1983-1987 John Deere 450D & 455D Technical Manual (P/N TM-1291)

Official John Deere 450D and 455D Technical Manual (1983–1987)

This 906-page OEM publication (TM-1291, October 1987 revision) is the definitive technical reference for the 1983–1987 John Deere 450D Crawler Bulldozer and 455D Crawler Loader. Documenting engine, hydraulic, transmission, and electrical systems for serial numbers 390307 and above, this edition incorporates updated steering pedal configuration data and expanded service procedures.

Manual Features & Accessibility

• Documents the 1983–1987 John Deere 450D Crawler Bulldozer and 455D Crawler Loader, detailing all drivetrain, chassis, and steering configurations.
• Contains 47 exploded-view diagrams, 12 electrical schematics, and 8 comprehensive torque-specification tables.

Component and Systems Documentation

This workshop manual outlines the mechanical systems of both the crawler bulldozer and crawler loader variants. Sections focus on track systems, detailing track chain removal, master pin diagnostics, and tension adjuster maintenance. Powertrain coverage spans the engine, transmission, and final drive assembly, alongside specialized groups for steering clutches and brake bands. Chassis documentation details frame integrity, operator station enclosures, and drawbar attachments.

Technical Reference and Maintenance Data

This publication supplies essential identification and maintenance values to support ongoing equipment upkeep. Torque values for standard cap screws are categorized by Grade B, D, and F hardware. Specific service data outlines final drive lubrication requiring 5.9 liters of fluid per side, while the steering clutch housing oil capacity is listed at 26.5 liters. Cylinder head bolt torque specifications are clearly defined in the engine section. Additionally, steering clutch and brake system maintenance is supported by precise adjustment tables, and the electrical system chapters detail battery support, alternator specifications, and wiring harness routing. As heavy machinery maintenance involves significant operational risks, reviewing these technical specifications alongside a certified technician is strongly advised prior to initiating any service work.