Description

Clark-hurth 280B Parts Catalog – OEM Factory Specs (87 Pages)

If you’ve ever wasted a day ordering the wrong part for a Clark-hurth 280B because some aftermarket site had a misprinted number, you know exactly why this catalog exists. That’s the kind of anger that pushes a guy to buy a factory parts book. This is the actual OEM Parts Catalog – 87 pages of exploded diagrams, factory part numbers, and cross-references that the dealership used. Not a scan of a scan. Not a third-party recompile. Original Clark-hurth documentation.

Transmission Clutch Groups and Shafts – Critical Part Number Cross-References

The 280B transmission is a multi-clutch unit with input, reverse, third & fourth, first & second, and a splitter clutch group (pages reference the book’s internal numbering like 1J5 for output shaft, 1J6 for reverse shaft, etc.). Each group has its own part numbers for plates, seals, and pistons. If you’re rebuilding a transmission, you need the exact numbers. The catalog lists every clutch group individually: Transmission Clutch Group — Input, Reverse, Third & Fourth, Transmission Clutch Group, First & Second, and Transmission Clutch Group, Splitter. No guessing – see the diagram and grab the number.

Roll-Over Protective Structure (ROPS) and Sheet Metal – What’s Listed

Sheet metal group, steps, shroud, muffler, tailpipe – all in here. ROPS is on page reference 1H24. Nameplates and decals? Page 1G23. If you need a step (LH or RH) or the radiator sand grid kit, the part number is in the Parts Catalog. This isn’t a repair manual; it’s the parts bible for ordering. You get the OEM number, you call the dealer, you get the right piece.

Steering System Breakdown – From Steering Gear to Secondary Steering

Steering gear assembly, steering gear mounting, steering controls, main & steer pump assembly, reservoir – all listed with part numbers. There’s an entire secondary steering section: electrical (2E15), hydraulic (2E17), and pump (2E18). If your 280B loses power steering on a job site, you need to know which valve or pump part to swap. This catalog gives you the factory codes, not a generic “fits all” listing.

Propeller Shaft Assemblies – Converter and Rear Axle

Two propeller shaft assemblies: transmission/converter (1H1) and transmission/rear axle (1H3). Plus a propeller shaft kit (1H4) for the converter/transmission joint. Yokes, universals, bearing assemblies – all exploded and numbered. If you’ve had a driveline vibration, this is where you find the correct bearing and flange part numbers without measuring seven times.

Hydraulic and Air Brake Valve Assemblies – Factory Specs

Main valve assembly (1J16), steering valve (1J20), converter pressure regulating valve (1J23), air brake valve (1J14). Each valve has its own section with individual part callouts. O-rings, spools, springs – the small stuff that aftermarket catalogs often miss. You get the OEM seal part number, not a “substitute” that leaks after 50 hours. That’s the difference between a catalog and a guess.

OEM Clark-hurth Documentation vs Aftermarket Catalogs

I’ve seen aftermarket parts books that list the same part number for three different shaft lengths. This 87-page Parts Catalog was printed by Clark-hurth. The page layout, the line drawings, the part number format – it matches the factory microfiche. Every entry is keyed to a specific 280B configuration. If you’ve been burned by a third-party PDF that had numbers swapped, this is the fix. OEM or nothing.

For more context on the vehicle industry, see the Automotive Industry Overview. Also check the Internal Combustion Engine for engine part relationships.

Who Needs This Parts Catalog?

Garage owners pulling a 280B transmission for overhaul. Mobile heavy equipment mechanics who need to order parts before the sun comes up. DIY owners who inherited an old Clark-hurth loader. If you’re ordering parts without the OEM catalog, you’re gambling. This book ends the gamble.

Related Manuals

• Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs
• Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs
• Clark-hurth 85A, 85A1 1978 Parts Catalog – OEM Factory Specs

FAQ – Clark-hurth 280B Parts Catalog

Does this catalog cover transmission internal parts like clutches and shafts?

Yes. It lists every transmission clutch group, shaft group, and shift control valve assembly with factory part numbers.

How are the part numbers organized – by assembly or alphabetical?

The table of contents groups parts by system (e.g., “Transmission – Output Shaft Group 1J5”) and within each group you get an exploded diagram with numbered callouts and a parts list. The index at the back (both English and French sections) lets you look up by part name. So if you need the Transmission Control Cover Assembly, you go to page 1120 in the English TOC. It’s logical: system first, then component. You’ll need to know which group your part belongs to, but the diagrams make it obvious.

Are torque specs or bolt sizes included in this parts catalog?

No. This is a parts catalog, not a service manual. It gives part numbers and quantities, not torque values.

Is the catalog bilingual? I see French in the description.

Yes. The PDF includes both English and French (Table des Matières) sections for the same part numbers. Useful if your crew reads French, or you’re working on a machine with Canadian provenance.

You need to stop ordering parts blind. If you’re working on a Clark-hurth 280B, don’t trust someone’s scribbled cross-reference. Access the Factory Manual and keep it on your bench tablet.