John Deer 135g Excavator Diagnostic, Operation Test Service Manual
This Deer 135g (it4) Excavator Diagnostic, Operation And Test Service Manual TM12666 contains high quality images, diagrams, instructions to help you to operate, maintenance, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.
Section Summary
| Category | Covered Topics |
|---|---|
| Foreword and Feedback | Manual introduction, feedback form |
| General | Safety information |
| Diagnostics | DTCs for MCZ, ECU, DSZ, ACF controllers |
| Operational Checkout | System verification procedures |
| Engine | Adjustments and calibrations |
| Electrical | Diagrams, diagnostics, monitor operation, references |
| Power Train | Drivetrain diagnostics |
| Hydraulics | Theory, diagnostics, testing |
| HVAC | Heating and air conditioning service |
| Tools | Dealer-fabricated service tools |
John Deer 135g Excavator Service Repair Manual – TM12669

Whether your work is urban renewal, street repair, or underground utilities, the 135G and 245G LC deliver legendary performance. Durable EPA Final Tier 4 (FT4)/EU Stage IV diesels meet rigid emission regulations, so you can work, everywhere there’s work without compromising power, reliability, or ease of operation.
Covered models (S.N. 1FF135GX__E400001-):
135G
Table of Contents – Service Manual
Foreword
- About This Manual
Technical Information Feedback Form
- User Feedback and Documentation Updates
General Information
- Safety Precautions
Diagnostics and Troubleshooting
- Main Controller (MCZ) Diagnostic Trouble Codes
- Engine Control Unit (ECU) Diagnostic Trouble Codes
- Monitor Controller (DSZ) Diagnostic Trouble Codes
- Air Conditioner Controller (ACF) Diagnostic Trouble Codes
Operational Checkout Procedure
- System Operational Verification
Engine System
- Adjustments and Calibrations
Electrical System
- System Information
- System Diagrams
- Sub-System Diagnostics
- Monitor Operation
- Reference Materials
Power Train System
- Drivetrain Diagnostics and Service
Hydraulic System
- Theory of Operation
- Diagnostic Information
- Performance Tests
Heating and Air Conditioning (HVAC)
- Climate Control System Service
Dealer Fabricated Tools
John Deer 135g Excavator Diagnostic Operation





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