Eaton Fuller Heavy Duty Transmissions Troubleshooting Guide

About this manual

This service manual provides step-by-step troubleshooting procedures for Eaton Fuller heavy-duty transmissions. It covers fault code retrieval and clearing, diagnostic tests, and symptom-driven isolation methods. The guide includes electrical and pneumatic pretests, component-specific diagnostics, and wiring diagrams for various shift lever configurations. It is intended for technicians performing maintenance and repair on these transmissions.

What's inside

• Fault Codes Retrieval/Clearing
• Driving Techniques
• Fault Code Isolation Procedure Index
• Electrical Pretest
• Pneumatic Pretest
• Transmission Basic Inputs Pretest
• Engine Interface Pretest
• Symptom Driven Diagnostics
• Wiring Diagrams
• Adjustment Procedures

Frequently asked questions

How do I retrieve active fault codes?

Place the shift lever in neutral, set the parking brake, turn the ignition key on, then turn the key off and on two times within five seconds ending with the key in the on position.

How do I clear inactive fault codes?

Place the shift lever in neutral, set the parking brake, turn the ignition key on, then turn the key off and on six times within five seconds ending with the key in the on position.

What tools are suggested for diagnostics?

Suggested tools include 0-300 PSI and 0-100 PSI hydraulic gauges, 0-100 PSI air gauge, and MPSI Pro-link Main diagnostic tool.