1979 John Deere JD500-C Loader Backhoe Technical Manual TM-1038

1979 John Deere JD500-C Technical Manual | OEM TM-1038

Built specifically for heavy-equipment owners and professional repair shops, this official OEM reference delivers the exact factory data needed to service the 1979 John Deere JD500-C Loader Backhoe. It provides the precise system diagnostics and teardown specs to get your machine back in the dirt.

• Instant Digital Download: Delivered straight to your device the second payment clears so you can get right to work.
• 435 Pages of Shop Data: TM-1038 (October 1979 edition) covers standard and variant builds, packed with exploded-view assembly diagrams, hydraulic circuit pressure limits, and full electrical wiring schematics.
• Fully Searchable OCR Text: Stop flipping through endless pages. Jump straight to a specific torque spec or wiring trace by keyword.
• Workbench Ready: Got greasy hands? Print only the sections you need, take them to the bay, and toss them when the job is done. Keeps your digital master file clean.

Manual Content & System Coverage

Guessing costs time and money. This manual organizes the JD500-C platform into eight logical sections to streamline your troubleshooting. It kicks off with general machine specs, predelivery service, and the exact separation procedures for the backhoe, loader, and final drives.

If you are digging into the 4-cylinder diesel engine, you will find comprehensive diagnostic breakdowns for the fuel system, lubrication, cooling loops, and the engine balancer assembly. Moving down the driveline, the manual documents both collar-shift and power-shift transmission configurations, alongside steering and braking mechanisms. For fluid power issues, the hydraulics section features extensive tear-down data on control valves, cylinders, and accurate system testing methods to trace pressure drops.

Specification Highlights

Knowing your baseline numbers prevents costly comebacks. The JD500-C power system grosses at 83 hp, while the manual lists standard hydraulic system pressure at 2350 psi. Buttoning up the top end? You will find the exact multi-stage cylinder head bolt sequence mapped out, with final torques specified at 115–135 ft-lbs.

Other essential specs include a 10 gpm transmission pump flow for power-shift units (at 1900 rpm) and a 19-quart cooling system capacity.

A quick note on shop safety: Heavy machinery operates under immense load, and high-pressure hydraulic circuits pose serious risks. While these highlighted specs provide a quick baseline, always cross-reference the complete step-by-step procedures in this OEM manual. Ensure proper depressurization and follow factory-approved methods before turning a wrench to guarantee a safe working environment.