Ford 550/555 Tractor Backhoe Loader Service Manual

Ford 550 and 555 Backhoe Loader Technical Coverage

• Covers the 1975–1981 Ford 550 and 555 tractor-loader-backhoe models, documenting both diesel and gasoline engine configurations
• Official Ford Tractor Operations publication PN C4077-90960, covering procedures established from 1975 through 1981 production runs
• Contains 97 pages of technical information including exploded-view diagrams of fuel systems, engine components, and specialized tooling
• Files are delivered as a direct download the moment payment clears
• Stored against your account so you can retrieve it after a hard-drive loss
• Full-text search finds any part number in seconds
• Laid out for standard letter and A4 printing
• This 1978-present edition serves as the foundational service reference for the 550 and 555 series engine and fuel system maintenance

Engine System and Fuel Documentation

The 1975–1981 Ford 550 and 555 service manual provides technical data on overhaul and maintenance for diesel and gasoline engines. The publication outlines procedures for cylinder head disassembly, valve train inspection, and piston ring replacement, utilizing exploded views to illustrate component orientation. It details lubrication system operation, including rotor-type oil pump function and main gallery oil flow. Additionally, the manual describes cooling system service, with specific guidance on water pump assembly modifications implemented for units built after 3/23/81.

Specification Highlights

Engine specifications are documented for both fuel types, listing compression ratios, bore/stroke dimensions, and torque sequences for assembly. Injector maintenance includes detailed testing parameters for nozzle opening pressure and spray pattern verification. Understand how factory workshop documentation is structured to facilitate maintenance accuracy and component longevity. Rated torque for main bearing bolts is documented at 115–125 lb. ft. (156–159 Nm). Diesel compression pressure is listed at 340 ± 50 psi at 200 rpm in the specification table. Valve stem-to-guide clearance for intake valves is specified at 0.0010–0.0027 in. (0.025–0.069 mm).

An official Ford OEM workshop manual covering the 1975–1981 Ford 550 and 555, documenting engine, cooling, fuel injection, and technical service specifications for the tractor-loader-backhoe series.