive sprockets. This "floating" action pro­vides smooth operation and greater service life for the cross shaft, differential drive gear and for the differential side gear and sprocket assemblies.

The rear axle chain sprockets also are machined precisely to insure correct tooth contact with the reliable, heavy duty roller chain.

·-

TABLE OF CONTENTS

SPECIAL TOOLS .......................................... SS-2

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-3

HAND CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-4

Removal of the Hand Clutch Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-4

Removal and Disassembly of the Hand Clutch . . . . . . . . . . . . . . . . . . . . . SS-4

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-4

HAND CLUTCH .......................................... SS-6

Assembly and Installation of the Hand Clutch ..................... SS-6

Installatiori of the Clutch Linkage ............................. SS-6

TRACTION HAND CLUTCH AND TRANSMISSION BRAKE ADJUSTMENT .... SS-8

Hand Clutch Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-8

Transmission Brake Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-8

FOOT CLUTCH .......................................... SS-10

Removal of the Foot Clutch Linkage .......................... ·SS-10

Removal and Disassembly of the Foot Clutch .................... ss-10

Inspection ..

FOOT CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS-10

SS-12

Assembly and Installation of the Foot Clutch .................... ss-12

Installation of the Foot Clutch Linkage ........................ ss-12

Release Lever Adjustment ................................ ss-12

TRACTION FOOT CLUTCH AND TRANSMISSION BRAKE ADJUSTMENT ... SS-14

Traction Foot Clutch Adjustment

Transmission Brake Adjustment

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPECIAL TOOLS

SS-14

SS-14

The only special tool required is A27703 clutch adjusting wrench. This tool is included as standard equipment with each tractor.

SS-2

TABLE OF CONTENTS

INTRODUCTION ........................................ 3S-3

How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3S-3

REMOVAL AND DISASSEMBLY OF THE PTO CLUTCH .............. 3S-4

ASSEMBLY AND INSTALLATION· · · · · · · · . · · · · , · .............. 3S-6

REMOVAL AND DISASSEMBLY OF THE CLUTCH DRUM ............. 3S-8

ASSEMBLY 'AND INSTALLATION · · · · · · · · · · · · · · · , , , .. , , , .. , , , 3S-10

PTO CLUTCH ADJUSTMENT· · · · · · · · · · · · · · · · · · , , , , .. , . , . , , , 3S-12

3S-2