John Deere 6820 6920 6920S Tractors Repair Technical Manual TM4756

What's Covered in This Manual

This is the official John Deere TM4756 Repair Technical Manual for the 6820, 6920, and 6920S Tractors. The manual's foreword confirms it is valid for exactly these three tractor types and is written for experienced customer service personnel - this is the repair half of John Deere's standard three-manual system for this tractor family, covering full component disassembly and reassembly rather than diagnostics or routine operation.

Inside you'll find the complete repair procedures for the engine, power train, hydraulics, electrical system, and steering on these tractors, with torque specifications, wear tolerances, and special tool callouts throughout. The manual cross-references several companion publications for complete service coverage: TM4741 for Operation and Tests, TM4726 for Diagnostics, CTM4687 for Front Wheel Drive Axles, CTM104 for POWERTECH Diesel Engines, and CTM207/CTM170 for mechanical and electronic fuel injection systems respectively.

Whether you're doing a routine repair, a transmission rebuild, or a full engine overhaul on a 6820, 6920, or 6920S, this manual provides the same factory-level procedures a John Deere technician would use, and all three model designations are confirmed throughout the manual body with over a thousand references each.

Table of Contents

• Section 10 - Safety
• Section 20 - Specifications and Information
• Section 30 - Engine - Diesel - repair procedures
• Section 40 - Electrical - component service and wiring
• Power Train - Transmission and driveline repair
• Front-Wheel Drive Axles - Service procedures
• Hydraulics - Specifications, schematics, repair
• Steering - Diagnostics, tests, repair