1983–1992 Ford/New Holland TW25 Tractor Parts Catalog

This parts catalog for the 1983–1992 Ford TW25 agricultural tractor combines the main tractor catalog with additional Ford loader catalogs. Shared plates also reference TW5, TW15, TW35 and 8530–8830 tractors; the application notes establish which parts belong to each model.

• Engine and fuel: Exploded views of the engine block, fuel injection pump and turbocharger, with replacement-assembly notes and associated hardware listings.
• Transmission and PTO: Dual Power clutch, independent PTO clutch, creeper gears and transmission handbrake lever, with parts lists for their control components.
• Axles and steering: Front axle and differential, steering motor, steering column and wheel assemblies, including separate listings for the different axle configurations.
• Tractor hydraulics: Deluxe remote control valves, hydraulic lift cylinder and related pumps, tubes and fittings, identified through component drawings and itemized lists.
• Electrical and cab: Instrument cluster, wiring harnesses, alternator and air conditioning compressor, with application notes distinguishing cab equipment and instrument-system variants.
• Loader equipment: Lift and bucket cylinders, hydraulic hose routing, implement mounting drawings, grapple forks, bale spears and pallet forks across the included loader catalogs.

Suited to mechanics and experienced owners who can identify an assembly from an exploded view and apply model-specific notes when selecting replacement parts.

Assembly Structure and Documentation

Each illustrated assembly is paired with reference numbers, part numbers, quantities and application details. Cab distinctions such as L/Cab and W/Cab, along with NH-E and NHNA market references, help separate otherwise similar entries. Date fields describe component applicability.

Front axle listings distinguish APL-345, APL-350 and APL-365 applications; a shared drawing does not make their parts interchangeable. Steering listings include individual shim options as replacement parts, without establishing a workshop adjustment tolerance.

Front wheel entries also reference a service bulletin for the six-lug to eight-lug conversion. That reference is not a conversion procedure included in this catalog.

The exploded views support parts identification and repair planning. They do not provide step-by-step reassembly, injection-pump overhaul or hydraulic-cylinder repacking instructions; those jobs require the appropriate service procedures.

Replacement Notes for Engine and Driveline Parts

Engine block entries identify replacement assemblies and associated hardware requirements. The Dual Power clutch list records substitutions that require changes to mating plates and retaining parts. These notes help a mechanic identify the related items needed for a compatible replacement before ordering a single clutch component.

The hardware appendix also limits its inch/metric substitution guidance to suitable fastening and mounting applications. It excludes tapped holes and mixed-thread nut-and-bolt combinations, helping avoid incompatible threaded replacements.

Hydraulics, Loader Cylinders and Attachments

The additional catalogs cover the 773 non-quick-attach loader, 774 farm loader, 7312 and 7314 quick-attach farm loaders, 7412HD and 7413. Their mounting-kit listings establish individual tractor applications; inclusion in the PDF does not establish TW25 compatibility for every loader.

Cylinder drawings identify heads, rods, pistons and seal-kit contents. Serial breaks in the 7312 and 7314 lists distinguish replacement heads and seals, allowing the parts selection to follow the applicable cylinder version. Hydraulic routing and attachment drawings relate the hoses, valves and mounting hardware to the assemblies they serve.

Electrical Equipment and Cab Components

Electrical coverage consists of harness and component illustrations with parts lists, rather than circuit schematics for fault tracing. Instrument-cluster variants, cab connections and air conditioning compressor assemblies receive separate entries.

Selected Wheel Hardware, Ballast and Seal Details

These entries are a small sample of the catalog's hardware, ballast and seal identification data.

Wheel hardware and ballast: Front wheel bolt 83957574 is listed as 5/8"-18 x 2-1/2". Front wafer weight 82005139 is 40 kg; a separate front weight, D8NN3A370GC12B, is listed at 100 lb.

Steering seals: O-ring 9617873 in the power steering assembly has a .468" inside diameter and .078" thickness. These are part-identification dimensions; they do not establish assembly torques, wear limits or adjustment settings.

PDF Search, Navigation and Included Catalogs

Part-number searches and catalog bookmarks: Parts lists and headings contain searchable PDF text. Labels embedded within drawing images generally require visual inspection and zooming. Embedded bookmarks lead to the catalog indexes, parts sections and appendices; they do not link to every individual assembly.

One printable PDF contains 1,102 pages: TW25, 588; 773, 33; 774, 35; 7312, 171; 7314, 149; 7412HD, 41; and 7413, 67. These catalog totals include their indexes and seven blank separator pages. The remaining 18 pages—one introductory page, one figure-search guide, 14 abbreviation pages and two hardware-conversion pages—are already included in the total.