Caterpillar 303 CR Mini Hydraulic Excavators Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Caterpillar 303 CR Mini Hydraulic Excavators, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.
Caterpillar 303 CR Mini Hydraulic Excavators workshop service repair manual includes:
* 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.
PRODUCT DETAILS:
Total Pages: 934 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
RENR5576 - Schematic (303 Excavator Electrical System, 191-3850 (For Serial Numbers DMA1-3507)).pdf
RENR5577 - Systems Operation (303 CR Excavator Electric and Electronic System).pdf
RENR5577 - Testing and Adjusting (303 CR Excavator Electric and Electronic System).pdf
RENR5585 - Disassembly and Assembly (303 CR Mini Hydraulic Excavator Engine Supplement).pdf
RENR5586 - Specifications (303 CR Mini Hydraulic Excavator Machine System).pdf
RENR5587 - Systems Operation (303 CR Mini Hydraulic Excavator Hydraulic System).pdf
RENR5588 - Testing and Adjusting (303 CR Mini Hydraulic Excavator Hydraulic System).pdf
RENR5589 - Schematic (303 CR Mini Hydraulic Excavator Hydraulic System).pdf
RENR5593 - Disassembly and Assembly (303 CR Mini Hydraulic Excavator Machine System).pdf
RENR6957 - Schematic (303 CR Mini Hydraulic Excavator Hydraulic System (For Serial Numbers DMA170-UP)).pdf
UENR6715 - Schematic (303 Excavator Electrical System, 191-3850-03(For Serial Numbers DMA3508-UP)).pdf
MAIN SECTIONS
RENR5576 - Schematic (303 Excavator Electrical System, 191-3850 (For Serial Numbers DMA1-3507)).....2
Collage.....3
Main.....28
RENR5577 - Systems Operation (303 CR Excavator Electric and Electronic System).....30
Electrical System.....31
Engine Control System.....38
General Information.....44
Monitoring System.....45
RENR5577 - Testing and Adjusting (303 CR Excavator Electric and Electronic System).....48
Accelerator Cable - Adjust.....49
Action Alarm Does Not Sound - Troubleshoot.....55
Alarm Indicator for Engine Oil Pressure Is Illuminated and Action Alarm Is Activated - Troubleshoot.....56
Charge Alarm Indicator Is Illuminated - Troubleshoot.....58
Chassis Light Does Not Illuminate - Troubleshoot.....60
Electrical System Troubleshooting.....65
Engine Coolant Temperature Gauge Reads High or Gauge Quickly Moves Beyond Operating Range - Troubleshoot.....69
Engine Coolant Temperature Gauge Reads Low or Gauge Does Not Move - Troubleshoot.....71
Fuel Gauge Reads High or Gauge Quickly Moves Beyond Operating Range - Troubleshoot.....73
Fuel Gauge Reads Low or Gauge Does Not Move - Troubleshoot.....75
Fuel Pump Does Not Activate - Troubleshoot.....77
General Information.....79
Glow Indicator Does Not Illuminate - Troubleshoot.....80
Harness and Wire Identification.....83
Horn Does Not Sound - Troubleshoot.....86
Indicators Do Not Illuminate - Troubleshoot.....89
Indicators Do Not Illuminate and Action Alarm Does Not Sound - Troubleshoot.....90
Panel Light for Monitor Does Not Illuminate - Troubleshoot.....92
Service Hour Meter Does Not Activate - Troubleshoot.....94
Service Tools.....96
Starting Motor Does Not Rotate - Troubleshoot.....97
Starting Motor Rotates But Engine Does Not Start - Troubleshoot.....102
RENR5585 - Disassembly and Assembly (303 CR Mini Hydraulic Excavator Engine Supplement).....104
Air Cleaner - Remove and Install.....105
Alternator - Remove and Install.....110
Battery and Battery Cable - Separate and Connect.....114
Electric Starting Motor - Remove and Install.....117
Engine - Install.....121
Engine - Remove.....131
Engine Enclosure Group - Remove and Install.....140
Engine Front Support - Install.....143
Engine Front Support - Remove.....145
Engine Mount - Install.....147
Engine Mount - Remove.....149
Fan - Remove and Install.....151
Fan Guard - Remove and Install.....154
Fuel Filter - Remove and Install.....158
Fuel Transfer Pump - Remove and Install.....163
Hood - Remove and Install.....167
Hydraulic Oil Cooler - Remove and Install.....169
Muffler - Remove and Install.....172
Radiator - Remove and Install.....177
Shutoff Solenoid - Remove and Install.....186
Water Pump - Remove and Install.....190
Water Separator - Remove and Install.....195
Water Temperature Regulator - Remove and Install.....200
RENR5586 - Specifications (303 CR Mini Hydraulic Excavator Machine System).....205
Accumulator (Pilot).....206
Blade Lift Cylinder.....208
Blade Mounting.....209
Boom Cylinder.....210
Boom.....211
Bucket Cylinder.....213
Bucket Linkage.....214
Check Valve (Return Lines).....216
Control Valve (Main).....217
Front Idler.....222
Heater Lines.....224
Joystick Control.....225
Main Hydraulic Pump.....227
Pilot Valve (Oil Manifold).....229
Pilot Valve (Travel).....231
Pilot Valve - Auxiliary.....233
Recoil Spring.....235
Stick - Long.....236
Stick Cylinder.....238
Stick.....239
Swing Boom Cylinder.....241
Swing Gear and Bearing.....242
Swing Motor.....244
Swivel.....247
Travel Motor.....249
RENR5587 - Systems Operation (303 CR Mini Hydraulic Excavator Hydraulic System).....252
Accumulator (Pilot).....253
Blade Hydraulic System.....256
Boom Hydraulic System.....258
Bucket Hydraulic System.....260
Cylinders (Boom, Stick and Bucket).....262
Final Drive.....265
General Information.....269
Hydraulic Pedal Control.....270
Implements and Swing Controls Alternate Patterns - If Equipped.....275
Main Control Valve.....281
Main Hydraulic Pump.....288
Main Hydraulic System.....291
Pilot Hydraulic System.....294
Pump Control (Main Hydraulic).....296
Relief Valve (Line).....299
Relief Valve (Main).....301
Relief Valve (Pilot).....303
Return Hydraulic System.....305
Stick Hydraulic System.....307
Swing Boom Hydraulic System.....309
Swing Hydraulic System.....315
Swing Motor.....319
Travel Hydraulic System.....325
Travel Motor.....330
Travel Parking Brake.....336
RENR5588 - Testing and Adjusting (303 CR Mini Hydraulic Excavator Hydraulic System).....341
Accumulator (Pilot) - Test and Charge.....342
Cylinder Drift - Check.....348
Cylinder Speed - Check.....353
Engine Performance - Test - Engine Speed.....359
General Testing and Adjusting Information.....360
Hydraulic System Pressure - Release.....361
Machine Drift on a Slope - Check.....363
Main Hydraulic Pump Air - Purge.....365
Operational Checks.....367
Relief Valve (Line) - Test and Adjust.....368
Relief Valve (Main) - Test and Adjust.....374
Relief Valve (Pilot) - Test and Adjust.....386
Relief Valve (Swing) - Test and Adjust.....389
Specifications.....392
Swing Speed and Overswing on Level Ground - Check.....396
Swing Speed and Swing Drift on a Slope - Check.....399
Travel on Level Ground - Test - Optional Test.....403
Travel on Level Ground - Test.....405
Visual Inspection.....408
RENR5589 - Schematic (303 CR Mini Hydraulic Excavator Hydraulic System).....409
RENR5593 - Disassembly and Assembly (303 CR Mini Hydraulic Excavator Machine System).....411
Accumulator - Remove and Install.....414
Auxiliary Hydraulic Pump - Install.....420
Auxiliary Hydraulic Pump - Remove.....422
Blower Motor - Remove and Install.....425
Boom - Install.....430
Boom - Remove.....434
Boom Cylinder - Remove and Install.....438
Bucket - Install.....447
Bucket - Remove.....449
Bucket Cylinder - Remove and Install.....451
Bucket Linkage - Install.....456
Bucket Linkage - Remove.....458
Cab - Remove and Install.....460
Control Panel - Install.....470
Control Panel - Remove.....473
Counterweight - Remove and Install.....476
Duo-Cone Conventional Seals - Install.....484
Final Drive Sprocket - Remove and Install.....491
Front Idler and Track Adjuster - Install.....494
Front Idler and Track Adjuster - Remove.....496
Fuel Tank - Install.....498
Fuel Tank - Remove.....504
Heater Coil - Remove and Install.....510
Hydraulic Controls Lockout Lever - Assemble.....515
Hydraulic Controls Lockout Lever - Disassemble.....517
Hydraulic Controls Lockout Lever - Install.....519
Hydraulic Controls Lockout Lever - Remove.....521
Hydraulic System Pressure - Release.....523
Hydraulic Tank and Filter - Install.....528
Hydraulic Tank and Filter - Remove.....534
Joystick Control - Remove and Install.....540
Main Control Valve - Assemble.....544
Main Control Valve - Disassemble.....579
Main Control Valve - Install.....609
Main Control Valve - Remove.....612
Main Hydraulic Pump - Assemble.....616
Main Hydraulic Pump - Disassemble.....626
Main Hydraulic Pump - Install.....636
Main Hydraulic Pump - Remove.....639
Main Hydraulic Pump and Pump Drive Coupling - Install.....643
Main Hydraulic Pump and Pump Drive Coupling - Remove.....645
Pilot Valve (Joystick) - Assemble.....648
Pilot Valve (Joystick) - Disassemble.....656
Pilot Valve (Joystick) - Install.....664
Pilot Valve (Joystick) - Remove.....668
Pilot Valve (Travel) - Assemble.....672
Pilot Valve (Travel) - Disassemble.....684
Pilot Valve (Travel) - Install.....695
Pilot Valve (Travel) - Remove.....698
Recoil Spring - Install.....702
Recoil Spring - Remove.....704
Seat - Remove and Install.....706
Stick - Install.....708
Stick - Remove.....712
Stick Cylinder - Remove and Install.....717
Swing Gear and Bearing - Install.....723
Swing Gear and Bearing - Remove.....725
Swing Motor - Assemble.....727
Swing Motor - Disassemble.....741
Swing Motor - Install.....756
Swing Motor - Remove.....759
Swivel - Assemble.....763
Swivel - Disassemble.....770
Swivel - Install.....775
Swivel - Remove.....779
Track - Remove and Install.....784
Track Carrier Roller - Install.....789
Track Carrier Roller - Remove.....792
Track Roller - Install.....795
Track Roller - Remove.....798
Travel Motor - Assemble.....801
Travel Motor - Disassemble.....823
Travel Motor - Install.....846
Travel Motor - Remove.....849
Travel Motor Guard - Remove and Install.....853
Undercarriage Frame - Install.....855
Undercarriage Frame - Remove.....863
Window Wiper Motor - Remove and Install.....870
RENR6957 - Schematic (303 CR Mini Hydraulic Excavator Hydraulic System (For Serial Numbers DMA170-UP)).....874
Collage.....875
Main.....891
Features.....891
Cover Page.....892
Information.....0
Component Location.....893
Tap Location.....894
Fluid Power Symbols.....895
Electrical Symbols.....896
Schematic.....897
Machine Views.....0
Machine Component Locations.....898
Tap Locations.....899
UENR6715 - Schematic (303 Excavator Electrical System, 191-3850-03(For Serial Numbers DMA3508-UP)).....900
Collage.....901
Main.....926
Features.....926
Cover Page.....927
Information.....0
Component Location.....928
Connector Location.....929
Specification and Related Manuals.....930
Standard Electrical.....931
Schematic.....932
Machine Views.....0
Machine Component Locations.....933
Operator Station.....934
