1975–1978 Ford 335 3-Cylinder Utility Tractor Parts Manual

This Ford parts catalog covers the 1975–1978 335 3-cylinder utility tractor. Shared parts tables also reference the 420, 515, 532, and 535, plus the 2600, 3600, and 4600 series; coverage for these models is limited to the assemblies and part entries shown.

• Engine components: Detailed parts breakdowns for 3-cylinder diesel and gasoline engines, including cylinder blocks and heads, crankshafts, camshafts, pistons, oil pumps, and gasket kits.

• Fuel and cooling: Holley carburetors, rotor fuel injection pumps, injectors, fuel filters, radiators, and water pumps, with assembly illustrations and component listings.

• Transmission and PTO: 6-speed, dual-range 8-speed, and 6x4 manual reversing transmissions; power take-off (PTO) assemblies, single and double clutches, and reduction gear boxes.

• Hydraulics: Hydraulic lift cover, shaft, cylinder, and linkage; flow control valves, single- and double-spool remote valves, and engine-mounted piston- and gear-type pumps.

• Axles and steering: Front axle, rear axle and differential parts, differential lock linkage, manual and power steering gears, steering cylinders, and pump/reservoir assemblies.

• Electrical components: Alternators, starting motors, instrument clusters, lighting, and electrical-system and rear-wiring layout illustrations for NHNA and NH-E configurations.

• Chassis and controls: Brake controls, wheel assemblies, crown and flat-top fenders, seat assemblies, and two- and four-post ROPS (rollbars) with mounting hardware.

Suited to mechanics and experienced owners who can use exploded views and application notes to identify parts for tractor repair.

Assembly Views and Parts Identification

More than 100 exploded views map individual components, hardware, gaskets, and mounting kits to parts-list reference numbers and quantities. Figures such as Front Wheel Assembly (01A04) and Rear Axle, Differential & Related Parts (04A01) help identify hardware and mating components before ordering for a rebuild.

Model, cab configuration, market designation, and individual application notes determine fitment. Shared figures include entries for other tractors, so not every component shown applies to the 335.

Engine, Fuel, and Drivetrain Fitment

Engine-block entries identify stepped-stud kits, including FP115, for specified replacement-block combinations. Diesel piston listings flag substitutions that require a complete set, while Dual Range 8 Speed Transmission - Gears & Related Parts (07C03) identifies matched gear and coupling combinations.

Rear axle listings distinguish 6.16:1 gear sets from 5.12:1 sets specified for 231/531 applications, with handbrake-related differences. These application notes help prevent selecting a gear set by appearance alone.

Holley Carburetor Assembly (09G01) separates major overhaul kits from the carburetor repair gasket kit. The rotor injection-pump tables identify internal components and model-specific pump assemblies.

Hydraulic Variants and Seal Identification

Hydraulic Lift Cover & Related Parts (05A01) and the remote-valve tables provide seal dimensions, fastener sizes, and kit contents. Steering and lift components also have bushing and shim listings.

Gear-pump entries separate D4NN600B and E1NN600AB seal applications, including one-piece and two-piece seal arrangements. These distinctions help match replacement seals to the installed pump when planning a hydraulic repair.

Electrical Layouts and Repair Scope

Rear Wiring, W/Stop Lamps & Flashers, NH-E (11D05) shows harnesses, lamps, switches, and mounting components. These are electrical parts-location drawings, not circuit schematics or diagnostic wiring diagrams.

This is a parts catalog, not a step-by-step repair manual. It does not provide teardown sequences, pump calibration, torque tables, hydraulic pressure-test procedures, or electrical fault-finding instructions.

The hardware appendix excludes interchanging metric and inch threads in tapped holes or mixing their nuts and bolts; forcing an incompatible fastener can damage the threads. Always prioritize shop safety and consult a certified technician when performing heavy equipment maintenance.

PDF Search, Navigation, and Page Contents

Parts tables and figure headings are searchable, but reference numbers embedded in illustrations are not; small illustration callouts are easier to read when zoomed. Six bookmarks link to the cover, search guide, index, parts section, and appendices. The printable, English-language file is a 511-page PDF: 488 pages of parts illustrations and listings, a four-page figure index, a one-page search guide, 14 abbreviation pages, two hardware-conversion pages, one cover page, and one blank page, all included in the total.