Description

Clark-hurth 280 IIIA Parts Catalog – 298 Pages of OEM Factory Specs

If you’ve ever ordered a part for a Clark-hurth 280 IIIA Michigan Tractor Dozer and gotten the wrong air chamber or accumulator, you know the headache. I’ve watched guys bolt on the wrong brake valve because they didn’t have the factory breakdown. This Parts Catalog fixes that. It’s the original Clark Equipment Company publication, not some aftermarket reprint with part numbers that sort-of-match. Every page counts because serial numbers and supersessions are documented.

Parts Catalog for the Clark-hurth 280 IIIA

298 pages of nothing but factory part numbers, exploded views, and cross-references. The alphabetical index lets you find any component fast. Need an accumulator? Page T21. Alternator and belts? Page 91. Each entry lists the correct Clark part number and applicable serial number range. You don’t guess which valve fits a 280 IIIA versus a 85III – the catalog is specific to the 280 IIIA with G.M. 8AMG101 and 4047B101FSC engine ranges. Record your machine serial number on page 1 and never lose track of what you’re ordering.

What Systems Are Covered in 298 Pages?

The Engine section (accessories, air cleaner, alternator) runs from page 91 through E41. Brake components cover air chambers, pedals, lines, and reservoirs across multiple page ranges (B3–B11). Valve listings include air brake valve (V5) and other control valves. Transmission parts are thorough – accumulator, air breather, and planet carriers. The index also includes the back-up lamp (S7–S11), alcohol injector, and alternator kit. If it bolted onto a Michigan 280 IIIA from the factory, the part number is in here.

Page 91: Alternator and Belts

That page alone saves hours. It shows the alternator mounting, belt routing, and part numbers for the alternator kit (Z3) and the belts. The engine accessories section also covers the air compressor (E31), aspirator (E39), and pressure gauge (E8–E9). For background on how an internal combustion engine uses these accessories, check the Internal Combustion Engine overview. But for ordering, stick to page 91. I’ve seen aftermarket catalogs list the wrong bracket for the 280 IIIA – this manual gives you the OEM number every time.

Use the Alphabetical Index to Locate Parts

Don’t waste time flipping through 298 pages. The index lists every component from “A Accessories Engine” to “B Battery.” Cross-references like A3, A7, and All tell you exactly which pages to open. For example, “Air Brake Valve” points to V5, while “Axle Assembly” covers A3–A7 (front) and A9–All (rear). The machine serial number range is printed on the first page – if your 280 IIIA falls within G.M. 8AMG101→ or 4047B101FSC→, this catalog applies. No guesswork.

OEM Clark-hurth Documentation: Why It Matters

This is the original Clark Parts Manual No. 3098, printed in the U.S.A. in 1966. The warranty page and improvement clause are included – Clark reserved the right to change designs, and it’s all documented. Aftermarket manuals often skip the serial number breaks or use generic part numbers. This one is direct from the factory. For the broader context of automotive repair standards, see the Automotive Industry Overview resource. But for your 280 IIIA, trust the OEM catalog. I’ve torqued enough head bolts to know that wrong parts cause leaks and downtime.

Does This Parts Catalog Include Torque Specifications?

Does This Parts Catalog Include Torque Specifications?

No. Torque specs are in the service repair manual, not this parts catalog.

Can I Use This to Rebuild the Transmission?

Yes, but only for part identification. The transmission section includes exploded views with part numbers for the accumulator, air breather, and other components. You’ll see the breakdown on page T21. However, assembly procedures and torque values require the separate service manual. This catalog lets you order the correct gaskets and seals without guessing. I’ve seen guys try to use aftermarket parts lists and end up with wrong clutch packs because the part numbers didn’t match the serial number range. This manual is specific to the 280 IIIA and includes serial number ranges. That matters.

If you’re wrenching on a Michigan 280 IIIA, stop chasing wrong parts and get the original factory breakdown. Access the Factory Manual from AutoRepairManuals and keep it in the toolbox. It’ll be the difference between a job that takes one trip to the parts counter and a weekend of returns.

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