Caterpillar Mini Excavators 304C CR, 305C CR Workshop Service Repair manual with Electrical Wiring Diagrams (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnosis & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

This manual (832 pages PDF) contains high quality images, circuit diagrams, instructions to help you to maintenance, troubleshoot, diagnose, and repair. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.

RENR9633 - Specifications (304C CR and 305C CR Mini Hydraulic Excavators Machine System).pdf
RENR9634 - Systems Operation (304C CR and 305C CR Mini Hydraulic Excavators Hydraulic System) .pdf
RENR9635 - Testing and Adjusting (304C CR and 305C CR Mini Hydraulic Excavators Hydraulic System).pdf
RENR9636 - Schematic (304C CR and 305C CR Mini Excavator Hydraulic System).pdf
RENR9637 - Disassembly and Assembly (304C and 305C Mini Hydraulic Excavators Engine Supplement).pdf
RENR9638 - Schematic (304CCR Mini Hydraulic Excavator Electrical System).pdf
RENR9647 - Disassembly and Assembly (304C and 305C Mini Hydraulic Excavators Machine Systems).pdf
UENR4045 - Schematic (303C, 303.5C, 303.5D, 303.5E, 304C, 304D, 304E, 305C, 305D, 305E, 305.5D and 305.5E Mini Hydraulic Excavators Air Conditioning System).pdf

TABLE OF CONTENTS / FILE LIST:
RENR9633 - Specifications (304C CR and 305C CR Mini Hydraulic Excavators Machine System)...2
  Blade Lift Cylinder...3
  Boom Cylinder - Swing...4
  Boom Cylinder...5
  Boom...6
  Bucket Cylinder...7
  Bucket Linkage - Bearing and Link Assembly...9
  Bucket Linkage...10
  Bucket Mounting...13
  Cab...14
  Governor Control...15
  Joystick Control...18
  Pilot Valve (Travel)...20
  Recoil Spring...22
  Sprocket...24
  Stick - Long...25
  Stick Cylinder...26
  Stick...27
  Swing Drive...28
  Swing Gear and Bearing...30
  Track...32
  Travel Motor...33
RENR9634 - Systems Operation (304C CR and 305C CR Mini Hydraulic Excavators Hydraulic System) ...35
  Accumulator (Pilot)...36
  Blade Hydraulic System...39
  Boom Hydraulic System...41
  Bucket Hydraulic System...45
  Cylinders (Boom, Stick and Bucket)...47
  Final Drive...50
  General Information...54
  Implements and Swing Controls Alternate Patterns...55
  Main Control Valve...61
  Main Hydraulic Pump...66
  Main Hydraulic System...69
  Pilot Hydraulic System...73
  Pump Control (Main Hydraulic)...76
  Relief Valve (Line)...87
  Relief Valve (Main)...89
  Relief Valve (Pilot)...91
  Return Hydraulic System...92
  Stick Hydraulic System...101
  Swing Boom Hydraulic System...103
  Swing Hydraulic System...108
  Swing Motor...112
  Travel Hydraulic System...122
  Travel Motor...128
  Travel Parking Brake...134
RENR9635 - Testing and Adjusting (304C CR and 305C CR Mini Hydraulic Excavators Hydraulic System)...139
  Accumulator (Pilot) - Test and Charge...140
  Cylinder Drift - Check...152
  Cylinder Speed - Check...157
  Engine Performance - Test - Engine Speed...163
  General Testing and Adjusting Information...164
  Hydraulic System Pressure - Release...166
  Machine Drift on a Slope - Check...167
  Main Hydraulic Pump Air - Purge...170
  Main Pump (Flow) - Test...173
  Operational Checks...206
  Relief Valve (Line) - Test and Adjust...207
  Relief Valve (Main) - Test and Adjust...224
  Relief Valve (Pilot) - Test and Adjust...228
  Relief Valve (Swing) - Test and Adjust...232
  Specifications...239
  Swing Speed and Overswing on Level Ground - Check...242
  Swing Speed and Swing Drift on a Slope - Check...245
  Travel on Level Ground - Test - Optional Test...249
  Travel on Level Ground - Test...251
  Visual Inspection...254
RENR9636 - Schematic (304C CR and 305C CR Mini Excavator Hydraulic System)...255
  Collage...256
  Main...274
    Features...274
    Cover Page...275
    Information...0
      Component Location...0
        Page 1 of 2...276
        Page 2 of 2...277
      Tap Location...278
      Fluid Power Symbols...279
      Electrical Symbols...280
    Schematic...281
    Machine Views...0
      Machine Component Locations...282
      Tap Locations...283
RENR9637 - Disassembly and Assembly (304C and 305C Mini Hydraulic Excavators Engine Supplement)...284
  Alternator - Remove and Install...285
  Battery - Remove and Install...289
  Electric Starting Motor - Remove and Install...292
  Engine - Install...296
  Engine - Remove...308
  Engine Oil Cooler - Remove and Install...319
  Engine Oil Filter and Oil Filter Base - Remove and Install...321
  Fan - Remove and Install...323
  Fuel Filter and Water Separator Base - Remove and Install...326
  Fuel Shutoff Solenoid - Remove and Install...328
  Fuel Transfer and Priming Pump - Remove and Install...332
  Hood - Remove and Install...336
  Hydraulic Oil Cooler - Remove and Install...338
  Hydraulic System Pressure - Release...346
  Muffler - Remove and Install...351
  Radiator - Remove and Install...355
  Refrigerant Compressor - Remove and Install...365
  Refrigerant Condenser - Remove and Install...368
  Refrigerant Receiver-Dryer - Remove and Install...372
  Turbocharger - Remove and Install...374
  Water Pump - Remove and Install...377
  Water Temperature Regulator - Remove and Install...379
RENR9638 - Schematic (304CCR Mini Hydraulic Excavator Electrical System)...381
  Collage...382
  Main...397
    Features...397
    Cover Page...398
    Information...0
      Component Location...399
      Connector Location...400
      Specification and Related Manuals...401
      Standard Electrical...402
    Schematic...403
    Machine Views...0
      Machine Harness Connector and Component Locations...404
      Console Component and Connector Locations...405
RENR9647 - Disassembly and Assembly (304C and 305C Mini Hydraulic Excavators Machine Systems)...406
  Accumulator (Hydraulic Pilot) - Remove and Install...409
  Blade - Remove and Install...412
  Blade Cylinder - Remove and Install...418
  Blower Motor (Air Conditioner, Heater) - Remove and Install...424
  Boom - Install...430
  Boom - Remove...434
  Boom Cylinder - Remove and Install...439
  Bucket - Remove and Install...446
  Bucket Cylinder - Remove and Install...448
  Bucket Linkage - Remove and Install...452
  Cab - Install...457
  Cab - Remove...462
  Control Manifold (Pilot Oil) - Assemble - Hydraulic Lockout, Swing Brake and Travel...468
  Control Manifold (Pilot Oil) - Disassemble - Hydraulic Lockout, Swing Brake and Travel...471
  Control Manifold (Pilot Oil) - Install - Hydraulic Control, Swing Brake and Travel...474
  Control Manifold (Pilot Oil) - Remove - Hydraulic Lockout, Swing Brake and Travel...476
  Counterweight - Remove and Install...478
  Duo-Cone Conventional Seals - Install...486
  Evaporator Coil - Remove and Install...493
  Final Drive and Travel Motor - Assemble...499
  Final Drive and Travel Motor - Disassemble...524
  Final Drive and Travel Motor - Install...537
  Final Drive and Travel Motor - Remove...540
  Front Idler - Remove and Install...543
  Front Idler, Recoil Spring and Hydraulic Track Adjuster - Install...545
  Front Idler, Recoil Spring and Hydraulic Track Adjuster - Remove...546
  Fuel Tank - Remove and Install...547
  Heater Core - Remove and Install...550
  Heating and Air Conditioning Unit - Install...552
  Heating and Air Conditioning Unit - Remove...557
  Hydraulic System Pressure - Release...563
  Hydraulic Tank - Install...568
  Hydraulic Tank - Remove...572
  Hydraulic Track Adjusters - Remove and Install...576
  Load Control Valve (Boom Cylinder) - Remove and Install...579
  Main Control Valve - Assemble...583
  Main Control Valve - Disassemble...597
  Main Control Valve - Install...612
  Main Control Valve - Remove...616
  Main Hydraulic Pump - Assemble...621
  Main Hydraulic Pump - Disassemble...630
  Main Hydraulic Pump - Install...639
  Main Hydraulic Pump - Remove...641
  Pilot Valve (Auxiliary) - Assemble...643
  Pilot Valve (Auxiliary) - Disassemble...645
  Pilot Valve (Auxiliary) - Install...647
  Pilot Valve (Auxiliary) - Remove...650
  Pilot Valve (Blade) - Assemble...653
  Pilot Valve (Blade) - Disassemble...659
  Pilot Valve (Blade) - Install...665
  Pilot Valve (Blade) - Remove...670
  Pilot Valve (Boom Swing) - Assemble...676
  Pilot Valve (Boom Swing) - Disassemble...678
  Pilot Valve (Boom Swing) - Install...680
  Pilot Valve (Boom Swing) - Remove...683
  Pilot Valve (Travel) - Assemble...686
  Pilot Valve (Travel) - Disassemble...698
  Pilot Valve (Travel) - Install...709
  Pilot Valve (Travel) - Remove...712
  Platform - Install...715
  Platform - Remove...722
  Recoil Spring - Remove and Install...728
  Seat - Remove and Install...732
  Selector Valve (Alternate Pattern Control) - Install...734
  Selector Valve (Alternate Pattern Control) - Remove...737
  Sprocket - Remove and Install...740
  Stick - Install...742
  Stick - Remove...745
  Stick Cylinder - Remove and Install...748
  Support (Swing Boom) - Install...752
  Support (Swing Boom) - Remove...759
  Swing Boom Cylinder - Remove and Install...766
  Swing Motor and Swing Drive - Assemble...772
  Swing Motor and Swing Drive - Disassemble...785
  Swing Motor and Swing Drive - Install...799
  Swing Motor and Swing Drive - Remove...802
  Swivel - Assemble...804
  Swivel - Disassemble...809
  Swivel - Install...814
  Swivel - Remove...817
  Track - Remove and Install...820
  Track Carrier Roller - Remove and Install...823
  Track Roller - Remove and Install...825
  Upper Frame and Undercarriage Frame - Connect...828
  Upper Frame and Undercarriage Frame - Separate...835
UENR4045 - Schematic (303C, 303.5C, 303.5D, 303.5E, 304C, 304D, 304E, 305C, 305D, 305E, 305.5D and 305.5E Mini Hydraulic Excavators Air Conditioning System)...843
  Collage...844
  Main...846

Caterpillar Excavators 304C CR, 305C CR Workshop Service Repair Manual