Description

Michigan 125 III A 1968 Parts Catalog

You ever tear down a brake assembly on a Michigan 125 III A and find yourself staring at a worn-out slack adjuster with no idea what part number to order? I have. More times than I care to count. That’s why you need this 1968 Parts Catalog sitting on your workbench. Not some aftermarket reprint that guesses dimensions. The real OEM manual from Clark Equipment, printed in 1968, 104 pages of exploded diagrams and factory part numbers. No guesswork.

Brake and Air System Components

Look up any brake part from the front or rear axle — it’s in here. The index lists “Air Brake Valve” on page 58 and “Brake Assembly — Front and Rear” on page 47. Need the parking brake? Page 48. Slack adjusters? Pages 39 and 43. Every component has a Clark part number and an exploded view showing how it fits together. You won’t find a generic cross-reference that sends you to the wrong bushing. This is factory spec.

Engine Accessories and Cooling System

Engine section starts on page 1: alternator, air cleaner, radiator cap, fuel tank, and all the connections. The “Engine and Accessories” group includes the oil pressure lines and fan shroud. If you’re chasing a coolant leak or need the correct belt, the part numbers are there. Aftermarket catalogs swap radiator caps between models — this one gives you the exact cap for the 125 III A. That matters when you’re running a job and the temp gauge creeps up.

For a complete engine breakdown, check the related Michigan Model 125 III A Articulated Tractor Shovel Parts Manual.

Transmission and Torque Converter – What the Manual Shows

Transmission parts are spread across pages 24-34. You get the case, clutch groups (First and Second on page 25, Input–Reverse/Third–Fourth on page 26), and the control cover assembly on page 28. The torque converter assembly is on page 32-33, with the charging pump and pressure regulating valve on page 34. Every seal, bearing, and valve has a factory number. If you’re rebuilding a converter, you need the correct cartridge kit for the transmission and converter filter — that’s listed too. Aftermarket kits? Skip ’em. Use what Clark spec’d.

Hydraulic Systems – Bucket, Boom, and Steering

Hydraulic section covers the bucket and boom system (pages 70-71) plus the steering system on page 66. You get the boom cylinder (page 73), bucket cylinder (page 72), and the steering cylinder (page 68). The hydraulic pump for bucket and boom is on page 74; steering pump on page 64. Need the reservoir filter assembly (suction and pressure)? Pages 36-37. The control valve assembly is page 76. Every o-ring, fitting, and tube is listed. I’ve seen guys order a whole pump because they misidentified a bad seal — that doesn’t happen with this catalog.

Axle Assemblies – Front and Rear Drive

Front drive axle assembly starts on page 39, rear drive on page 43. Both include the differential and carrier (pages 41 and 45), planet carrier assemblies (page 46), and slack adjusters. The brake assemblies are here too. You’ll find the part numbers for bearings, seals, and shims. If you’re setting up a differential, you need the correct crush sleeve or shim pack — this catalog gives you the Clark part number, not a “will fit” number from some third-party site. That’s the difference between a quiet diff and a noisy one.

The front axle content ties into the Michigan 125 III A Parts Manual No. 2521-R1 for later revisions, but the factory base spec is right here.

Why This 1968 OEM Parts Catalog Beats Aftermarket Reprints

I’ve got a stack of aftermarket catalogs in my office that I use as fire starter. They leave out critical details — like the torque converter air breather location or the exact part number for the hydraulic reservoir filter element. This manual was printed by Clark Equipment in Belgium (see the imprint on page 2). Every page is a direct scan of the original factory document. The part numbers match the ones stamped on the components. You won’t find a generic diagram that shows a different bellcrank arrangement. This is the bible for the Michigan 125 III A.

Understanding the history of construction equipment manufacturing helps when sourcing parts. For a broader look, read the Automotive Industry Overview. The engineering behind these machines demanded precision — that’s what you get here.

For a more extensive catalog covering additional variations, Michigan 125 III A Parts Catalog – OEM Factory Manual 264 Pages.

Always verify part numbers against your machine serial number. The manual provides space on page 1 to record that info. Do it. Never order a slack adjuster without checking the serial number — the difference between early and late production can be one thread pitch, and that’ll cost you downtime. Also, the Automotive Industry Overview highlights how standardisation improved over the decades, but for this 1968 machine, stick to the original numbers.

Does this parts catalog include torque specifications?

No. This is a parts catalog, not a service manual. You need the service manual for torque values.

How many pages and what year?

104 pages, published 1968. It covers the Michigan 125 III A articulated tractor shovel. The index lists over 200 components from Accelerator Pedal to Wiring Harness. Every part has a factory number. If you don’t see a part, look under the correct category – for example, the Converter Pressure Regulating Valve is on page 34 under the Torque Converter section. The manual also includes the transmission filter cartridge kit, brake air lines, and cockpits wiring harness. For a machine that’s over 50 years old, this is the most reliable reference you’ll find.

You’re running a job site or a home garage, the last thing you need is a wrong part holding up a repair. This factory parts catalog puts the right numbers in your hand. No scrolling through forums, no guessing which bracket fits. Access the Factory Manual and get back to working on your Michigan.