Caterpillar 793C 793C XQ Off-Highway Truck Tractor Service Repair Manual PDF - MCAT793COPES.zip
A full factory-level service and repair guide, complete with Electrical Wiring Diagrams, for the Caterpillar 793C Off-Highway Truck/Tractor — packed with every technical detail needed to service, troubleshoot, fix, and overhaul the machine just like a trained professional technician.
Contained within this Caterpillar 793C Off-Highway Truck/Tractor workshop service repair manual:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
SENR1446 - Schematic (793C OFF-HIGHWAY TRUCK HYDRAULIC SCHEMATIC).pdf
SENR1447 - Schematic (793C Truck Electrical System (For Serial Numbers 4AR1-217)) .pdf
SENR1448 - Specifications (793C and 793C XQ Off-Highway Truck Power Train).pdf
SENR1449 - Systems Operation (793C Off-Highway Truck Power Train).pdf
SENR1451 - Specifications (793C and 793C XQ Off-Highway Truck Steering System).pdf
SENR1452 - Systems Operation & Testing and Adjusting (793C and 793C XQ Off-Highway Truck Steering System).pdf
SENR1453 - Specifications (793C and 793C XQ Off-Highway Truck Air System and Brakes).pdf
SENR1454 - Systems Operation (793C Off-Highway Truck Air System and Brakes).pdf
SENR1454 - Testing and Adjusting (793C Off-Highway Truck Air System and Brakes).pdf
SENR1457 - Specifications (793C and 793C XQ Off-Highway Truck Hydraulic System).pdf
SENR1458 - Systems Operation (793C Off-Highway Truck Hydraulic System).pdf
SENR1458 - Testing and Adjusting (793C Off-Highway Truck Hydraulic System).pdf
SENR1462 - Disassembly and Assembly (793C Off-Highway Truck_Tractor Power Train).pdf
SENR1463 - Disassembly and Assembly (793C Off-Highway Truck Machine Systems).pdf
SENR1480 - Schematic (793C Off-Highway Truck Electrical System;146-8805-01(For Serial Numbers 4AR218-UP)).pdf
UENR2531 - Schematic (Off-Highway Truck CAT Detect Object Detection Wash Electrical System; 376-2331).pdf
UENR2635 - Schematic (Off-Highway Truck CAT Detect Object Detection Electrical System; 382-0969).pdf
PRODUCT DETAILS:
Total Pages: 2,465 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
SENR1446 - Schematic (793C OFF-HIGHWAY TRUCK HYDRAULIC SCHEMATIC)................1
SENR1447 - Schematic (793C Truck Electrical System (For Serial Numbers 4AR1-217)) ................3
Features................3
Cover Page................5
Information................0
Component Location................0
Page 1 of 2................6
Page 2 of 2................7
Connector Location................8
Schematic................9
Machine Views................0
Machine Harness Connector and Component Locations................10
Rear Compartment (Area E) Rear View................11
Rear Compartment Side Wall (Area J) Right Side View................12
SENR1448 - Specifications (793C and 793C XQ Off-Highway Truck Power Train)................13
Pump Drive Shaft................15
Pump Drive................16
Gear Pump (Transmission and Torque Converter)................18
Oil Filter (Torque Converter)................20
Pressure Switch (Torque Converter Inlet Filter)................23
Torque Converter................25
Relief Valve (Torque Converter Inlet)................29
Relief Valve (Torque Converter Outlet)................30
Lockup Clutch and Synchronizing Valve (Torque Converter)................32
Temperature Sensor (Torque Converter Oil)................36
Screen (Torque Converter)................38
Bypass Switch (Torque Converter Screen)................41
Speed Sensor (Torque Converter Output)................42
Oil Filter (Transmission Charging)................43
Bypass Switch (Transmission Charging Filter)................46
Transmission Control................47
Accelerator Control................50
Transmission Hydraulic Control................52
Selector and Pressure Control Valve (Transmission)................57
Pressure Control Valve (Transmission)................60
Solenoid Valve (Upshift; Downshift and Lockup Clutch)................65
Rotary Actuator (Transmission)................67
Lubrication Relief Valve (Transmission)................68
Transmission Planetary................69
Speed Sensor (Transmission)................73
Temperature Sensor (Transmission Oil)................74
Transfer Gears................76
Drive Shaft (Main)................78
Differential and Bevel Gear................79
Differential................85
Gear Pump (Rear Axle Oil)................87
Pressure Sensor (Rear Axle Oil Pump)................89
Oil Filter (Rear Axle)................91
Bypass Switch (Rear Axle Oil Filter)................94
Flow Control and Relief Valve (Rear Axle Oil)................95
Liquid Level Switch (Rear Axle Oil)................98
Temperature Sensor (Rear Axle Oil)................100
Rear Axle Housing................102
Rear Wheel................105
Speed Sensor (Rear Wheel)................109
Final Drive................111
Torque Converter and Transmission Pressure Chart................119
SENR1449 - Systems Operation (793C Off-Highway Truck Power Train)................126
General Information................128
Power Train Hydraulic System................131
Power Train Electrical System................133
Transmission Electronic Control................135
Transmission Gear Indicator................136
Hoist Control Lever................140
Electronic Control (Body Down or Up Switch)................141
Speed Sensor (Transmission)................142
Solenoid Valve (Upshift and Downshift)................143
Lockup Solenoid................144
Neutral Start Control................145
Neutral Coasting................146
Parking Brake and Secondary Brake Switch................147
Service Brake and Retarder Switch................149
Torque Converter and Transmission Hydraulic System................150
Torque Converter Sump................160
Torque Converter................161
Power Train Components and Lines................167
Gear Pump (Torque Converter and Transmission)................174
Oil Filter (Torque Converter)................177
Torque Converter Inlet and Outlet Relief Valves................180
Lockup Clutch and Synchronizing Valve (Torque Converter)................183
Screen (Torque Converter)................187
Oil Cooler (Torque Converter and Transmission)................190
Transmission Clutch Engagement................191
Transmission Hydraulic Control................200
Oil Filter (Transmission Charging)................203
Magnetic Screen (Transmission)................206
Rotary Actuator (Transmission)................208
Selector and Pressure Control Valve (Transmission)................210
Pressure Control Valve (Transmission)................217
Lubrication Relief Valve (Transmission)................223
Transmission Planetary................224
Transfer Gears................235
Rear Axle and Final Drive System................237
Differential and Bevel Gear................239
Gear Pump (Rear Axle Oil)................242
Oil Filter (Rear Axle)................243
Flow Control and Relief Valve (Rear Axle Oil)................246
Temperature Sensor (Rear Axle Oil)................249
Final Drive................250
SENR1451 - Specifications (793C and 793C XQ Off-Highway Truck Steering System)................252
Steering Tank and Filter................253
Temperature Sensor (Steering Oil)................256
Piston Pump (Steering)................258
Pump Drive................264
Pump Drive Shaft................266
Oil Filter (Steering Pump Case Drain)................267
Accumulator Charging Valve................269
Check Valve (Steering)................275
Steering Accumulator................276
Solenoid and Relief Valve (Steering)................278
Solenoid Valve (Steering)................283
Pressure Switch (Steering Pump Oil High)................287
Relief Valve (Steering)................288
Steering Control Valve................290
Check and Relief Valve (Steering)................293
Steering Gear................294
Metering Pump (Steering)................296
Pressure Switch (Steering Pump Oil Low)................297
Steering Cylinder................298
Steering Linkage and Cylinder Mounting................300
Front Wheel................306
SENR1452 - Systems Operation & Testing and Adjusting (793C and 793C XQ Off-Highway Truck Steering System)................309
Steering System................310
Piston Pump (Steering)................320
Accumulator Charging Valve................324
Steering Accumulator................330
Solenoid and Relief Valve (Steering)................331
Steering Control Valve................335
Metering Pump (Steering)................345
Pressure Switches................352
General Information................354
Visual Inspection................355
Steering System Troubleshooting................357
Piston Pump (Steering) Pressure - Test and Adjust................367
Relief Valve (Steering) - Test and Adjust................377
Steering Control Valve - Adjust................379
Steering Accumulator - Test and Charge................381
Front Axle - Install and Adjust................389
Front Wheel Bearing - Adjust - Standard Wheel................392
Front Wheel - Align................395
Pump Drive - Adjust................398
Worksheets................400
SENR1453 - Specifications (793C and 793C XQ Off-Highway Truck Air System and Brakes)................402
Air Compressor Governor................404
Air Dryer................405
Relief Valve (Air Dryer)................408
Relief Valve (Primary Air Tank)................410
Check Valve (Primary Air Tank)................411
Air Starting Motor................412
Window Wiper Motor................416
Air Control Valve (Window Wiper)................419
Air Control Valve (Service Brake)................421
Air Control Valve (Retarder)................423
Check Valve (Service Brake Control)................425
Air Control Valve (Secondary Brake)................426
Brake Valve (Parking and Secondary)................428
Pressure Protection Valve (Air System)................432
Pressure Protection Valve (Brake Air System)................434
Solenoid Valve (Air Horn)................436
Diverter Valve (Front Brake Cooling)................438
Relay Valve (Brake Air)................440
Control Valve (Hoist)................442
Air_Hydraulic Cylinder (Front Brake)................450
Air_Hydraulic Cylinder (Rear Brake)................454
Limit Switch (Brake Cylinder Overstroke)................456
Slack Adjuster (Front)................457
Slack Adjuster (Rear)................459
Hydraulic Tank (Hoist and Brake)................461
Hydraulic Tank (Hoist and Brake) Mounting................464
Gear Pump (Hoist and Front Brake Cooling)................465
Gear Pump (Rear Brake Cooling and Parking Brake Release)................468
Brake Release Pump and Motor (Parking and Secondary)................470
Pump Drive................472
Pump Drive Shaft................474
Relief Valve (Rear Brake Oil Cooler)................475
Traction Control Valve................477
Oil Filter (Front Brake Cooling)................483
Pressure Switch (Front Brake Cooling Hydraulic Filter)................485
Oil Filter (Parking Brake Release)................487
Bypass Switch (Parking Brake Release Hydraulic Filter)................490
Front Wheel................492
Service and Parking Brake (Front)................495
Rear Wheel................499
Service and Parking Brake (Rear)................503
Temperature Sensor (Brake Oil)................507
Pressure Sensor (Brake Air)................509
Pressure Switch (Secondary Brake and Parking Brake)................512
Pressure Switch (Service Brake and Retarder)................513
Pressure Switch (Manual Retarder)................514
Pressure Switch (Automatic Retarder Control)................515
Pressure Switch (Stop Light)................517
Solenoid Valve (Automatic Retarder Supply and Automatic Retarder Control)................518
SENR1454 - Systems Operation (793C Off-Highway Truck Air System and Brakes)................519
Air System Schematic................520
Hydraulic System Schematic................523
Air Compressor................527
Air Compressor Governor................528
Air Dryer................530
Air Tank................531
Check Valve (Air Tank)................533
Pressure Protection Valve (Air System)................535
Air Control Valve (Service Brake)................538
Air Control Valve (Secondary Brake)................541
Air Control Valve (Parking Brake)................542
Brake Valve (Parking and Secondary)................545
Air Control Valve (Retarder)................549
Check Valve (Double)................552
Air_Hydraulic Cylinder (Brake)................554
Air Flow Schematic................557
Relief Valve (Brake Oil Cooler)................568
Oil Filter (Parking Brake Release)................569
Brake Cooling System................572
Slack Adjuster................575
Service and Parking Brake................577
Towing................582
SENR1454 - Testing and Adjusting (793C Off-Highway Truck Air System and Brakes)................585
General Information................586
Visual Inspection................588
Operational Checks................589
Brake System Troubleshooting................595
Air Compressor Governor - Test and Adjust................606
Air Control Valve (Retarder) Pressure - Test and Adjust................611
Brake System Air - Purge................613
Service Brake Discs - Check................619
Service Brakes and Retarder System Leakage - Check................628
Service Brakes and Retarder System Pressure - Test................636
Slack Adjuster - Test and Adjust................640
Brake Cooling Pressure - Check................645
Internal Brake Leakage - Check................651
Parking and Secondary Brake Release System Leakage - Check................658
Relief Valve (Electric Drive Pump) - Adjust................662
Towing the Machine - Preparation................665
Worksheets................667
SENR1457 - Specifications (793C and 793C XQ Off-Highway Truck Hydraulic System)................670
Hydraulic Tank (Hoist and Brake)................671
Hydraulic Tank (Hoist and Brake) Mounting................674
Gear Pump (Hoist and Front Brake Cooling)................675
Pump Drive................678
Pump Drive Shaft................680
Manifold (Hoist)................681
Bypass Switch (Hoist Screen)................685
Control Valve (Hoist)................686
Relief Valve (Hoist Dual Stage)................694
Solenoid Valve (Hoist)................696
Solenoid Valve (Hoist) ................697
Position Sensor (Hoist Control)................698
Relief Valve (Rear Brake Oil Cooler)................699
Hoist Cylinder................703
Cab Mounting................705
Body Mounting................707
SENR1458 - Systems Operation (793C Off-Highway Truck Hydraulic System)................711
General Information................712
Hydraulic System Schematic................713
Hydraulic Components and Lines................715
Hydraulic Tank (Hoist and Brake)................719
Hoist and Front Brake Cooling Pump - Double Section................722
Hoist Control Lever................723
Hoist Control Valve................724
Hoist Cylinder................731
Relief Valve (Rear Brake Oil Cooler)................737
SENR1458 - Testing and Adjusting (793C Off-Highway Truck Hydraulic System)................739
General Information................740
Hoist System Troubleshooting................742
Hoist and Brake Cooling Hydraulic System Troubleshooting................744
Brake Oil Overheating - Troubleshooting................754
Hoist Cylinder Performance - Test................760
Relief Valve (Hoist Dual Stage) - Test and Adjust................762
Hydraulic Tank Oil Fill - Test_Adjust................768