John Deere Tractors Ultimate Series X740 X744 X748 & X749 Technical Manual – PDF DOWNLOAD

Description

John Deere Tractors Ultimate Series X740 X744 X748 & X749 Technical Manual – PDF DOWNLOAD

DESCRIPTION:

John Deere Tractors Ultimate Series X740 X744 X748 & X749 Technical Manual – PDF DOWNLOAD

Introduction
Manual Description
This technical manual is written for an experienced technician and contains sections that are specifically for this product. It is a part of a total product support program. The manual is organized so that all the information on a particular system is kept together. The order of grouping is as follows:
• Table of Contents
• Specifications and Information
• Identification Numbers
• Tools and Materials
• Component Location
• Schematics and Harnesses
• Theory of Operation
• Operation and Diagnostics
• Diagnostics
• Tests and Adjustments
• Repair
• Other

TABLE OF CONTENTS:

John Deere Tractors Ultimate Series X740 X744 X748 & X749 Technical Manual – PDF DOWNLOAD

TM2350 John Deere Select Series X740, X744, X748, and X749…………………………….. 1
Safety……………………………………………………………………….. 5
Recognize Safety Information………………………………………………… 5
Understand Signal Words…………………………………………………….. 5
Special Messages…………………………………………………………… 5
Replace Safety Signs……………………………………………………….. 5
Handle Fluids Safely – Avoid Fires…………………………………………… 5
Use Care In Handling and Servicing Batteries………………………………….. 6
Wear Protective Clothing……………………………………………………. 6
Use Care Around High-pressure Fluid Lines…………………………………….. 6
Parking Safely…………………………………………………………….. 7
Service Machines Safely…………………………………………………….. 7
Service Cooling System Safely……………………………………………….. 7
Use Proper Tools…………………………………………………………… 7
Work in Clean Area…………………………………………………………. 7
Support Machine Properly and Use Proper Lifting Equipment………………………. 7
Using High Pressure Washers…………………………………………………. 8
Illuminate Work Area Safely…………………………………………………. 8
Work In Ventilated Area…………………………………………………….. 8
Warning: California Proposition 65 Warning……………………………………. 8
Remove Paint Before Welding or Heating……………………………………….. 8
Avoid Harmful Asbestos Dust…………………………………………………. 8
Service Tires Safely……………………………………………………….. 8
Avoid Injury From Rotating Blades and Augers………………………………….. 9
Handle Chemical Products Safely……………………………………………… 9
Dispose of Waste Properly…………………………………………………… 9
Live with Safety…………………………………………………………… 9
Specifications and Information………………………………………………….. 11
Table of Contents………………………………………………………….. 11
Fastener Torques…………………………………………………………… 13
Metric Fastener Torque Values……………………………………………. 13
Inch Fastener Torque Values……………………………………………… 14
Metric Fastener Torque Value – Grade 7 (Special)…………………………… 15
O-Ring Seal Service Recommendations………………………………………….. 16
Face Seals With Inch Stud Ends Torque…………………………………….. 16
Face Seals With Metric Stud Ends Torque…………………………………… 17
O-Ring Seal Service Recommendations………………………………………….. 18
O-Ring Face Seal Fittings……………………………………………….. 18
O-Ring Boss Fittings……………………………………………………. 18
Straight Fitting or Special Nut Torques…………………………………… 18
General Information………………………………………………………… 19
Diesel Fuel……………………………………………………………. 19
Diesel Fuel Lubricity…………………………………………………… 19
Diesel Fuel Storage…………………………………………………….. 19
Diesel Engine Oil………………………………………………………. 19
Break-In Engine Oil – Diesel…………………………………………….. 20
Hydrostatic Transmission and Hydraulic Oil………………………………… 20
Gear Case Oil………………………………………………………….. 21
Gear Transmission Grease………………………………………………… 21
Alternative Lubricants………………………………………………….. 21
Synthetic Lubricants……………………………………………………. 21
Anti-Corrosion Grease…………………………………………………… 21
Mower Spindle Grease……………………………………………………. 21
Lubricant Storage………………………………………………………. 22
Mixing of Lubricants……………………………………………………. 22
Oil Filters……………………………………………………………. 22
Coolant…………………………………………………………………… 22
Recommended Engine Coolant………………………………………………. 22
Serial Number Locations…………………………………………………….. 23
Product Serial Number…………………………………………………… 23
Diesel Engine Serial Number Location……………………………………… 23
Engine – Diesel……………………………………………………………….. 25
Table of Contents………………………………………………………….. 25
Specifications…………………………………………………………….. 27
General Specifications………………………………………………….. 27
Operational Tests………………………………………………………. 27
Tests and Adjustment Specifications………………………………………. 28
Repair Specifications…………………………………………………… 28
Torque Specifications…………………………………………………… 33
Special Tools………………………………………………………….. 34
Other Materials………………………………………………………… 34
Theory of Operation………………………………………………………… 35
Cooling System Theory of Operation……………………………………….. 35
Lubrication System Theory of Operation……………………………………. 36
Fuel System Theory of Operation………………………………………….. 37
Air System Theory of Operation…………………………………………… 38
Component Location…………………………………………………………. 39
Diesel Engine Component Location…………………………………………. 39
Fuel System Component Location…………………………………………… 40
Diagnostics……………………………………………………………….. 41
Starting Problems………………………………………………………. 41
Low Engine Output………………………………………………………. 42
Exhaust Abnormal Under Load……………………………………………… 43
Engine Runs Rough ……………………………………………………… 44
Excessive Fuel Consumption………………………………………………. 45
Lubricating Oil………………………………………………………… 45
Temperature Problems……………………………………………………. 46
Low Compression………………………………………………………… 46
Diagnostic Table……………………………………………………….. 47
Tests and Adjustments………………………………………………………. 49
Cylinder Compression Test……………………………………………….. 49
Throttle Cable Adjustment……………………………………………….. 49
Slow Idle Adjustment……………………………………………………. 50
Fast Idle Speed Adjustment………………………………………………. 51
Valve Clearance Adjustment………………………………………………. 51
Fuel Injection System Tests……………………………………………… 53
Fuel Injection Nozzle Test………………………………………………. 54
Injection Pump Timing (EPA Engines)………………………………………. 55
Injection Pump Static Timing Check – 3TNV76……………………………….. 56
Injection Pump Static Timing Check – 3TNM72……………………………….. 57
Fuel Injection Timing Adjustment – 3TNM72…………………………………. 59
Thermostat Test………………………………………………………… 60
Water Pump/Alternator Drive Belt Adjustment……………………………….. 61
Radiator Bubble Test……………………………………………………. 61
Cooling System Pressure Test…………………………………………….. 62
Radiator Cap Pressure Test………………………………………………. 62
Engine Oil Pressure Test………………………………………………… 62
Fuel Transfer Pump Pressure Test…………………………………………. 63
Fuel Transfer Pump Flow Test…………………………………………….. 64
Fuel System Air Bleed…………………………………………………… 64
Air Restriction Indicator Test…………………………………………… 64
Repair……………………………………………………………………. 66
Fan/Alternator Belt Remove and Install……………………………………. 66
Air Cleaner Disassembly, Inspection and Assembly…………………………… 66
Valve Cover Remove and Install…………………………………………… 67
Rocker Arm and Push Rods………………………………………………… 68
Radiator Remove and Install……………………………………………… 71
Muffler Remove and Install………………………………………………. 73
Exhaust Manifold Remove and Install………………………………………. 73
Cylinder Head Remove and Install…………………………………………. 73
Engine Remove and Install……………………………………………….. 74
Cylinder Head Recondition……………………………………………….. 76
Crankshaft Oil Seals……………………………………………………. 80
Timing Gear Cover………………………………………………………. 82
Camshaft End Play Check…………………………………………………. 82
Timing Gear Backlash Check………………………………………………. 83
Idler Gear…………………………………………………………….. 84
Camshaft Followers……………………………………………………… 86
Camshaft………………………………………………………………. 86
Oil Pan and Strainer – 3TNV76……………………………………………. 90
Oil Pan and Strainer – 3TNM72……………………………………………. 90
Connecting Rod Side Play Check…………………………………………… 91
Crankshaft End Play Check ………………………………………………. 91
Connecting Rod Bearing Clearance Check……………………………………. 92
Crankshaft Main Bearing Clearance Check – 3TNV76…………………………… 92
Crankshaft Main Bearing Clearance Check – 3TNM72…………………………… 93
Piston and Connecting Rod Repair…………………………………………. 94
Cylinder Bore………………………………………………………….. 99
Crankshaft and Main Bearings – 3TNV76……………………………………..101
Crankshaft and Main Bearings – 3TNM72……………………………………..103
Flywheel Remove and Install………………………………………………105
Engine Back Plate……………………………………………………….106
Timing Gear Housing……………………………………………………..106
Oil Pump – 3TNV76……………………………………………………….107
Oil Pump – 3TNM72……………………………………………………….108
Coolant Temperature Switch……………………………………………….110
Thermostat Remove and Install…………………………………………….110
Water Pump……………………………………………………………..111
Fuel Transfer Pump………………………………………………………112
Fuel Injection Nozzle……………………………………………………113
Fuel Injection Pump – 3TNV76……………………………………………..115
Fuel Injection Pump – 3TNM72……………………………………………..117
Fuel Shutoff Solenoid Remove and Install…………………………………..119
Fuel Control and Governor Linkage Inspection……………………………….120
Fuel Filter Remove and Install……………………………………………121
Fuel Filter Assembly Remove and Install……………………………………122
Starting Motor……………………………………………………………..122
Starting Motor Remove and Install…………………………………………122
Starting Motor Disassemble and Assemble……………………………………123
Starting Motor Inspect and Test…………………………………………..124
Starting Motor Gear Train………………………………………………..126
Starting Motor Solenoid………………………………………………….127
Electrical…………………………………………………………………….129
Table of Contents…………………………………………………………..129
General Information…………………………………………………………131
Reading Electrical Schematics…………………………………………….131
Theory Of Operation Information…………………………………………..132
Diagnostic Information…………………………………………………..132
Wire Color Abbreviation Chart…………………………………………….132
Common Circuit Tests…………………………………………………….133
Conductors For 12 Volt Circuits…………………………………………..133
Specifications……………………………………………………………..134
General Specifications…………………………………………………..134
Test and Adjustment Specifications………………………………………..134
Special or Essential Tools……………………………………………….135
Other Materials…………………………………………………………135
Component Location………………………………………………………….136
Right Side……………………………………………………………..136
Left Side………………………………………………………………137
Diesel Engine…………………………………………………………..138
Instrument Panel………………………………………………………..139
Schematics and Harnesses…………………………………………………….140
Schematic And Wiring Harness Legend……………………………………….140
Main Electrical Schematic (S/N -020000)……………………………………141
Main Electrical Schematic (S/N 020001-)……………………………………143
W1 Main Harness (S/N -020000)…………………………………………….145
W1 Main Harness (S/N 020001-)…………………………………………….147
W2 Headlight Harness…………………………………………………….149
W3 Rear Harness (-020000)………………………………………………..149
W3 Rear Wiring Harness (S/N 020001-)………………………………………150
W4 PTO Option Harness……………………………………………………150
W1 Main Harness Color Codes (S/N -020000)………………………………….151
W1 Main Harness Color Codes (S/N 020001-)………………………………….152
W2 Headlight Harness Color Codes………………………………………….153
W3 Rear Lights Harness Color Codes (S/N -020000)……………………………153
W3 Rear Lights Harness Color Codes (S/N 020001-)……………………………153
W4 PTO Option Harness Color Codes…………………………………………153
Operation and Diagnostics……………………………………………………154
Power Circuit Operation………………………………………………….154
Power Circuit Electrical Schematic (S/N -020000)……………………………156
Power Circuit Electrical Schematic (S/N 020001-)……………………………158
Power Circuit Diagnosis………………………………………………….160
Cranking Circuit Operation……………………………………………….166
Cranking Circuit Electrical Schematic……………………………………..167
Cranking Circuit Diagnosis……………………………………………….169
Charging Circuit Operation (S/N -020000)…………………………………..170
Charging Circuit Operation (S/N 020001-)…………………………………..170
Charging Circuit Electrical Schematic (S/N -020000)…………………………171
Charging Circuit Electrical Schematic (S/N 020001-)…………………………172
Charging Circuit Diagnosis (S/N -020000)…………………………………..173
Charging Circuit Diagnosis (S/N 020001-)…………………………………..173
Glow Plug Circuit Operation………………………………………………175
Glow Plug Circuit Electrical Schematic (S/N -020000)………………………..176
Glow Plug Circuit Electrical Schematic (S/N 020001-)………………………..177
Glow Plug Circuit Diagnosis………………………………………………178
Fuel Supply Circuit Operation…………………………………………….179
Fuel Supply Circuit Electrical Schematic…………………………………..180
Fuel Supply Circuit Diagnosis…………………………………………….181
PTO/RIP Circuit Operation………………………………………………..182
PTO/RIP Circuit Electrical Schematic………………………………………184
PTO/RIP Circuit Diagnosis………………………………………………..186
Display Panel Indicators Circuit Operation…………………………………190
Display Panel Indicators Circuit Schematic…………………………………192
Display Panel Pin and Signal Location……………………………………..194
Display Panel On Board Diagnostics………………………………………..195
Display Panel Diagnostic Codes……………………………………………196
Lights Circuit Operation…………………………………………………197
Lights Circuit Electrical Schematic……………………………………….198
Lights Circuit Diagnosis…………………………………………………199
Power Port Circuit Operation (S/N -020000)…………………………………201
Power Port Circuit Electrical Schematic (S/N -20000)………………………..201
Power Port Circuit Operation (S/N 020001-)…………………………………202
Power Port Circuit Electrical Schematic (S/N 20001-)………………………..202
Power Port Circuit Diagnosis……………………………………………..203
Tests and Adjustments……………………………………………………….204
Common Circuit Tests ……………………………………………………204
Ground Circuit Test……………………………………………………..204
Battery Voltage and Specific Gravity Tests ………………………………..204
Battery – Charge………………………………………………………..206
Battery – Load Test……………………………………………………..206
Unregulated Voltage Test (S/N -020000)…………………………………….207
Stator Resistance Test (S/N -020000)………………………………………207
Regulated Amperage and Voltage Test……………………………………….208
Alternator Unregulated Amperage Test (S/N 020001-)………………………….208
Starting Motor Condition…………………………………………………209
Starter Solenoid Test……………………………………………………209
Starting Motor Amp Draw Test……………………………………………..210
Starting Motor No-load Test………………………………………………210
Engine Coolant Temperature Sensor Test…………………………………….211
Engine Oil Pressure Switch Test…………………………………………..211
Lights Switch Test………………………………………………………212
PTO/RIP Switch Test……………………………………………………..212
Relay Test……………………………………………………………..213
Key Switch Test…………………………………………………………213
Seat Switch Test………………………………………………………..214
Brake Switch Test and Adjustment………………………………………….214
RIO Switch Test…………………………………………………………215
RIO Switch Adjustment……………………………………………………215
Power Port Switch Test…………………………………………………..216
Fuse Test………………………………………………………………216
PTO Solenoid Test……………………………………………………….216
PTO Switch Test (Optional Rear PTO) ………………………………………217
Diode Test……………………………………………………………..218
Fuel Shutoff Solenoid Test……………………………………………….218
Air Restriction Indicator Test……………………………………………219
Fuel Sending Unit Test (SN -040000)……………………………………….219
Fuel Sending Unit Test (SN 040001-)……………………………………….220
Repair…………………………………………………………………….221
20 Amp Alternator……………………………………………………….221
40 Amp Alternator……………………………………………………….221
Power Train – Hydrostatic……………………………………………………….227
Table of Contents…………………………………………………………..227
Specifications……………………………………………………………..229
General Specifications…………………………………………………..229
Test and Adjustment Specifications………………………………………..229
Repair Specifications……………………………………………………229
Torque Specifications……………………………………………………230
Special or Essential Tools……………………………………………….231
Other Materials…………………………………………………………231
Component Location………………………………………………………….232
Power Train – 2WD and MFWD……………………………………………….232
MFWD Output Shaft……………………………………………………….234
Final Drive (MFWD)………………………………………………………236
Front Axle Gear Case (MFWD)………………………………………………237
Front Axle Assembly (MFWD)……………………………………………….239
Hydrostatic Power Train – HFWD Front………………………………………240
Hydrostatic Power Train – HFWD Rear……………………………………….241
Final Drive, Left (HFWD)…………………………………………………242
Final Drive, Right (HFWD)………………………………………………..244
Front Axle Assembly (HFWD)……………………………………………….245
Front Axle Components……………………………………………………247
Front Axle Motor Assembly (HFWD)………………………………………….248
Rear PTO Gear Case Assembly………………………………………………250
Theory of Operation…………………………………………………………252
Center Section and Directional Control Valves – Reverse System Operation………252
Transaxle Oil Flow System Operation……………………………………….255
External Power Train System Operation……………………………………..258
Transaxle Internal System Operation……………………………………….259
Rear PTO Component Location and Operation – Optional………………………..263
540 Rear PTO……………………………………………………………264
Diagnostics………………………………………………………………..265
Symptom: Transmission Problems……………………………………………265
Symptom: Mid-PTO Problems………………………………………………..266
Symptom: Transaxle Differential Problems…………………………………..267
Hydrostatic Transmission Test…………………………………………….267
Mid-PTO System Test……………………………………………………..269
Transaxle Test………………………………………………………….270
Tests and Adjustments……………………………………………………….271
Hydraulic Oil Warm-Up Procedure…………………………………………..271
Charge Pump Pressure Test………………………………………………..271
Charge Pump Flow and Pressure Test – At Charge Pump…………………………272
Mid-PTO Engagement Pressure and Brake Test…………………………………274
Transaxle Neutral Adjustment……………………………………………..275
Transaxle Control Linkage Adjustment (SN -040000)…………………………..276
Transaxle Control Linkage Adjustment (SN 040001-)…………………………..277
Transaxle Linkage Full Forward Adjustment………………………………….278
Cruise Control Linkage Check and Adjustment (-040000)……………………….278
Cruise Control Linkage Check and Adjustment (SN 040001-)…………………….279
HFWD Wheel Speed Adjustment………………………………………………280
Repair…………………………………………………………………….283
Foot Control Linkage Removal and Installation (SN 040001-)…………………..283
Shift Lever Linkage (MFWD) Removal and Installation…………………………286
Oil Cooler Removal and Installation……………………………………….287
Control Arm and Damper Removal and Installation (SN -040000)…………………289
Control Arm and Damper Removal and Installation (SN 040001-)…………………290
Differential Lock Linkage Inspection………………………………………291
Charge Pump Removal and Installation………………………………………292
Charge Pump Disassembly and Assembly………………………………………293
Directional Control Valves……………………………………………….294
Hydrostatic Pressure Relief Valve (45 Loader) Installation…………………..294
Drive Shaft Removal and Installation………………………………………295
PTO Solenoid Valve………………………………………………………296
PTO Relief Valve Removal and Installation………………………………….297
PTO Relief Valve Disassembly, Inspection and Assembly……………………….297
PTO Brake Removal and Installation………………………………………..298
PTO Brake Disassembly, Inspection and Assembly……………………………..299
PTO Drive Train (Mid-PTO) Removal and Installation …………………………300
PTO Drive Train (Mid and Rear PTO) Removal and Installation………………….301
Rear PTO Removal and Installation…………………………………………304
Transaxle Removal and Installation………………………………………..307
Differential Lock Shaft Disassembly and Assembly……………………………309
Differential (2-Wheel Drive and HFWD) Disassembly and Assembly……………….310
Differential (MFWD) Disassembly and Assembly……………………………….312
PTO Clutch Disassembly, Inspection and Assembly…………………………….314
MFWD Output Shaft Removal and Installation…………………………………315
Hydrostatic Transmission 2-WD and MFWD…………………………………….317
Hydrostatic Pump Inspection………………………………………………325
Transaxle Disassembly……………………………………………………326
Transaxle (Right Cover) Disassembly and Assembly……………………………328
Transaxle Case Inspection………………………………………………..329
Transaxle Assembly………………………………………………………330
Rear Axle Assembly (Two Wheel Steer Models) Removal and Installation………….331
Rear Axle Assembly (Two Wheel Steer Models) Disassembly and Assembly………….332
Rear Axle Assembly (All Wheel Steer) Removal and Installation………………..334
Rear Axle Assembly (All Wheel Steer) Disassembly and Assembly………………..335
Knuckle Assembly (All Wheel Steer) Removal and Installation………………….336
Knuckle Housing Disassembly and Assembly…………………………………..336
MFWD Repair………………………………………………………………..337
Final Drive Cover – (MFWD)……………………………………………….337
Final Drive Housing – (MFWD)……………………………………………..340
Spindle Housing – (MFWD)…………………………………………………341
Drive Shaft – (MFWD)…………………………………………………….342
Axle – (MFWD) ………………………………………………………….343
Differential Input Housing – (MFWD)……………………………………….344
Front Axle Housing Disassembly and Assembly (MFWD)………………………….345
HFWD Repair………………………………………………………………..347
Final Drive Cover – (HFWD)……………………………………………….347
Final Drive Housing – (HFWD)……………………………………………..348
Hydraulic Front Wheel Drive – (HFWD) ……………………………………..354
HFWD Axle………………………………………………………………356
Hydraulics…………………………………………………………………….363
Table of Contents…………………………………………………………..363
Specifications……………………………………………………………..365
General Specifications…………………………………………………..365
Test and Adjustment Specifications………………………………………..365
Repair Torque Specifications……………………………………………..366
Special or Essential Tools……………………………………………….367
Other Materials…………………………………………………………367
Repair Kits…………………………………………………………….367
Schematics 2WD and MFWD……………………………………………………..368
Power Train – 2WD and MFWD……………………………………………….368
Transmission – 2WD and MFWD………………………………………………369
Steering – 2WD and MFWD………………………………………………….370
Schematics – HFWD…………………………………………………………..371
Power Train – HFWD………………………………………………………371
Transmission – HFWD……………………………………………………..372
Steering – HFWD…………………………………………………………373
Component Location………………………………………………………….374
Hydraulic System………………………………………………………..374
Theory of Operation…………………………………………………………375
Hydraulic System………………………………………………………..375
Control Valve Operation – Neutral…………………………………………377
Control Valve Operation – Raise…………………………………………..378
Control Valve Operation – Float…………………………………………..379
Valve Operation – Regen………………………………………………….380
Lift Cylinder Shut-off Valve – Optional……………………………………381
Diagnostics………………………………………………………………..381
Preliminary System Inspection…………………………………………….381
Hydraulic System Tests…………………………………………………..382
Symptom: Hydraulic Malfunction……………………………………………382
Tests and Adjustments……………………………………………………….386
Hydraulic Oil Warm-Up Procedure…………………………………………..386
Charge Pump Pressure and Flow Test………………………………………..386
Charge Pump Pressure Test………………………………………………..387
Lift Cylinder Leakage Test……………………………………………….388
Control Valve Leakage Test……………………………………………….389
Repair…………………………………………………………………….390
Lift Cylinder Removal and Installation…………………………………….390
Control Valve Removal and Installation…………………………………….390
Control Valve…………………………………………………………..390
Control Levers and Linkage……………………………………………….393
Steering………………………………………………………………………395
Table of Contents…………………………………………………………..395
Specifications……………………………………………………………..397
General Specifications…………………………………………………..397
Test and Adjustment Specifications………………………………………..397
Repair Specifications……………………………………………………397
Special or Essential Tools……………………………………………….398
Component Location………………………………………………………….399
Steering Components – Front Wheel Steer……………………………………399
Steering Components – All Wheel Steer 2WD………………………………….400
Steering Components – All Wheel Steer HFWD…………………………………401
Steering Components – All Wheel Steer Rear Axle…………………………….402
Theory of Operation…………………………………………………………403
Steering System Operation………………………………………………..403
Steering Valve Operation – Neutral………………………………………..404
Steering Valve Operation – Turning………………………………………..405
Steering Valve Operation – Manual…………………………………………406
Diagnostics………………………………………………………………..407
Steering Diagnosis………………………………………………………407
Steering System Tests……………………………………………………408
Steering Link Checks…………………………………………………….408
Tests and Adjustments……………………………………………………….410
Hydraulic Oil Warm-Up Procedure…………………………………………..410
Steering Valve and Cylinder Leakage Test…………………………………..410
Toe-In Adjustment Front Wheels……………………………………………411
Toe-In Adjustment All Wheel Steering………………………………………411
Repair…………………………………………………………………….413
Steering Column Removal and Installation…………………………………..413
Steering Valve Removal and Installation …………………………………..414
Steering Valve Disassembly and Assembly……………………………………415
Steering Cylinder Removal and Installation…………………………………418
Front Axle – 2WD………………………………………………………..419
Front Axle – MFWD and HFWD……………………………………………….421
Steering Intermediate Linkage – AWS / 2WD………………………………….421
Steering Intermediate Linkage – AWS / HFWD…………………………………424
Front and Rear Pivots – AWS / 2WD and HFWD…………………………………428
Rear Steering Linkage – All Wheel Steering…………………………………430
Brakes………………………………………………………………………..433
Table of Contents…………………………………………………………..433
Specifications……………………………………………………………..435
General Specifications…………………………………………………..435
Test and Adjustment Specifications………………………………………..435
Repair Specifications……………………………………………………435
Special or Essential Tools……………………………………………….435
Other Materials…………………………………………………………435
Component Location………………………………………………………….436
Brake System Component Location…………………………………………..436
Brake – Differential Linkage (Exploded)……………………………………437
Theory of Operation…………………………………………………………438
Brake System Operation…………………………………………………..438
Diagnostics………………………………………………………………..439
Brakes…………………………………………………………………439
Tests and Adjustments……………………………………………………….441
Brake – Differential Linkage Adjustment……………………………………441
Repair…………………………………………………………………….443
Brake – Differential Linkage Removal and Installation……………………….443
Brakes Removal and Installation…………………………………………..445
Attachments……………………………………………………………………447
Table of Contents…………………………………………………………..447
Specifications……………………………………………………………..449
General Specifications…………………………………………………..449
Torque and Repair Specifications………………………………………….451
Diagnostics………………………………………………………………..453
Mower Deck Diagnosis…………………………………………………….453
45 Loader Diagnosis……………………………………………………..455
Tests and Adjustments……………………………………………………….457
Adjusting Cutting Height…………………………………………………457
Adjusting Mower Deck Wheels………………………………………………457
Mower Deck Level Check and Adjustment……………………………………..458
Adjusting Mower Level Side-to-Side………………………………………..458
Adjusting Mower Level Front-to-Rear……………………………………….459
Adjusting Latch Rod……………………………………………………..460
Cylinder Leakage Test……………………………………………………460
45 Loader Lubrication……………………………………………………460
Repair…………………………………………………………………….461
Cleaning Grass and Debris From Machine…………………………………….461
Mower Deck Belt and Shield Removal and Installation – 48C, 54C, and 62C Decks….461
Mower Deck Belt and Shield Removal and Installation – 60D Deck……………….462
Mower Deck Blade Removal and Installation………………………………….463
Sharpen and Balance Blades……………………………………………….464
Idlers…………………………………………………………………464
Spindle Removal and Installation – 48C Deck………………………………..464
Jacksheave – 48C Deck……………………………………………………467
Spindle Removal and Installation – 54C Deck………………………………..467
Jacksheave – 54C Deck……………………………………………………469
Spindle Removal and Installation – 60D Deck………………………………..470
Jacksheave – 60D Deck……………………………………………………472
Spindle Removal and Installation – 62C Deck………………………………..473
Mower Deck Drive Shaft Removal and Installation…………………………….474
Mower Deck Drive Shaft Repair…………………………………………….476
Mower Deck Drive Shaft Repair – 60D Deck…………………………………..477
Mower Deck Gearbox Removal and Installation………………………………..478
Mower Deck Gearbox Removal and Installation – 60D Deck………………………481
Mower Deck Gearbox Repair – Early…………………………………………481
Mower Deck Gearbox Repair – Late………………………………………….483
Miscellaneous………………………………………………………………….485
Table of Contents…………………………………………………………..485
Specifications……………………………………………………………..487
Repair Specifications……………………………………………………487
Other Materials…………………………………………………………487
Repair…………………………………………………………………….488
Headlights Adjustment……………………………………………………488
Hood Removal and Installation…………………………………………….488
Fender Deck Removal and Installation………………………………………489
Foot Deck Removal and Installation………………………………………..490
Fuel Tank Removal and Installation………………………………………..490
Fuel Pump and Fuel Gauge Sensor Removal and Installation…………………….491
Front Wheel Removal and Installation………………………………………491
Rear Wheel Removal and Installation……………………………………….492
Instrument Panel Removal and Installation………………………………….492
Lift Linkage Removal and Installation……………………………………..493
Lift Linkage Adjustment………………………………………………….494
Deck Height Stop Removal and Installation………………………………….495
Index…………………………………………………………………………497
Numerics…………………………………………………………………..497
A…………………………………………………………………………497
B…………………………………………………………………………497
C…………………………………………………………………………497
D…………………………………………………………………………498
E…………………………………………………………………………498
F…………………………………………………………………………500
G…………………………………………………………………………500
H…………………………………………………………………………501
I…………………………………………………………………………501
K…………………………………………………………………………501
L…………………………………………………………………………501
M…………………………………………………………………………501
O…………………………………………………………………………502
P…………………………………………………………………………502
R…………………………………………………………………………502
S…………………………………………………………………………503
T…………………………………………………………………………503
U…………………………………………………………………………504
V…………………………………………………………………………505
W…………………………………………………………………………505

IMAGES PREVIEW OF THE MANUAL:

JOHN DEERE TRACTORS ULTIMATE SERIES X740 X744 X748 & X749 TECHNICAL MANUAL – PDF DOWNLOAD:

PLEASE NOTE:

• This is the same manual used by the DEALERSHIPS to SERVICE your vehicle.
• The manual can be all yours – Once payment is complete, you will be taken to the download page from where you can download the manual. All in 2-5 minutes time!!
• Need any other service / repair / parts manual, please feel free to contact us at [email protected] . We may surprise you with a nice offer

S.V