Description

Clark-hurth 280C Parts Catalog

You’ve had a machine down because the parts counter sent you the wrong bellhousing. I’ve seen it happen – a guy reads a worn-out part number off a casting, orders a generic substitute, and finds out the bolt pattern doesn’t line up. That’s wasted time, wasted freight, and a customer looking at you sideways. The Clark-hurth 280C Parts Catalog stops that cold. This isn’t a reprint or a scanned copy from some third-party aggregator. It’s the original OEM publication, 230 pages of factory part numbers, exploded views, and the exact cross-references Clark used when these machines left Peoria.

Serial Number Verification for the 280C

Your 280C wheel dozer carries a serial number for a reason. On page 1 of this catalog, they tell you to record that number – and they list the range it covers: CUMMINS – 4256A, plus codes like 2SC 885 SPR922 CGAC. If you try to look up parts without matching that stamp, you’re gambling. I’ve torqued enough bolts on these beasts to know that Clark changed bearing cups, seal sizes, and even hydraulic line routing between serial breaks. This catalog gives you the exact grouping, so you pull the right differential carrier gasket the first time.

230 Pages of OEM Parts Data

Flip through this thing and you’ll see why aftermarket parts catalogs make me want to throw a wrench. Here’s what you get: every component broken down by assembly – transmission, final drive, blade hydraulics, steering axle – with part numbers that actually match Clark’s bin stock. Need the brake piston seal for a late-production 280C? It’s in this book, not some generic “interchange” number that fits nothing. And because it’s a parts catalog, not a service manual, you get the engineering drawings that show where each washer goes. No guesswork.

You can cross-reference this catalog against your machine’s serial number. The warranty section on page 3 covers the six-month warranty on original parts and replacement parts – but only if you use genuine Clark parts. This book is your ticket to prove what goes where.

Decoding Publication No. 3391 and TS-22323

Every Clark parts manual carries a publication number and a TS number. This one is Publication 3391, with TS-22323 printed on page 2. That TS number ties back to the engineering release – it tells you the revision level and what machines it covers. If you work on a fleet of 280C dozers, you want the latest revision. This catalog is the one Clark authorized for early-80s production machines. Don’t rely on a photocopy that’s missing the last ten pages of the driveline section.

Warranty Coverage and Parts Replacement Policy

Clark’s warranty from page 3 of this manual spells it out: they’ll replace defective parts (labor included) for six months after first put into use, but only if you install genuine Clark parts and follow the maintenance schedule. Aftermarket junk voids the warranty. I’ve seen owners try to save fifty bucks on a hydraulic pump seal and end up replacing the whole pump because the aftermarket seal didn’t handle the pressure. The factory parts catalog gives you the correct O-ring dimensions and material spec – not a vague “equivalent”.

When you order parts using this catalog, you also get the exploded view that shows fastener torque specs (though for actual torque values, you’ll want the separate service manual). But for correct part numbers, this is the only source I trust.

How to Use the Catalog for Ordering

Open to the group index near the front – it breaks the machine into 10 major groups (e.g., engine, transmission, final drive). Find the group number, then turn to the page that lists every part in that assembly. Each part has a reference number tied to the drawing. Order by that Clark part number – not by “it looks like the same one” or “the counter guy said this interchange works.” I’ve watched a shop lose a week waiting for the wrong kingpin set because the aftermarket catalog showed a different length. This manual eliminates that.

Related manuals you should also have on the shelf:

• 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

For general background on heavy equipment manufacturing, see the Automotive Industry Overview. If you want to understand the Internal Combustion Engine used in this machine, that’s the Cummins 4256A – and this catalog lists every engine-mounted part from the oil pan gasket to the air compressor drive coupling.

FAQ

Does this parts catalog cover the entire 280C wheel dozer?

Yes – it includes all major assemblies: engine, transmission, torque converter, final drives, axle, blade hydraulics, steering, and cab components. The 230 pages cover the machine from the exhaust stack to the cutting edge.

What serial numbers are included?

The catalog covers the CUMMINS – 4256A serial range, with specific codes like 2SC 885 SPR922 CGAC noted on page 1. If your machine’s serial number falls outside that range, you’ll need a later revision.

Can I use aftermarket parts listed in this catalog?

No. This catalog lists only genuine Clark part numbers. Using aftermarket parts voids the warranty Clark provides (see page 3) and may lead to fitment or durability issues. Get the factory part and do the job once.

How do I order parts using this manual?

Find the exploded view for your assembly, note the reference number, and order the corresponding Clark part number from your dealer. Cross-check your machine’s serial number first.

If you’re tired of chasing part numbers that don’t fit, stop wasting time with reprints and guesswork. Access the Factory Manual and get the exact OEM parts catalog Clark used when your 280C was built. 230 pages, factory spec, no compromises.