Caterpillar 303 CR Mini Hydraulic Excavator Workshop Repair Service Manual PDF - MCAT303COPES.zip

A full workshop service and repair guide for the Caterpillar 303 CR Mini Hydraulic Excavator, featuring Electrical Wiring Diagrams and every technical detail needed to service, troubleshoot, fix, and rebuild the machine the way professional technicians do.

The Caterpillar 303 CR Mini Hydraulic Excavator workshop service and repair manual contains:

* 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