1975–1981 Ford 4600 3-Cylinder Tractor Parts Catalog

This illustrated parts catalog covers the 1975–1981 Ford 4600 3-cylinder all-purpose tractor, with diesel and gasoline listings. Other Ford models appear in shared assembly and component lists; applicability depends on the individual figure and part entry.

Search, navigation and drawing detail: Figure headings and parts tables are searchable, but callouts within illustrations are not. PDF bookmarks link the index, catalog and reference sections. Dense illustration callouts benefit from zooming; some long headings and table entries are clipped at the right edge.

• Engine and cooling: Cylinder block, cylinder head, crankshaft, piston, valve gear, oil pump, radiator and water pump breakdowns with corresponding parts lists.

• Fuel systems: Exploded Holley and Zenith carburetor assemblies, rotor fuel injection pumps, fuel injectors, and single- and dual-filter arrangements.

• Transmission and PTO: Eight-speed transmission gears, clutch controls, independent power take-off (IPTO), reduction gear boxes and FWD transfer-box component views.

• Steering, axles and brakes: Manual and power steering gear, front and rear axle components, differential parts, brake controls and hydraulic trailer brake hardware.

• Hydraulics: Lift cover, lift cylinder, flow control valve and linkage drawings, plus engine-mounted piston pumps and center-housing gear pumps.

• Electrical and cab equipment: Wiring-harness layouts, starter and alternator breakdowns, instrument clusters, cab assemblies, heaters and air-conditioning components.

This catalog suits mechanics and experienced owners who already recognize tractor assemblies and need parts information for repair planning.

Assembly and Component Identification

Each figure links numbered components to tables with part numbers, quantities, dimensions and application notes. Matching the drawing to the NHNA, NH-E or Brazil listing helps distinguish components for the installed configuration before ordering repair parts.

Wheels and chassis entries distinguish standard and power-adjustable rear wheels, disc and rim assemblies, front-wheel weight kits and cab or no-cab equipment.

Engine and Fuel-System Parts

Separate diesel and gasoline listings cover engine internals, gasket sets and overhaul kits. Replacement-block notes identify E6-level conversions and stepped-stud kits FP115 and FP575.

The replacement-block listings also flag an oil-filter-port opening; overlooking the associated plug requirement risks oil loss and engine damage.

Oil-bath and dry air cleaner assemblies have their own component lists, as do the Brazil water separator and fuel sedimenter.

Transmission, FWD and Hydraulic Variants

FWD transfer-box drawings separate collar-gear and wet-clutch designs. The differential section identifies limited-slip parts, and the transmission entries distinguish creeper-equipped applications.

The independent PTO listings document linked clutch-brake support and piston updates for NH-E units before date code 9E02.

Hydraulic breakdowns extend to single- and double-spool remote control valves, selector valves, automatic pick-up hitches and lift-assist rams.

Electrical Parts and Cab Equipment

Electrical sections contain component and harness-layout drawings, not functional circuit schematics. Shared parts lists distinguish 4.5-inch and 5-inch starters, 32- and 51-amp NHNA alternators, and 46-amp NH-E alternators.

Instrument clusters, cab heating and air-conditioning assemblies have separate lists. The cab rear-crossbar repair-kit note directs installation work to separate Service Bulletin #9 (1980).

Parts Data and Repair Scope

The tables document hardware sizes, seal dimensions, standard and oversize pistons, undersize bearings and replacement-part notes. They do not provide service limits, torque tables or step-by-step repair procedures.

Always verify your tractor's exact configuration and observe standard shop safety practices before ordering parts or beginning heavy maintenance.

PDF Contents and Page Breakdown

One printable English PDF, with English, French and Spanish in the abbreviation appendix. The 707-page PDF includes 683 pages of illustrated parts listings, a 5-page figure index, 1 search-guide page, 14 abbreviation pages, 2 hardware-conversion pages, 1 introductory advertising page and 1 blank separator page.