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

This Ford 335 3-cylinder utility tractor parts catalog covers 1975–1978, with shared-component listings for the 420, 515, 532, 535 and other Ford tractors identified in individual figures. Those application notes determine which parts fit each configuration; shared listings do not provide complete tractor coverage for every model named.

Figure Search and PDF Contents

Parts lookup and navigation: Parts-list text and figure codes are searchable. Embedded bookmarks open the figure index, main parts section and reference appendices. Illustration callouts are image content rather than searchable text.

One printable PDF contains 511 pages total: 488 parts-catalog pages, a four-page figure index, one search-instruction page, 14 abbreviation-reference pages, two hardware-conversion pages, one additional introductory page and one blank page. All are included in the total.

Engine, Driveline and Hydraulic Parts Breakdowns

These selected topics cover the main tractor assemblies; the catalog also lists Series 796 quick-attach hitch and cab-mounted radio parts.

• Engine components: Illustrated breakdowns of gasoline and diesel cylinder blocks, crankshafts, camshafts, pistons, connecting rods, oil pumps and gasket kits.

• Transmission and PTO: Manual and dual-range gearboxes, manual reversing transmissions, reduction gear boxes, PTO assemblies, clutch controls, and single and double clutches.

• Axles, steering and brakes: Front wheel assemblies, manual and power steering, rear axle and differential components, differential-lock linkage, brake controls and handbrakes.

• Hydraulic equipment: Lift covers, lift cylinders and linkage, flow-control valves, engine-mounted piston and gear pumps, and single- and double-spool remote valves.

• Fuel and cooling: Holley carburetor and rotor injection-pump breakdowns, injectors, fuel filters, throttle controls, dry air cleaners, radiators and water pumps.

• Electrical equipment: NHNA and NH-E component layouts, rear wiring illustrations, starting motors, alternators, distributors, lamps and instrument-cluster parts.

• Body and operator equipment: Crown and flat-top fenders, platforms, hood and grille components, seats, rollbars, ROPS, seat belts and cab accessories.

Suited to mechanics, parts-counter staff and experienced owners who can match an installed assembly to an exploded view and its application notes.

Component Assembly Walkthrough

More than 100 illustrated parts groups connect reference callouts with part numbers, quantities and application notes. Whether identifying a missing linkage or sourcing hardware for a differential repair, you can match washers, shims, gears, gaskets and mounting pieces to the relevant assembly before ordering.

Front Wheel Assembly (01A04) and Rear Axle, Differential & Related Parts (04A01) show how individual hardware and bearing references relate to their assemblies. The catalog also distinguishes complete units from included components and records replacement-part notes.

These exploded views support component identification; they are not step-by-step repair or reassembly instructions. Cab-specific brake linkage is referred to figure 02A06, which is not included in this file.

Engine and Fuel-System Fitment

The engine listings separate gasoline and diesel components rather than treating them as interchangeable. Holley Carburetor Assembly (09G01) identifies application-specific carburetor assemblies and internal parts, while the rotor injection-pump section breaks down its housings, seals and related components.

A piston-fitment note flags some 2600 and 3600 gasoline engines with a longer-stroke crankshaft: the standard listed pistons can project above the block. This warning applies to those shared engine listings, not to every tractor in the catalog.

Hydraulic and Electrical Configurations

Hydraulic Lift Cover & Related Parts (05A01) includes seals, control components and configuration-specific shafts. Pump listings distinguish piston-type and gear-type assemblies, with different seal and housing references tied to the listed pump versions.

Electrical System illustrations separate NHNA left- and right-hand layouts from NH-E equipment. Rear Wiring, W/Stop Lamps & Flashers, NH-E (11D05) identifies harnesses, switches and mounting parts through reference callouts; these are component-layout illustrations rather than diagnostic circuit schematics.

The hardware appendix distinguishes clearance-hole interchangeability from thread compatibility. Mixing metric and inch nuts with threaded fasteners risks thread damage even where either fastener size fits a mounting hole.

Always prioritize shop safety and consult a certified technician when performing heavy equipment maintenance, particularly around heavy assemblies and pressurized hydraulics.

Selected Gear-Set and Seal Identification Data

The rear-axle table lists D1NN4209A and D1NN4209B gear sets at 6.16:1, excluding models 231 and 531 and distinguishing handbrake configurations. D1NN4209E is listed at 5.12:1 for the 231 and 531, with or without a handbrake.

The hydraulic lift-cover list identifies O-ring 229317 as 0.549-inch inside diameter by 0.103-inch thickness. This is a component-identification dimension, not a wear limit or hydraulic adjustment specification.