Complete Operation and Test manual with Electrical Wiring Diagrams for John Deere 80C Excavator, with all the workshop information to maintain, diagnose, and service like professional mechanics.

 John Deere 80C Excavator workshop diagnostics 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.

TM1938 - John Deere 80C Excavator Technical Manual - Operation and Test.PDF
TM1938 - John Deere 80C Excavator Technical Manual - Operation and Test.epub

Total Pages: 534 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
Foreword
   Technical Information Feedback Form
   General Information
      Safety
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics
      References
   Power Train
      Theory of Operation
      Diagnostic Information
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Tests
   Heating and Air Conditioning
      Theory Of Operation
      Diagnostic Information
      Tests

tm1938 - 80C Excavator

Table of Contents

Foreword

Technical Information Feedback Form

Section 9000: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Add Cab Guarding for Special Uses

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Oils

Beware of Exhaust Fumes

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Dispose of Waste Properly

Prepare for Emergencies

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Avoid Work Site Hazards

Keep Riders Off Machine

Avoid Backover Accidents

Avoid Machine Tip Over

Use Special Care When Lifting Objects

Add and Operate Attachments Safely

Park and Prepare for Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

Engine Component Location

Engine Fuel System Operation

Engine Cooling System Operation

Engine Lubrication System Operation

Engine Speed Control System Operation

Group 15: Diagnostic Information

Diagnose Engine Malfunctions

Group 25: Tests

JT05801 Clamp-On Electronic Tachometer Installation

Engine Speed Test and Adjustment

Engine Learning Procedure

Check Fuel Injection Nozzle

Check and Adjust Injection Pump Timing

Check and Adjust Engine Valve Lash (Clearance)

Engine Compression Pressure Test

Air Filter Restriction Indicator Switch Test

Fuel Line Leakage Test

Engine Fuel Shutoff Adjustment

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Group 10: System Diagrams

Explanation of Wire Markings

Fuse Specifications

Functional Schematic, Wiring Diagram, and Component Location Master Legend

System Functional Schematic

Cab Harness (W1) Component Location

Cab Harness (W1) Wiring Diagram

Engine Harness (W2) Component Location

Engine Harness (W2) Wiring Diagram

Console Harness (W3) Component Location

Console Harness (W3) Wiring Diagram

12 Volt Power Converter Harness (W5) Component Location

12 Volt Power Converter Harness (W5) Wiring Diagram

Heater Harness (W6) Component Location

Heater Harness (W6) Wiring Diagram

Air Conditioner Harness (W7) Component Location

Air Conditioner Harness (W7) Wiring Diagram

Group 15: Sub-System Diagnostics

Starting and Charging Circuit Theory of Operation

Monitor Controller and Display Circuit Theory of Operation

Engine Control Circuit Theory of Operation

Propel Alarm Circuit Theory of Operation

Pump and Valve Controller Circuit Theory of Operation

Windshield Wiper and Washer Circuit Theory of Operation

Group 20: References

Monitor Data Items

Reading Pump and Valve Controller Diagnostic Trouble Codes Without Laptop Computer

Pump and Valve Controller Diagnostic Trouble Codes

Diagnostic Trouble Code 01—EEPROM Malfunction

Diagnostic Trouble Code 02—RAM Malfunction

Diagnostic Trouble Code 03—Analog/Digital Conversion Malfunction

Diagnostic Trouble Code 04—Sensor Voltage Malfunction

Diagnostic Trouble Code 07—Engine RPM Dial Malfunction

Diagnostic Trouble Code 18—Propel Pressure Sensor Malfunction

Monitor Controller And Display Diagnostic System Operation

Alternator Test Procedure

Fuse Test

Relay Test

Pressure Sensor Test

Solenoid Test

Temperature Sensor Test

Electrical Component Checks

Pump and Valve Controller Remove and Install

Machine Information Center Remove and Install

Battery Remove and Install

Propel Alarm Cancel Switch Remove and Install

Key Switch Remove and Install

Propel Alarm Remove and Install

Rear Cover Remove and Install

Switch Panel (A4) Remove and Install

Monitor Controller and Display (A5) Remove and Install

Disconnect Tab Retainer Connectors

Disconnecting Spring Wire Clip Connectors

Replace DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Connectors

Install DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Contacts

Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector

Install WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Contacts

Remove Connector Body from Blade Terminals

Section 9020: Power Train

Group 05: Theory of Operation

Track Adjuster and Recoil Spring Operation

Propel Gearbox Operation

Group 15: Diagnostic Information

Diagnose Undercarriage Components Malfunctions

Measure Swing Bearing Wear

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Diagram and Operation

Pilot System Diagram and Operation

Pilot Pump, Pressure Regulating Valve, and Filter Operation

Pilot Control Shut-Off Valve Operation

Pilot Controller Operation

Blade Pilot Controller Operation

Offset Boom Pilot Controller Operation

Propel Pilot Controller Operation

Flow Regulator Valve Manifold Operation (S.N. —011047)

Flow Regulator Valve Manifold Operation (S.N. 011048— )

Hydraulic Pump 1, 2, And 3 Operation

Hydraulic Pump Regulator Operation

Control Valve Operation

System Relief Valve Operation

Circuit Relief and Anti-Cavitation Valve Operation

Propel Flow Combiner Valve Operation

Auxiliary Flow Combiner Valve Operation

Boom Reduced Leakage Valve Operation

Propel and Arm In Combined Operation

Swing and Boom Up Combined Operation

Swing Gearbox Operation

Swing Motor, Crossover Relief, and Make-Up Valve Operation

Swing Motor Park Brake Release Circuit Operation

Blade Circuit Operation

Offset Boom Circuit Operation

Rotary Manifold Operation

Propel Motor and Valve Housing Operation

Propel Motor Speed Circuit Operation

Hydraulic Cylinder Operation

Hydraulic System Circuit Symbols

Hydraulic System Schematics

Group 15: Diagnostic Information

Diagnose Hydraulic System Malfunctions

Diagnose Pilot Circuit Malfunctions

Diagnose Dig Circuit Malfunctions

Diagnose Swing Circuit Malfunctions

Diagnose Propel System Malfunctions

Control Valve Line Identification

Swing Motor Line Identification

Hydraulic Pump 1, 2, 3, And Pilot Pump Line Identification

Propel And Blade Hydraulic System Line Connection

Pilot Controllers-to-Flow Regulator Valve Manifold Line Connection-Excavator and Backhoe Patterns (S.N. 011048— )

Flow Regulator Valve Manifold And Bulkhead-to-Control Valve Line Connection (S.N. 011048— )

Standard Boom Hydraulic System Line Connection

Offset Boom Hydraulic System Line Connection

Group 25: Tests

JT05800 Digital Thermometer Installation

JT02156A Digital Pressure/Temperature Analyzer Installation

Hydraulic System Warm-Up Procedure

Cylinder Drift Test—Arm, Boom, Bucket and Blade

Pilot Pressure Regulating Valve Test and Adjustment

Control Valve Spool Actuating Pilot Pressure Test

Hydraulic Pump 1 and 2 System Relief Valve Test and Adjustment

Hydraulic Pump 3 System Relief Valve Test and Adjustment

Circuit Relief Valve Test and Adjustment

Swing Motor Crossover Relief Valve Test and Adjustment

Propel Motor Crossover Relief Valve Test and Adjustment

Propel Speed Solenoid Valve Test and Adjustment

Hydraulic Pump 1, 2, And 3 Test and Adjustment—Engine Pulldown

Hydraulic Pump 1, 2, And 3 Flow Test and Adjustment

Swing Motor Leakage Test

Propel Motor Leakage Test

Section 9031: Heating and Air Conditioning

Group 05: Theory Of Operation

Air Conditioning System Cycle Of Operation

Group 15: Diagnostic Information

Diagnose Air Conditioning System Malfunctions

Diagnose Heater System Malfunctions

Air Conditioning Diagnostic Trouble Code Check

Heating and Air Conditioning Component Location Diagram

Group 25: Tests

Heating and Air Conditioning System Checks

R134a Air Conditioning System Test

Air Conditioning Compressor Clutch Test

Refrigerant Leak Test

Refrigerant Hoses and Tubing Inspection

Air Conditioner Compressor Belt Test and Adjust

John Deere 80C Excavator Operation and Test Service Manual (TM1938)