John Deere 4320 Tractor Service Manual - Jensalesare not responsible for the quality or accuracy of this manual. trade marks and trade names contained and used herein are those of

John Deere

MODEL:

4320 Tractor

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-TM1029

4320 Tractor

TECHNICAL MANUAL 4320

Tractor

TM1029 (01 DEC74) English

John Deere Tractor Works TM1029 (01DEC74)

LITHO IN U.S.A.

ENGLISH

CONTENTS

SECTION 10 - GENERAL Group 5 - Specifications Group 10 - Predel ivery, Delivery, and After-Sale Services Group 15 - Tune-Up Group 20 - Lubrication Group 25 - Separation

SECTION 20 - ENGINE Group 5 - General Information, Diagnosis, and Tests Group 10 - Cylinder Head, Valve Train, and Camshaft Group 15 - Cylinder Block, Liners, Pistons, and Rods Group 20 - Crankshaft, Main Bearings, and Flywheel Group 25 - Lubrication System Group 30 - Cooling System

SECTION 30 - FUEL SYSTEM Group 5 - Diagnosing Malfunctions Group 10 - Fuel I njection System Group 15 - Air I ntake System

SECTION 40 - ELECTRICAL SYSTEM Group 5 - Information and Wiring Diagrams Group 10 - Charging Circuit Group 15 - Starting Circuit Group 20 - Lighting and Accessory Circuits

SECTION 50 - POWER TRAI N Group 5 Group 10 -Group 15 -Group 20 -Group 25 -Group 30 -

Syncro-Range Transmission and PTO Clutches Syncro-Range Transmission Differential Final Drive PTO Power Front-Wheel Drive

SECTION 60 - STEERING AND BRAKES Group 5 - General Information

SECTION 70 - HYDRAULIC SYSTEM Group 5 - General I nformation, Diagnosis, and Tests Group 10 - Main Reservoir, Filters, Valves, Oil Cooler, and Oil Reservoir Group 15 - Hydraulic Pumps Group 20 - Power Steering Group 25 - Power Brakes Group 30 - Rockshaft and I mplement Hitches

1

4320 TRACTOR TECHNICAL MANUAL

TM-1029 (Aug-70)

Group 35 - Selective Control Valve, Breakaway Couplers, and Remote Cylinders

SECTION 80 - MISCELLANEOUS Group 5 - Conventional Front Axle Group 10 - Power Front Wheel Drive Axle

Litho in U.S.A.

Tractors - 4320 TM-1029 (Aug-70)

General 10 -Specifications 5-1

Section 10

GENERAL

CONTENTS OF THIS SECTION

Page Page

GROUP 5 - SPECIFICATIONS GROUP 20 - LUBRICATION (ConL) General Tractor Specifications ............. 5-1 Greases .............................. 20-2

GROUP 10 - PREDELIVERY, DELIVERY, Storing Lubricants ...................... 20-2

AND AFTER-SALE SERVICES GROUP 25 - SEPARATION Predel ivery Services .................. " 10-1 Removing Roll-Gard Cab ................ 25-1 Delivery Services ...................... 10-3 Installing Roll-Gard Cab ................. 25-2 After-Sale Services ................... " 10-4 Separating Engine from Clutch

GROUP 15 - TUNE-UP Preliminary Engine Testing ............... 15-1 Engine Tune-Up ....................... 15-1 Final Engine Test ...................... 15-3 Tractor Tune-Up ....................... 15-3

Housing ............................ 25-2 Separating Clutch Housing from

Syncro-Range transmission ., .......... 25-4 Removing Engine ...................... 25-5 Separating Engine from Front End ......... 25-6 Removing Final Drive Assembly ........... 25-7

GROUP 20 - LUBRICATION Specifications ......................... 25-8 Lubrication Chart ...................... 20-1 Torques for Hardware ................... 25-8 Engine Lubricating Oils .................. 20-2 Special Tools .......................... 25-8 Transmission-Hydraulic Oil .............. 20-2

Group 5 GENERAL TRACTOR SPECIFICATIONS

HORSEPOWER: Observed at PTO ........................ 115

ENGINE: Type ......... 6-cylinder, in-line, valve-in-head,

diesel, turbocharged Bore and stroke ........... 4-114 in. x 4-314 in. Displacement ................... , 404 cu. in. Compression ratio ................... 15.7 to 1 Firing order . . . . . . . . . . . . . . . . . . . .. 1-5-3-6-2-4 Valve clearance .............. Intake-0.018 in.

Exhaust-0.022 in. I njection pump timing ................... TDC Engine Speeds:

Working range ............ 1500 to 2200 rpm Maximum transport speed ......... 2500 rpm Engine speeds:

Slow idle ...................... 800 rpm 1900 rpm load .............. 2150 rpm idle 2200 rpm load .............. 2400 rpm idle 2500 rpm load .............. 2650 rpm idle

LUBRICATION SYSTEM: Full pressurized

Litho in U.S.A.

with full-flow micronic oil filter, water cooled oil

cooler, and bypass valves for filter and cooler.

FUEL SYSTEM: Type ....................... Direct injection Filter ............. Two-stage with replaceable

impregnated paper element. I njection pump type ............ I nlet metering,

distributing type Air cleaner .. Dry type with safety element

COOLI NG SYSTEM: Type ........ Pressurized with centrifugal pump Temperature control . . . . . . . . . . . . .. Heavy-duty

thermostat

CAPACITI ES: Fuel tank ..................... , 44 U.S. gals. Cooling system ................ " 28 U.S. qts. Crankcase (with filter change) ...... 16 U.S. qts. Transmission-hydraulic system (add 4-1/2 gals. to capacity if equipped with Power Front Wheel Drive) .................. , 14 U.S. gals.

TRANSMISSION: Type ........... Syncro-Range, constant mesh Clutch ............ Heavy-duty, 13-1/2 in. plate,

foot operated Gear selections ......... 8 forward and 2 reverse Shifting .............. 4 stations, synchronized

forward shifting within stations

Tractors - 4320 TM-1029 (Aug-70)

Fig. 11-Thrust Washer in Position

Mesh the PTa and transmission drive when joining the tractor. Tighten all cap screws and remove sup­port stands.

Install PTa shaft front bearing quill. Pour oil in transmission and install transmission cover.

Connect hydraulic oil pressure pipe to rockshaft housing.

Connect differential lock control link.

Connect brake return pipe and right- and left-hand brake pipes.

Connect shifter rods. Tap arms inward to obtain specified end play.

Connect wiring harness and install battery cable clamps.

Install oil temperature sensing bulb. Connect main hydraulic pump inlet pipe and steering return pipe.

I nstall platform and differential lock pedal pivot pin. Connect clutch pedal return spring.

Connect Power Front-Wheel Drive drain pipe (Fig. 7) .

I nstall battery box supports. I nstall battery boxes and connect batteries. Make ground connection last and tap cable on battery post first.

Litho in U.S.A.

General 10 Separation 25-5

Bleed brakes (Section 70, Group 25) and recheck transmission oil level.

REMOVING ENGINE

Separate tractor between engine and clutch hous­ing as previously instructed.

Fig. 12-Right-Hand Side ot Engine

Fig. 13-Lett-Hand Side of Engine

1. Remove the turbocharger air intake pipe and vertical support strap. Remove the water pump by­pass pipe.

2. Disconnect wiring harness from the fuel shut-off solenoid, alternator, starter solenoid, and the oil pres­sure switch. Place wiring harness out of the way for engine removal.

3. Close fuel tank shut-off valve and disconnect fuel pump inlet pipe. Disconnect diesel fuel leak-off pipe.

Tractors - 4320 TM-1029 (Dec-74).

Basic Engine 20 General Information and Diagnosis 5-1

Section 20 ENGINE

CONTENTS OF THIS SECTION

Page

GROUP 5 - GENERAL INFORMATION AND DIAGNOSIS

General Information ........................ 5-2 Diagnosis .................................. 5-2 Engine Break-In ............................ 5-4

GROUP 10 - CYLINDER HEAD, VALVES AND CAMSHAFT

General Information ...................... 10-1 Diagnosing Malfunctions .................. 10-1 Cylinder Head and Valves

Removal and Repair . . . . . . . . . . . . . . . . . .. 10-2 Assembly and Installation ............... 10-4

Camshaft Removal .............................. 10-4 Repair and Installation.................. 10-5

Specifications .. . . . . . . . . . . . . . . . . . . . . . . . . .. 10-5

GROUP 15 - CYLINDER BLOCK, LINERS, PISTONS AND RODS

General Information ...................... 15-1 Diagnosing Malfunctions .................. 15-1 Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-2 Repair

Pistons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-2 Rods .................................. 15-3 Liners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-3 Block ................................. 15-4

Assembly ................................ 15-4 Installation ............................... 15-4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-5

GROUP 20 - CRANKSHAFT, MAIN BEARINGS, AND FLYWHEEL

General Information ...................... 20-1 Diagnosing Malfunctions .................. 20-1 Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-1

Litho in U. S.A.

Page

Inspection and Repair Crankshaft and Flywheel ............... 20-1 Main Bearings ......................... 20-2 Damper Pulley. . . . . . . . . . . . . . . . . . . . . . . .. 20-2 Rear Crankshaft Oil Seal, Housing,

Wear Sleeve . . . . . . . . . . . . . . . . . . . . . . ... 20-3 Front Oil Seal and Wear Sleeve ........ 20-3

Assembly Main Bearings . . . . . . . . . . . . . . . . . . . . . . . .. 20-2 Rear Oil Seal, Wear Sleeve,

and Housing ........................ 20-3 Front Oil Seal and Wear Sleeve . . . . . . .. 20-3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-4 Specifications .. . . . . . . . . . . . . . . . . . . . . . . . . .. 20-5

GROUP 25 - LUBRICATION SYSTEM General Information ...................... 25-1 System Testing .......................... 25-1 Diagnosing Malfunctions .................. 25-2 Oil Pump

Removal and Repair . . . . . . . . . . . . . . . . . .. 25-2 Assembly and Installation ............... 25-3

Oil Filter Inspection and Repair ........... 25-3 Oil Regulating Valves Inspection

and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25-3 Oil Cooler Inspection and Repair .......... 25-3 Oil Cooler Installation ..................... 25-4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25-4

GROUP 30 - COOLING SYSTEM General Information ...................... 30-1 Radiator and Fan Inspection and

Repair ................................ 30-1 Water Pump

Removal .............................. 30-1 Disassembly and Inspection ............. 30-2 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 30-2 Installation ............................. 30-3

Water Manifold and Thermostat ........... 30-3 Specifications ............................ 30-4

Tractors - 4320 TM-1029 (Aug-70)

Fuel System 30 Diagnosing Malfunctions 5-1

Section 30

FUEL SYSTEM CONTENTS OF THIS SECTION

Page

GROUP 5 - DIAGNOSING MALFUNC-TIONS ..................... , 5-1

GROUP 10 - FUEL INJECTION SYSTEM Fuel Tank ............................ 10-1 Fuel Pump. . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-1 Fuel Filter. . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-1 Fuel I njection Pump

General Information ..... . . . . . . . . . . . .. 10-1 Removal ........................... 10-1 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-1 Installation ......................... 10-1 Adjustments ........................ 10-2

Page

Fuel I njection Nozzles .................. 10-3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 10-4 Special Tools. . . . . . . . . . . . . . . . . . . . . . . . .. 10-4

GROUP 15 - AIR INTAKE SYSTEM Air Cleaner ........................... 15-1 Turbocharger

General Information ..... . . . . . . . . . . . . . 15-1 Diagnosis .......................... 15-2 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 15-5 Special Tools. . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

Group 5

DIAGNOSING MALFUNCTIONS GENERAL INFORMATION

The following is a guide for diagnosing fuel system malfunctions. For specific diagnosis of fuel system components, refer to the groups which cover com­plete servicing.

Fuel Not Reaching Injection Nozzles

Filter clogged. Fuel line clogged or restricted. Electrical shut-off does not work. Fuel too heavy at low temperatures. Low transfer pump pressure. High pump housing pressure. Throttle not in correct position. Air in system. Fuel tank valve shut off. Return line restricted.

Engine Starts Hard or Won't Start

Air leak on suction side of system. Fuel too heavy at low temperatures. Injection nozzles faulty or sticking. Incorrect timing. Automatic advance is faulty or not

operating. Water in fuel. Filte~ clogged.

Litho in U.S.A.

Injection pump return fuel line or fittings restricted.

Low cetane fuel.

Engine Starts and Stops

Electrical shut-off does not work. Air leak on suction side of system. Filter clogged. Fuel lines clogged or restricted. Water in fuel. Injection pump return fuel line or fittings

restricted. Key switch corroded.

Erratic Engine Operation

Filter clogged. One or more connector screws obstructed. Air leak on suction side of system. Fuel too heavy at low temperatures. I njection nozzles faulty or sticking. Fuel lines clogged or restricted. I ncorrect timing. Automatic advance faulty or not-ep.erating. Water in fuel. Injection pump return fuel line or fiWflgs

restricted. Low cetane fuel. I njection nozzle return lines cloQg~d.

Tractors - 4320 TM-1029 (Dec-74)

Electrical System 40 Information and Diagrams 5-1

Section 40 ELECTRICAL SYSTEM

CONTENTS OF THIS SECTION

Page

GROUP 5 - INFORMATION AND DIAGRAMS

General Information ........................ 5-2 Circuit Breakers ............................ 5-3 Fuse ...................................... 5-3 Key Switch ................................ 5-3 Harness Replacement ...................... 5-3 Wiring Diagrams ........................... 5-3 Battery Connections ........ : . . . . . . . . . . . .. 5-13 Power Front-Wheel Drive ................. 5-13 Electrical Remote Control . . . . . . . . . . . . . . . .. 5-14 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-16

GROUP 10 - MOTOROLA CHARGING CIRCUIT

General Information ...................... 10-1 Diagnosis and Tests. . . . . . . . . . . . . . . . . . . . .. 10-1 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-3 Slip Ring Bearing ........................ 10-3 Drive End Bearing ....................... 10-4 Rotor .................................... 10-5 Brushes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-6 Diodes .............................. . . .. 10-6 Stator ................................... 10-6 Assembly ................................ 10-6 Tests After Assembly. . . . . . . . . . . . . . . . . . . .. 10-7 Installation ............................... 10-8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-8

GROUP 12 - DELCOTRON CHARGING CIRCUIT

General Information ...................... 12-1 Diagnosis and Tests. . . . . . . . . . . . . . . . . . . . .. 12-3 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12-3 Drive End Bearing ....................... 12-3 Slip Ring Bearing . . . . . . . . . . . . . . . . . . . . . . .. 12-4 Diode Trio ............................... 12-4 Rectifier Bridge .......................... 12-5 Brush Assembly and Regulator............ 12-5 Rotor .................................... 12-5 Stator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12-5 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12-6 Tests After Assembly. . . . . . . . . . . . . . . . . . . .. 12-6 Installation ............................... 12-6 Specifications 12-7

Litho in U. S.A.

Page GROUP 15 - DELCO-REMY STARTING

CIRCUIT General Information . . . . . . . . . 15-1 Start-Safety Switch Adjustment . . . . . .. 15-1 Diagnosis and Tests. . . . . . . . . . . . . . . . . . . 15-1 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-3 Solenoid Switch.......................... 15-4 Overrunning Clutch Drive . . . . . . . . .. . . . . . .. 15-4 Bushings ................................ 15-4 Armature ................................ 15-4 Field Coils............................... 15-4 Brushes ................................. 15-4 Assembly ................................ 15-4 Pinion Clearance..... . . . . . . . . . . . . . . . . . . .. 15-5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 15-5

GROUP 17 - JOHN DEERE STARTING CIRCUIT

General Information ................... 17-1 Diagnosis and Tests ...................... 17-1 Start-Safety Switch Adjustment. . . . . . . . . . .. 17-2 Repair ................................... 17-2 Bushings ................................ 17-4 Armature ................................ 17-4 Overrunning Clutch Drive ................. 17-4 Field Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17-4 Brushes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17-4 Solenoid ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17-5 Assembly ................................ 17-5 Installation ............................... 17-5 Specifications ............................ 17-6

GROUP 20 - LIGHTING AND ACCESSORY CIRCUITS

Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-1 Instrument Lighting ....................... 20-1 Diagnosis and Tests ...................... 20-1 Light Switch ............................. 20-2 Light Adjustment ......................... 20-2 Accessories and Instruments .............. 20-2 Fuel Gauge .............................. 20-2 Injection Pump Solenoid . . . . . . . . . . . . . . . . .. 20-2 Horn .................................... 2~3 Heating and Air Conditioning

Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-3 Additional Accessories .................... 20-3 Specifications ............................ 20-4

Tractors - 4320 TM-1029 (Oec-74)

Power Train 50 Clutches for Syncro-Range Transmission and PTO 5-1

Section 50

POWER TRAIN CONTENTS OF THIS SECTION

GROUP 5 - CLUTCHES FOR SYNCRO­RANGE TRANSMISSION AND PTO

Page

General Information '" . Diagnosing Malfunctions . Shafts and Controls

. .... 5-1

Removal ..... Repair Adjustment ..

Clutch Assembly

. ........ 5-1

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

. ......... 5-6

Removal . . . . . . . ............... 5-8 Repair. . . . . . . . . . .. ........... . ........ 5-8 Installation ............................... 5-9

Specifications ............................ 5-10 Special Tools. . . . . . . . . . . . . . . . . . . . . . ... 5-11

GROUP 10 - SYNCRO-RANGE TRANSMISSION

General Information .......... . . . . . 10-1 Diagnosing Malfunction . . . . . . . . . . . . . . . . . .. 10-4 Removal ................................ 10-4 Repair .................................. 10-6 Installation ............................... 10-8 Adjustment ........ . . . . . . . . . . . . . . . . . . . .. 10-10 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . .. 10-10 Special Tools. . . . . . . . . . . . . . . . . . . . 10-11

GROUP 15 - DIFFERENTIAL General Information ..................... . Removal ................. " ............ .

15-1 15-1

Repair .......... . Adjustment and Testing Specifications. . . . . . . . . .. . ........ .

GROUP 20 - FINAL DRIVE Removal Repair ................... . Installation. Specifications .............. . Special Tools ..

GROUP 25 - SYNCRO-RANGE PTO

Page

15-1 15-3 15-4

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

.. 20-2

General Information . . . . . . . . . . . . . . . . . . 25-1 Diagnosing Malfunction . . . . . . . . . . . . . . . . . 25-1 Removal ................................ 25-1 Repair .............................. . Specifications .......................... .

GROUP 30 - POWER FRONT-WHEEL DRIVE

25-1 25-4

General Information . . . . . . . . . . . . . . . . . . . 30-1 Diagnosing Malfunction ................... 30-8 Testing .................................. 30-9 Removal ................................ 30-9 Inspection and Repair ................... 30-10 Assembly ............................... 30-16 Control Valve .......................... ' 30-19 Adjustments ............................ 30-20 Specifications ........................... 30-21

Group 5 CLUTCHES FOR SYNCRO .. RANGE TRANSMISSION

AND PTO GENERAL INFORMATION

The transmission and PTO clutch assemblies con­sist of two spring-loaded dry-disk clutches mounted in tandem. The front clutch supplies engine power to the transmission and the rear clutch supplies engine power to the PTO. The clutches operate independent­ly of each other.

The transmission clutch is manually controlled by a pedal, and the PTO clutch is controlled by oil pressure from the main hydraulic system.

Litho in U.S.A.

DIAGNOSING CLUTCH MALFUNCTIONS

Clutch Slips

Worn, glazed or burned clutch facings. Oil or grease on clutch facings. Insufficient or zero transmission clutch

pedal free travel. Release levers out of adjustment. Operator riding clutch pedal. Insufficient pressure on PTO clutch. Clutch facing replaced with wrong material.

50 Power Train 30-16 Power Front- Wheel Drive

ASSEMBLY

Pivot Pin Assembly

Place wheel motor housing into place in axle knee. Position two thrust washers with tabs on top and bot­tom between axle knee and motor housing (Fig. 23). Outer thrust washer tab should be away from center of wheel and inner should be toward center of wheel.

Install pivot pin into axle knee with holes in pivot pin lining up with holes in axle knee. Install cap with pressure oil tube into pivot pin and tighten cap screws to 35 ft-Ibs torque.

Install bleed oil tube into cap and tighten securely.

Fig. 24-Measuring for Shim Requirement

Adjust bearings before installing seal.

Install inner bearing, front wheel hub and outer bearing. Bolt a three-pound weight at about 2 o'clock on the outside edge of the front wheel hub (Fig. 24). Use one of the cap screw holes to attach the weight. The weight will cause the hub to rotate until the weight comes to rest at the 6 o'clock position.

Litho in U.S.A.

Tractors - 4320 TM-1029 (Dec-74)

Next, bolt two pieces of strap iron, approximately six inches long, to the front of the motor housing (Fig. 24). Place a washer under each end of the straps, being sure the washers contact only the edge of the bearing and not the motor housing.

Tighten both strap bolts only until the washers are lightly held in place.

Move the weight to the 2 o'clock position and re­lease. Tighten one cap screw slightly. Move the weight back to the 2 o'clock position and release. Tighten cap screw slightly again. Repeat these two steps until the weight fails to turn the wheel hub. Mark the cap screw and back off 112 turn.

Repeat the same steps for the other cap screw. When the weight is held in a fixed position by the second cap screw, retighten the marked (first) cap screw the same amount it was backed off.

Fig. 25-Positioning Straightedge

Now lay a straightedge across the motor housing and outside bearing and use a feeler gauge to mea­sure between the straightedge and outside bearing to determine the preload or end play (Fig. 25).

Tractors - 4320 TM-1029 (Dec-74).

Hydraulic System 70 General Information, Diagnosis, and Tests 5-1

Section 70

HYDRAULIC SYSTEM CONTENTS OF THIS SECTION

Page

GROUP 5 - GENERAL INFORMATION, DIAGNOSIS AND TESTS

General Information ........................ 5-3 General Hydraulic System Testing ........... 5-3 Leakage Check ............................ 5-3 Time Cycle Check ......................... 5-4 Hydraulic Tests

Transmission Pump ...................... 5-4 Main Hydraulic Pump .................... 5-4 Rockshaft ............................... 5-5 Selective Control Valve ................... 5-6

Pressure Tests ............................. 5-6 Diagnosis Malfunctions ...................... 5-7 Specifications .............................. 5-7

GROUP 10 - MAIN RESERVOIR, VALVES, OIL COOLER, AND OIL RESERVOIR

Reservoir and Filters . . . . . . . . . . . . . . . . . . . .. 10-1 Hydraulic Oil Relief and Check Valves

Operation .............................. 10-1 Removal and Repair . . . . . . . . . . . . . . . . . .. 10-2

Pressure Control Valve . . . . . . . . . . . . . . . . . .. 10-2 Oil Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1 0-4 Oil Reservoir (Tank) ...................... 10-4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-5

GROUP 15 - HYDRAULIC PUMPS Transmission Pump ...................... 15-1 Main Hydraulic Pump

General Information .................... 15-2 Diagnosing Malfunctions . . . . . . . . . . . . . . .. 15-2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-3 Removal .............................. 15-4 Inspection and Repair.. . . . . . . . . . . . . . . .. 15-4 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-5 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-7

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15-8

Litho in U.S.A.

Page GROUP 20 - POWER STEERING

General Information ...................... 20-1 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-2 Diagnosis and Tests ...................... 20-4 Steering Valve ........................... 20-8 Steering Motor . . . . . . . . . . . . . . . . . . . . . . . . .. 20-12 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .. 20-14

GROUP 25 - POWER BRAKES General Information and Operation ........ 25-1 Cylinder, Plates and Disks ................ 25-3 Brake Valve ............................. 25-3 Brake Accumulator . . . . . . . . . . . . . . . . . . . . . .. 25-6 Bleeding Brakes .......................... 25-7 Pedal Adjustment ........................ 25-7 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25-8

GROUP 30 - ROCKS HAFT AND IMPLEMENT HITCHES

General Information ...................... 30-1 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 30-2 Diagnosing Malfunctions .................. 30-4 Rockshaft Housing Assembly.. . . . . . . . . . . .. 30-5 Rockshaft Valve Assembly... . . . . . . . . . . . .. 30-7 Load Control Arm and Shaft... . . . . . . . . .. 30-10 Rockshaft Control Linkage . . . . . . . . . . . . . .. 30-11 3-Point /:iitch and Quik-Coupler ... . . . . . .. 30-14 Power Weight Transfer Hitch... . . . . . . . . .. 30-16 Specifications ... . . . . . . . . . . . . . . . . . . . . . . .. 30-19

GROUP 35 - SELECTIVE CONTROL VALVE, BREAKAWAY COUPLER AND REMOTE CYLINDER

General Information ...................... 35-1 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 35-2 Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 35-4 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 35-4 Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 35-5 Inspection and Repair . . . . . . . . . . . . . . . . . . .. 35-6 Assembly ................................ 35-7 Adjustment .............................. , 35-8 Remote Cylinder . . . . . . . . . . . . . . . . . . . . . . . . 35-11 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .. 35-13

Tractors - 4320 TM-1029 (Aug-70)

Miscellaneous 80 Conventional Front Axle 5-1

Section 80

MISCELLANEOUS

CONTENTS OF THIS SECTION

Page

GROUP 5 - CONVENTIONAL FRONT AXLE

General Information ..................... 5-2 Removal .............................. 5-2 Repair ................................ 5-2 Installation ............................ 5-2 Specifications .......................... 5-3 Torques for Hardware .................... 5-3 Special Tool ........................... 5-3

Page

GROUP 10 - POWER FRONT-WHEEL DRIVE AXLE

General Information . . . . . . . . . . . . . . . . . . .. 10-1 Removal ............................. 10-1 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 Installation ........................... 10-2 Specifications . . . . . . . . . . . . . . . . . . . . . . . .. 10-2 Torques for Hardware. . . . . . . . . . . . . . . . . .. 10-2 Special Tool .......................... 10-2

Group 5

CONVENTIONAL FRONT AXLE

14 __ ~13

~~ I i 15~

R 17071

Litho in U.S.A.

1-Cap Screw 2-Cap Screw 3-Axle Pivot Bracket 4-Grease Fitting 5-Pivot Pin

14 g 6-Bushing 7-Front Axle B-Special Washer 9-Knuckle Dust Excluder

10-Knuckle

11-Spring Pin 12-Thrust Washer 13-Dowel Pin 14-Pivot Pin Clamp 15-Cap Screw and Washer

Fig. 1-Exploded View of Front Axle Assembly (Fixed Tread)