John Deere 770A 770AH 772A 772AH Motor Graders Technical Manual TM1361

What's Covered in This Manual

This is the official John Deere TM-1361 Technical Manual for the 770A, 770AH, 772A, and 772AH Motor Graders, published in May 1987 as a revision of an earlier manual, TM-1187. All four model designations are confirmed present throughout the manual, with the 772A and 772AH variants referenced most frequently.

The manual opens with general information before moving into full component coverage, including detailed hydraulic pump service - the pump housing, oil pump internal and external gears, and bushing and seal specifications are documented with exact bore depth tolerances for both early and later production units, a detail that matters for anyone rebuilding a pump on one of these graders decades after production. Beyond the hydraulic pump, the manual covers the engine, power train, steering, brakes, and electrical systems used across this four-model grader lineup.

Because the 770AH and 772AH designations typically indicate all-wheel-drive variants of the base 770A and 772A models, this manual documents the driveline differences specific to those configurations alongside the standard repair coverage shared across all four graders. Whether you're rebuilding a hydraulic pump, servicing the driveline, or doing engine work on any grader in this lineup, this manual provides the complete factory repair procedures.

Table of Contents

• General Information - Contents and Index
• Engine - Specifications and repair procedures
• Hydraulic System - Pump housing, gears, specifications (early and later production units)
• Power Train - Transmission and driveline repair, including AH all-wheel-drive variants
• Steering and Brakes - Service and repair procedures
• Electrical System - Wiring and component service