Michigan 275 III A Parts Catalog – OEM Factory Manual

If you’re rebuilding a Michigan 275 III A, you need the actual parts catalog. Not some aftermarket PDF that’s been scanned twice and has missing pages. This is the factory manual—126 pages—from Clark Equipment. I’ve used these in the shop for years. When you’re looking for a bucket cylinder seal kit or a torque converter charging pump part, guessing burns time and money. This catalog gives you the right part number on the first call.

Engine and Accessories Coverage (Page 1)

The catalog opens with the Engine and Accessories section—page 1. That includes the block, oil pan, fuel system components, even the engine hourmeter. You get exploded diagrams with callouts so you can match the part to the illustration. If you need something like the fan shroud or radiator cap, that’s in the Radiator section on page 12. Every part listed has a Clark part number. This is how you avoid ordering the wrong water pump or valve cover gasket.

Brake Systems: Valve, Lines, and Assembly (Pages 47-54)

The brake setup on these machines is air-over-hydraulic. The catalog covers the Brake Assembly — Front and Rear (page 47), Parking Brake Assembly (page 48), and the Air Brake Valve (page 54). You also get the Slack Adjuster (pages 39, 43) and the Brake Air Lines (page 53). If you’re chasing an air leak or need the exact diaphragm for the foot valve, the part number is in here. Don’t trust generic brake parts on a loader that weighs 40,000 pounds.

Transmission and Torque Converter Parts (Pages 16-33)

This manual breaks down the Transmission case (page 17), the clutch groups—First and Second (page 24) and Input — Reverse, Third and Fourth (page 25)—plus the Torque Converter Assembly (pages 31, 32) and the Converter Charging Pump (page 32). You also get the Converter Pressure Regulating Valve (page 33) and the Transmission Control Cover Assembly (page 26). Every seal, bearing, and gear is mapped. Need the charge pressure spec? That’s OEM data you won’t find in a third-party reprint.

Hydraulic Cylinders: Boom and Bucket (Pages 68-69)

Two critical sections for anyone fixing the loader arms: Boom Cylinder Assembly (page 69) and Bucket Cylinder Assembly (page 68). The diagrams show the piston, rod, seals, and ports. If you’re rebuilding a cylinder, you need the exact seal kit number. The catalog lists it. Also check the Bucket and Boom Hydraulic System (page 67) for the control valve and plumbing. I’ve watched guys buy the wrong rod seal and waste a Saturday. Don’t be that guy.

Source Authenticity: Factory vs. Aftermarket

This is a genuine Clark Equipment publication—parts manual No. 2175. It covers serial numbers 5AJC101 through 5AJC999 and 6AJC101 onward. Aftermarket parts catalogs often omit the latest revisions or mix up part numbers for different serial breaks. This one includes supplements at the rear for later ranges (7AJC, 8AJC, etc.). When a torque value isn’t listed, the manual references the service manual—but the part numbers are factory-verified. If you’re serious about keeping the machine running, you want the OEM source. For more context on the evolution of heavy equipment documentation, see the Automotive Industry Overview. Also worth reading: Automotive Industry Overview for standards in parts numbering.

Related manuals for this machine include the Michigan 275 III A Articulated Tractor Shovel Parts Manual, the Michigan MODEL 275 III A Parts Manual, and for comparison the VOLVO BM 125C Wheel Loader Parts Catalog.

FAQ

Does this catalog include torque specifications for bolts like cylinder head or wheel nuts?

No. This is a parts catalog, not a service manual. It lists part numbers and shows exploded views. For torque values you need the separate service manual specific to the 275 III A.

How do I confirm my serial number is covered?

Check the inside front cover. The manual covers 5AJC101 through 5AJC999 and 6AJC101 onward. If your machine has a different prefix (7AJC, 8AJC, etc.), the supplements at the rear of the manual should cover those ranges. If not, contact Clark for the exact supplement.

This parts catalog saves you the headache of cross-referencing aftermarket lists. 126 pages of factory diagrams, part numbers, and assembly breakdowns. If you maintain a Michigan 275 III A, you need this on the shelf. Download the Factory Manual from AutoRepairManuals and start ordering the right parts.