1975–1981 Ford 5600, 5700, 6600, 6700, 7600 and 7700 Agricultural Tractor Parts Catalog

Get the part numbers you need for your 4-cylinder Ford agricultural tractor built between 1975 and 1981. This parts catalog is indexed under the 5600, with shared illustrated listings for the 5700, 6600, 6700, 7600 and 7700. Applicability varies by figure and component.

Search and illustration detail: Parts tables and figure headings are searchable; callout numbers embedded in the drawings are not. Bookmarks lead to the index, parts section and reference appendices. Small electrical-illustration callouts are best read enlarged.

• Engine and fuel system: Component breakdowns for cylinder blocks and heads, crankshafts, camshafts, flywheels, oil pumps, injectors, and rotary and inline injection pumps.

• Transmission and PTO: Parts identification for 7- and 8-speed transmissions, Dual Power assemblies, reduction gearboxes, clutches, and single- and two-speed power take-off units.

• Axles and steering: Manual and power steering assemblies, FWD differential carriers, self-locking differentials, planetary hub drives, transfer boxes and rear axle components.

• Hydraulics: Lift covers, lift shafts with and without Load Monitor, control valves, center-housing hydraulic pumps, assistor rams and remote cylinder kits.

• Brakes: Exploded parts views for brake discs and controls, cab-specific pedal linkage, transmission handbrakes and hydraulic trailer brake systems.

• Electrical equipment: Starting motors, alternators, instrument clusters, main and cab harnesses, rear wiring, and implement lamp assemblies with corresponding parts lists.

• Wheels and cab: Front wheels, standard and power-adjustable rear wheels, dual power-adjustable arrangements, wheel and wafer weights, flat-top fenders, tractor cabs and A/C components.

The catalog suits mechanics and experienced owners who can identify the tractor's equipment and interpret exploded views and application notes when selecting repair parts.

Model Fitment and Parts Selection

Listings distinguish NHNA and NH-E applications, cab and non-cab equipment, and configuration-specific parts. The piston and connecting-rod figure excludes the 7600 and 7700, while the FWD differential figures identify the 5600, 5700, 6600 and 6700. Shared figures do not provide identical coverage for every listed model.

The tables pair reference numbers with part numbers, quantities, descriptions and production-date notes. Front axle support shims, seals, bushings and attaching hardware are identified separately, helping you distinguish an assembly from the individual items needed for a repair.

Engine, Injection Pumps and Drivetrain

The crankshaft and flywheel breakdown distinguishes narrow- and wide-tooth dynamic balancers and specifies companion gears for replacement crankshafts. Cylinder-head replacement entries also identify additional dowels, fasteners or gaskets required for particular substitutions.

Separate rotor and inline injection-pump breakdowns carry model and market restrictions, including a Switzerland-specific 5600 inline-pump application. The transmission sections distinguish the dual-range gear train, Dual Power clutch components and PTO clutch assemblies.

These are parts illustrations, not overhaul procedures. Transmission rebuilding and injection-pump repair require separate service instructions; the exploded views do not establish disassembly order, adjustment settings or test procedures.

Hydraulic Lift and Brake Assemblies

The lift-shaft sections separate Load Monitor and non-Load Monitor linkage. Remote-control valve listings distinguish single- and double-spool arrangements, while the center-housing pump tables identify components for tractors with and without Dual Power.

Steering-pump pressure ratings belong to the steering assembly, rather than the tractor's hydraulic lift circuit. Hydraulic and brake repair still requires the applicable service manual's precautions for pressurized systems.

Wiring Layouts and Cab Equipment

Electrical System, Rear Wiring and Cab Electrical System figures show harness assemblies and component locations with numbered parts references. They are not diagnostic circuit schematics. Separate illustrations cover implement lamps and York and Tecumseh A/C compressor variants.

The NH-E cab rear-crossbar repair-kit entry uses a cab serial/date-code cutoff and refers installation work to Service Bulletin #9 (1980). That bulletin is not included in this catalog.

Hardware Identification

The hardware-conversion appendix distinguishes clearance-hole substitutions from threaded-joint compatibility. Mixing inch and metric fasteners in tapped holes can damage the mating threads.

Printable PDF and Included Pages

The single printable 661-page PDF contains 637 illustrated parts-catalog pages in English, a five-page figure index, 14 pages of multilingual abbreviations and two hardware-conversion pages. A one-page figure-search guide, one additional introductory page and one blank page are also included in that total.