Complete Diagnostics & Test technical manual with Electrical Wiring Diagrams for John Deere 26G Compact Excavator 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.

tm13323x19 - 26G Compact Excavator Technical Manual (Operation & Test).pdf
tm13323x19 - 26G Compact Excavator Technical Manual (Operation & Test).epub

Total Pages: 436 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
Covered Models: 26G (PIN: 1FF026GX**K260001—)

MAIN SECTIONS
 Foreword
   Manual Identification-READ THIS FIRST!
   Technical Information Feedback Form
   General Information
      Safety
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Adjustments
      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
      Diagnostic Information
      Tests

TM13323X19 - Operation & Test Manual (26G Compact Excavator)
Add and Operate Attachments Safely
Add Cab Guarding for Special Uses
All Hydraulic Functions Slow
Alternator Test
Anticavitation Valve Operation
Arm In Function Slow
Arm Regenerative Valve Operation
Auxiliary Function Control Lever Circuit Theory of Operation
Auxiliary Function Lever Harness (W7) Component Location
Auxiliary Function Lever Harness (W7) Wiring Diagram
Auxiliary Function Lever Harness (W7) Wiring Diagram
Auxiliary Pilot Control Valve Operation
Auxiliary Selector Valve Operation
Avoid Backover Accidents
Avoid High-Pressure Fluids
Avoid High-Pressure Oils
Avoid Machine Tip Over
Avoid Static Electricity Risk When Refueling
Avoid Unauthorized Machine Modifications
Avoid Work Site Hazards
Blade and Swing Boom Pilot Control Valve Operation
Blade Circuit Operation
Blade Does Not Move or Moves Slowly
Blade Hydraulic System Line Connections
Boom Light Harness (W9) Component Location
Boom Light Harness (W9) Component Location
Boom Light Harness (W9) Wiring Diagram
Boom Light Harness (W9) Wiring Diagram
Cab Harness (W5) Component Location
Cab Harness (W5) Wiring Diagram
Canopy Light Harness (W15) Component Location
Canopy Light Harness (W15) Wiring Diagram
Canopy Light Harness (W15) Wiring Diagram
Center Joint Operation
Circuit Relief and Anticavitation Valve Operation
Circuit Relief Valve Test and Adjustment
Clean Debris from Machine
Cold Weather Starting Aid
Console Harness (W4) Component Location
Console Harness (W4) Wiring Diagram
Console Harness (W4) Wiring Diagram
Control Lever Pattern Selector Operation
Control Pattern Selector—If Equipped
Control Valve Operation
Control Valve Spool Pilot Actuating Pressure Test
Cylinder Drift Test—Boom, Arm, Bucket, and Blade
Dispose of Waste Properly
Drive Metal Pins Safely
Electrical Component Checks
Electrical Component Checks
Electrical Component Specifications
Electrical Diagram Information
Engine Cooling System Component Location
Engine Fuel System Component Location
Engine Speed Check
Engine Speed Control Lever and Cable Adjustment
Engine Valve Lash (Clearance) Check and Adjustment
Excessive Oil Leakage From Front Idler, Track Rollers, or Carrier Rollers
Explanation of Wire Markings
Floor Harness (W1) Component Location
Floor Harness (W1) Wiring Diagram
Flow Combiner Valve Operation
Follow Safety Instructions
Foreword
Frequent Track Chain Sag Adjustment Required
Front Attachment Inoperable While Traveling
Fuel Shutoff Circuit Test
Fuel Shutoff Circuit Theory of Operation
Fuel Shutoff Circuit Theory of Operation
Function Does Not Stop When Control Lever Released
Fuse and Relay Specifications
Fuse and Relay Specifications
General Hydraulic Oil Cleanup Procedure
Handle Chemical Products Safely
Heater Component Location
Heater Operational Checks
Heating System Does Not Operate
Heating System Does Not Warm Interior of Cab
High-Altitude Solenoid Controller Circuit Theory of Operation
Hydraulic Component Failure Cleanup Procedure
Hydraulic Cylinder Operation
Hydraulic Oil Overheats
Hydraulic Oil Tank Pressure Release Procedure
Hydraulic Pump 1, 2, and 3 Main Relief Valve Test and Adjustment
Hydraulic Pump 1 and 2 Flow Test
Hydraulic Pump 1 and 2 Operation
Hydraulic Pump 3 Flow Test
Hydraulic Pump 3 Operation
Hydraulic Pump Regulator Operation
Hydraulic System Component Location
Hydraulic System Diagram
Hydraulic System Line Connections
Hydraulic System Pilot Line Connections
Hydraulic System Schematic
Hydraulic System Warm-Up Procedure
In Case of Machine Fire
Individual Undercarriage Component Wear
Inspect and Maintain ROPS
Inspect Machine
JT02156A Digital Pressure and Temperature Analyzer Kit Installation
JT05800 Digital Thermometer Installation
JT05801 Clamp-On Electronic Tachometer Installation
Keep Riders Off Machine
Load Drifts Down When Control Lever is in Neutral Position
Load Falls When Control Valve is Actuated to Raise Load
Machine Mistracks
Machine Will Not Shift Into Fast (Rabbit) Speed
Main Harness (W8) Component Location
Main Harness (W8) Wiring Diagram
Main Relief Valve Operation
Make Welding Repairs Safely
Manual Identification—READ THIS FIRST!
Measure Swing Bearing Wear
Monitor Panel Circuit Theory of Operation
Monitor Panel Circuit Theory of Operation
No Hydraulic Functions
No Hydraulic Functions—Electrical Checks
Noisy or Loose Track Chain
Operate Only If Qualified
Operational Checkout
Park and Prepare for Service Safely
Pilot Control Valve Operation
Pilot Pressure Regulating Valve Operation
Pilot Pressure Regulating Valve Test and Adjustment
Pilot Pump and Filter Operation
Pilot Shutoff Circuit Theory of Operation
Pilot Shutoff Solenoid Valve Operation
Pilot System Operation
“Popping” of Track
Prepare for Emergencies
Prevent Acid Burns
Prevent Battery Explosions
Prevent Fires
Prevent Unintended Machine Movement
Recognize Safety Information
Relay Test
Relay Test
Remove Paint Before Welding or Heating
Return Filter Operation
Safety and Operator Convenience Features
Safety Signs and Other Instructions
Service Cooling System Safely
Solenoid Valve Manifold Operation
Starting and Charging Circuits Theory of Operation
Starting and Charging Circuits Theory of Operation
Start Only From Operator's Seat
Stay Clear of Moving Parts
Swing Boom Does Not Move or Moves Slowly
Swing Function Does Not Operate in Both Directions
Swing Motor Crossover Relief Valve Operation
Swing Motor Crossover Relief Valve Test and Adjustment
Swing Motor Leakage Test
Swing Motor Make-Up Check Valve Operation
Swing Motor Operation
Swing Motor Park Brake Release Circuit Operation
Swing Reduction Gear Case Operation
Swing Speed Slow in Both Directions
Swing Speed Slow or Does Not Operate in One Direction
System Functional Schematic
System Functional Schematic
System Functional Schematic, Wiring Diagrams, and Component Locations Master Legend
Technical Information Feedback Form
Tight Track Chain
Torque Control Solenoid Valve Operation
Track Adjuster and Recoil Spring Operation
Track Will Not Move in Either Direction
Travel Gear Case Operation
Travel Hydraulic System Line Connections
Travel Motor and Park Brake Valve Operation
Travel Motor Leakage Test
Travel Pilot Control Valve Operation
Travel Safely
Travel Speed Control and Alarm Circuit Theory of Operation
Travel Speed Solenoid Valve Operation
Use and Maintain Seat Belt
Use Special Care When Lifting Objects
Use Steps and Handholds Correctly
Wear Protective Equipment
Windshield Wiper Extension Harness (W16) Component Location
Windshield Wiper Extension Harness (W16) Wiring Diagram
Windshield Wiper Harness (W17) Component Location
Windshield Wiper Harness (W17) Wiring Diagram
Windshield Wiper Harness (W17) Wiring Diagram
Work In Ventilated Area
Yanmar Engine

tm13323x19 - 26G Compact Excavator

Table of Contents

Foreword

Manual Identification—READ THIS FIRST!

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

Control Pattern Selector—If Equipped

Add Cab Guarding for Special Uses

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Avoid High-Pressure Oils

Work In Ventilated Area

Avoid Static Electricity Risk When Refueling

Prevent Fires

In Case of Machine Fire

Prevent Battery Explosions

Handle Chemical Products Safely

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Prepare for Emergencies

Clean Debris from Machine

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

Inspect and Maintain ROPS

Travel Safely

Prevent Acid Burns

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

Yanmar Engine

Engine Fuel System Component Location

Engine Cooling System Component Location

Cold Weather Starting Aid

Engine Speed Control System Operation

Group 15: Diagnostic Information

Yanmar Engine

Group 20: Adjustments

Engine Valve Lash (Clearance) Check and Adjustment

Engine Speed Check

Engine Speed Control Lever and Cable Adjustment

Group 25: Tests

Yanmar Engine

JT05801 Clamp-On Electronic Tachometer Installation

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Group 10: System Diagrams

Explanation of Wire Markings

Fuse and Relay Specifications

System Functional Schematic, Wiring Diagrams, and Component Locations Master Legend

System Functional Schematic

Floor Harness (W1) Component Location

Floor Harness (W1) Wiring Diagram

Console Harness (W4) Component Location

Console Harness (W4) Wiring Diagram

Cab Harness (W5) Component Location

Cab Harness (W5) Wiring Diagram

Auxiliary Function Lever Harness (W7) Component Location

Auxiliary Function Lever Harness (W7) Wiring Diagram

Main Harness (W8) Component Location

Main Harness (W8) Wiring Diagram

Boom Light Harness (W9) Component Location

Boom Light Harness (W9) Wiring Diagram

Canopy Light Harness (W15) Component Location

Canopy Light Harness (W15) Wiring Diagram

Windshield Wiper Extension Harness (W16) Component Location

Windshield Wiper Extension Harness (W16) Wiring Diagram

Windshield Wiper Harness (W17) Component Location

Windshield Wiper Harness (W17) Wiring Diagram

Group 15: Sub-System Diagnostics

Starting and Charging Circuits Theory of Operation

Fuel Shutoff Circuit Theory of Operation

High-Altitude Solenoid Controller Circuit Theory of Operation

Monitor Panel Circuit Theory of Operation

Pilot Shutoff Circuit Theory of Operation

Travel Speed Control and Alarm Circuit Theory of Operation

Auxiliary Function Control Lever Circuit Theory of Operation

Group 20: References

Electrical Component Specifications

Alternator Test

Relay Test

Fuel Shutoff Circuit Test

Electrical Component Checks

Section 9020: Power Train

Group 05: Theory of Operation

Track Adjuster and Recoil Spring Operation

Travel Gear Case Operation

Group 15: Diagnostic Information

Noisy or Loose Track Chain

Tight Track Chain

Frequent Track Chain Sag Adjustment Required

Excessive Oil Leakage From Front Idler, Track Rollers, or Carrier Rollers

“Popping” of Track

Individual Undercarriage Component Wear

Measure Swing Bearing Wear

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Diagram

Pilot System Operation

Pilot Pump and Filter Operation

Solenoid Valve Manifold Operation

Pilot Shutoff Solenoid Valve Operation

Travel Speed Solenoid Valve Operation

Pilot Pressure Regulating Valve Operation

Pilot Control Valve Operation

Travel Pilot Control Valve Operation

Blade and Swing Boom Pilot Control Valve Operation

Auxiliary Pilot Control Valve Operation

Control Lever Pattern Selector Operation

Torque Control Solenoid Valve Operation

Hydraulic Pump 1 and 2 Operation

Hydraulic Pump Regulator Operation

Hydraulic Pump 3 Operation

Control Valve Operation

Main Relief Valve Operation

Circuit Relief and Anticavitation Valve Operation

Anticavitation Valve Operation

Flow Combiner Valve Operation

Arm Regenerative Valve Operation

Swing Reduction Gear Case Operation

Swing Motor Operation

Swing Motor Crossover Relief Valve Operation

Swing Motor Make-Up Check Valve Operation

Swing Motor Park Brake Release Circuit Operation

Center Joint Operation

Travel Motor and Park Brake Valve Operation

Blade Circuit Operation

Auxiliary Selector Valve Operation

Hydraulic Cylinder Operation

Return Filter Operation

Group 15: Diagnostic Information

All Hydraulic Functions Slow

Hydraulic Oil Overheats

No Hydraulic Functions

No Hydraulic Functions—Electrical Checks

Function Does Not Stop When Control Lever Released

Load Drifts Down When Control Lever is in Neutral Position

Load Falls When Control Valve is Actuated to Raise Load

Front Attachment Inoperable While Traveling

Arm In Function Slow

Swing Function Does Not Operate in Both Directions

Swing Speed Slow in Both Directions

Swing Speed Slow or Does Not Operate in One Direction

Track Will Not Move in Either Direction

Machine Mistracks

Machine Will Not Shift Into Fast (Rabbit) Speed

Blade Does Not Move or Moves Slowly

Swing Boom Does Not Move or Moves Slowly

Hydraulic System Component Location

Hydraulic System Pilot Line Connections

Hydraulic System Line Connections

Blade Hydraulic System Line Connections

Travel Hydraulic System Line Connections

Hydraulic System Schematic

Group 25: Tests

General Hydraulic Oil Cleanup Procedure

Hydraulic Component Failure Cleanup Procedure

JT05800 Digital Thermometer Installation

JT02156A Digital Pressure and Temperature Analyzer Kit Installation

Hydraulic Oil Tank Pressure Release Procedure

Hydraulic System Warm-Up Procedure

Pilot Pressure Regulating Valve Test and Adjustment

Control Valve Spool Pilot Actuating Pressure Test

Hydraulic Pump 1, 2, and 3 Main Relief Valve Test and Adjustment

Circuit Relief Valve Test and Adjustment

Swing Motor Crossover Relief Valve Test and Adjustment

Hydraulic Pump 1 and 2 Flow Test

Hydraulic Pump 3 Flow Test

Swing Motor Leakage Test

Travel Motor Leakage Test

Cylinder Drift Test—Boom, Arm, Bucket, and Blade

Section 9031: Heating

Group 15: Diagnostic Information

Heating System Does Not Operate

Heating System Does Not Warm Interior of Cab

Heater Component Location

Group 25: Tests

Heater Operational Checks

John Deere 26G Compact Excavator Operation & Test Technical Manual (TM13323X19)