Ford 550 Tractor Loader Backhoe (1975) Parts Catalog (P/N FTO-17242)

This Ford Tractor Operations parts catalog covers the 1975 Ford 550 Tractor Loader Backhoe. The July 1975 edition (P/N FTO-17242) organizes chassis, powertrain, hydraulic, and attachment parts into 19 sections, with application notes for gasoline and diesel configurations and for U.S. and FTO-E equipment.

PDF Navigation and Included Pages

Using the scanned catalog. Use the printed contents and numerical parts index to locate entries. The PDF has no searchable text or embedded bookmarks. Zoom in to read small callout numbers in dense illustrations.

The catalog comes as one printable, English-language PDF with 388 pages, including the original cover, one general-information page, one master contents page, the 12-page numerical index, and 40 pages with only running headers, footers, or borders.

Tractor, Loader, and Backhoe Parts

This selection of catalog contents focuses on the main assemblies. The catalog also lists front and rear wheel weights and decal sets.

• Engine and fuel system: Cylinder head, valve train, pistons, and lubrication parts, with separate listings for gasoline carburetion, diesel injection, and cooling components.
• Transmission and rear axle: Case, gears, and clutch components for the manual reversing and torque converter transmissions, plus differential parts and differential-lock linkage.
• Hydraulics and steering: Pump, filter, reservoir, cooler, and hose listings, along with control-valve breakdowns and views of the power steering motor, column, and cylinders.
• Loader and backhoe: Lift arms, bucket linkage, cylinders, and repair kits, with separate parts entries for center-pivot, side-shift, and Automatic Dig equipment.
• Electrical components: Harness and component layouts for starting, charging, lighting, and instrument-panel parts, with separate U.S. and FTO-E applications.
• Chassis and cab: Front axle, wheels, brake pedals and linkage, frame, seats, sheet metal, grille, and cab illustrations with corresponding parts lists.

The catalog suits mechanics and experienced owners who can identify the assembly on their machine and need the correct parts before starting a repair.

How to Look Up and Order Parts

Match the numbered callout in an exploded view to the corresponding parts-list entry for the full part number, quantity, and application remarks. If you already have a number, use its basic number in the numerical index to locate the listing, then use the full number from that listing when ordering. Repair-kit entries identify included components and indicate which items are unavailable separately.

For repair procedures, troubleshooting, wiring circuit schematics, torque specifications, and fluid capacities, consult the applicable service manual. The electrical illustrations here show harnesses and component locations for parts identification.

Engine, Fuel, and Cooling Variants

The engine listings distinguish standard, oversize, and undersize replacement parts where applicable. The fuel injection pump illustration identifies internal pump components, and the filter listings separate CAV and Simms assemblies. Radiator entries distinguish versions with and without an oil cooler. The water pump has separate assembly and repair-kit listings.

Transmission and Rear-Axle Parts

The 6 x 4 manual reversing transmission has dedicated gear and clutch-control breakdowns. For the torque converter transmission, the catalog shows the oil distributor and pump, with separate listings for the clutch and gears, filter, and cooler tubes. Rear-axle entries distinguish standard, high-ratio, and handbrake applications and identify matched gear sets and selective-fit spacers.

Loader Controls, Backhoe Options, and Cab Parts

Loader listings distinguish two-spool and three-spool valves, including Return-to-Dig and Hydro Bucket applications. The lift-cylinder breakdown identifies individual internal parts and repair-kit contents. Backhoe listings distinguish mechanical and hydraulic side-shift carriage clamps and show the Automatic Dig sequencing valve.

Cab drawings identify glazing, panels, heaters, and wipers. Seat listings distinguish deluxe and industrial swivel assemblies.

Parts Selection Example

The crankshaft parts list includes main thrust bearing liner kits for 0.010 in. and 0.020 in. undersize, among other sizes. Each kit contains an upper and a lower liner. Use the size entry to identify the corresponding kit in the parts list.