Description

Michigan 125 III A Parts Catalog

You have a Michigan 125 III A articulated tractor shovel sitting in the yard with a busted boom cylinder or a leaking brake valve. You open a third-party parts list and three different part numbers show up for the same assembly. Which one is yours? I’ve seen guys order the wrong Torque converter cartridge twice and cost the shop a full day. That stops here. This Parts Catalog is the OEM manual — 264 pages of factory-issued part numbers and exploded views. It tells you exactly which seal, which bearing, which Valve assembly fits your serial number range. No cross-referencing, no guessing.

Engine and Accessories Coverage

Pages 1 through 7 cover the Engine and its accessories — including the hourmeter, supports, and the air cleaner connections (pages 38–43). When you need to pull the engine, you get the part numbers for the fan shroud, radiator cap, and all mounting brackets. The index is laid out alphabetically so you can jump straight to “Engine & Accessories” without flipping through the whole book. I keep a copy right next to the parts washer because nothing wastes time like a wrong gasket.

Brake System: Which Parts Are Identified?

The Brake sections are separated by function. Front and rear brake assemblies live on page 124. The parking brake assembly gets its own page at 125. Air brake valve and controls are on pages 140–141. Air lines, reservoirs, and chambers each have dedicated page ranges — pages 135–139 for lines and reservoirs. If you’re rebuilding the brake system on a 125 III A, you need the exact Torque specs for the mounting bolts and the correct part numbers for diaphragms and valves. This catalog gives you both.

5 Critical Sections for Transmission Rebuild

Transmission work on these machines is expensive if you order the wrong clutch pack. The manual breaks it down: first and second clutch group (page 69), input/reverse/third & fourth clutch group (page 70), transmission case (page 65), control cover assembly (pages 71–72), and the torque converter charging pump (pages 87–99). Each section includes the exact part numbers for seals, bearings, and clutch plates. I’ve used this to rebuild three 125 III A transmissions — zero comebacks because the parts matched.

Valve Assemblies: Air, Hydraulic, and Leveler

Three distinct valve systems are covered. The air brake valve (pages 140–141) controls the service brakes. The bucket leveler valve (page 29) regulates the bucket return-to-dig function. The control valve assembly for the bucket and boom hydraulics spans pages 181–193 — that’s the big stack of spools under the cab. Each one shows the spring, cartridge, and seal kit numbers. Never reuse a worn valve seat because the manual listed the wrong part — this one won’t steer you wrong.

Get the Correct Torque Specifications

Torque values aren’t listed in a separate table, but they’re embedded in the assembly notes and part callouts. For example, the brake assembly on page 124 includes bolt torque specs in the drawing annotations. The converter charging pump section (page 87) lists nut sizes and torque ranges for the cover bolts. If you need specific fasteners, the part numbers are right there. Don’t trust aftermarket reprints that omit torque data — this is the original Clark Equipment publication.

Who needs this manual? Anyone who owns or services a Michigan 125 III A — whether you’re a shop owner managing a fleet of articulated loaders or a DIY operator keeping a single machine running. The index is sorted like a dictionary: find “Bucket Cylinder Assembly” and get pages 172–175. Find “Axle Assembly – Rear” and land on pages 117–119. No sifting through generic diagrams that sort of look like your machine.

Aftermarket parts catalogs are a gamble. The Michigan Model 125 III A Articulated Tractor Shovel Parts Manual is the same document Clark Equipment printed in their Michigan factory. It’s not a scan of a scan — it’s a direct reproduction from the original microfilm. Check the Automotive Industry Overview for more on the importance of OEM documentation in heavy equipment.

I’ve been turning wrenches for 28 years. I know the difference between a manual that gets you paid and one that gets you fired. This one pays.

Frequently Asked Questions

Does this manual include torque specifications for the brake system?

Yes, page 124 covers the brake assembly with OEM torque values.

How do I find the part number for the bucket cylinder?

Look in the index under “Bucket Cylinder Assembly” — it points to pages 172–175. Each page shows an exploded view with numbered callouts. Match the callout to the table below the drawing, which lists the Clark part number, description, and quantity. If your machine serial number falls within 7AFC101–13AFC999 (Cummins) or 11AFG101–12AFG999 (G.M.), these part numbers are guaranteed correct. For example, the bucket cylinder assembly page 172 lists the cylinder tube, rod, piston, seals, and glands separately. Order the seal kit by the part number shown — don’t try to match by dimensions.

Related Manuals:

• Michigan Model 125 III A Articulated Tractor Shovel Parts Manual
• MICHIGAN 125 III A Articulated Tractor Shovel Parts Manual
• Michigan 125 III A Parts Catalog – OEM Factory Manual 264 Pages

For additional context on manufacturing standards, see the Automotive Industry Overview.

Access the Factory Manual now and put the right parts on your bench the first time. No wasted trips to the dealer. No box of wrong seals. Just the factory data that keeps your Michigan 125 III A running.