Description

Michigan 175IIIÀ Parts Catalog

I’ve been turning wrenches long enough to know the difference between a factory parts catalog and some aftermarket photocopy that skips half the numbers. When you’re elbow-deep in a Michigan 175IIIÀ and the brake valve starts leaking, you don’t have time to guess which seal kit fits. You need the exact part number – no ambiguity, no cross-reference that points to a discontinued item. That’s why this Parts Catalog exists. Printed by Clark Equipment Company, it’s the same book the dealer used when these machines were new. 150 pages, every illustration indexed by group. You want the right pilot for the brake valve? You want the exact seal for the downstream pressure regulating valve? It’s in here, not in some forum post from 2007.

What the Brake Group Covers

Brakes on a loader aren’t something to half-ass. The manual dedicates a full group – from Brake Assembly (page 1B12) to Brake Air Lines, Brake Valve and Controls, even the Brake De-Clutch Valve and Parking Brake assembly. Every part listed with an OEM number, and the diagram shows exactly how it goes together. If you’re replacing shoes, actuators, or air lines, you pull the group number and order the factory part. No substitutions, no “this should work.” I’ve seen too many shops throw in a generic seal that blows out at 150 PSI. Don’t be that guy. This catalog keeps you on factory spec.

Valve Group: Control Valve Assembly and More

Hydraulic control valves are the heart of the boom and bucket. The Valve Group covers Control Valve Assembly (section 2E2), Valve Control Levers and Linkage (2E6), and Pressure Relief Valve—Steering (2E7). Each item has a part number, quantity required, and illustration reference. If you need the spool, the spring, or the entire cartridge, you find it here. The Pressure Relief Valve—Steering alone is worth the price of access – one wrong spring rate and your steering gets lazy or blows seals. Don’t guess. Use the factory breakdown.

150 Pages of OEM Part Listings – How the Index Works

The manual uses a two-letter prefix system: 1A for accelerator, 1B for axle and differential, 1C for brake and bucket, 1D for cab and converter, 1E for cylinders, 1F for frame and fuel, 1G for hydraulic, 2B for instrument panel and mid-mount, 2C for radiator and seat, 2D for steering and transmission, 2E for valve and wheel. That’s not random – it’s organized by machine system. The index on page 2 and 3 lists every group and its starting page. You want the Hydraulic System—Steering? Section 1G6. Need the Transmission Assembly? Section 2D6. The logic is simple: find the system, flip to the section, read the diagram. Every part has a line item. That’s 150 pages of factory precision, not a generic “exploded view” that leaves out the retaining ring.

Does This Catalog Cover the Engine and Transmission?

It covers engine accessories and support parts (1E11) and engine oil pressure line (1E13). For transmission, you get the complete group: Transmission Assembly (2D6), Case and Internal Tubing (2D8), Control Cover Assembly (2D9), Control Levers and Linkage (2D10), First and Second Clutch Group (2D13), Input—Reverse, Third and Fourth Clutch Group (2D14). If you are rebuilding a powershift transmission, these pages give you the clutch piston seals, the snap rings, the bearing numbers – everything you need to source parts before you pull the unit. No surprises halfway through the job.

Source Authenticity: Why This Isn’t a Reprint

This file is a scan of the original factory manual printed for Clark Equipment. The OCR excerpt on page 1 shows the exact header: “PARTS MANUAL No. 5021 Model 175IIIA Articulated Tractor Shovel.” That means the part numbers match the day the machine left the assembly line. Aftermarket catalogs often re-number or use superseded parts without warning. This one keeps the original reference – critical if you are dealing with NOS (New Old Stock) inventory. For a deeper look at how factory documentation supports the Automotive Industry Overview, this catalog is a textbook example of proper engineering documentation. No guesswork, no shortcuts.

3 Systems That Depend on Accurate Part Numbers

Brake – one wrong O-ring can cost you a line failure. Valve – wrong pressure relief spring changes steering response. Hydraulic – pump and cylinder seals must match original specs. This catalog gives you the factory numbers for all three. Also covers the downstream pressure regulating valve assembly (1D14), hydraulic reservoir filter assembly (1F12), and steering oil cooler (2D2). If you are rebuilding a bucket cylinder, the Bucket Cylinder Assembly (1E3) has every seal and wiper listed. Count on it.

Frequently Asked Questions

Does this catalog include torque specifications for bolts?

No. This is a parts catalog, not a service manual. It lists part numbers and quantities. For torque values, you need the factory service manual. But having the correct part number is the first step – installing the wrong bolt with the right torque still fails.

Can I use this catalog to identify hydraulic hose part numbers?

Yes. The Hydraulic System sections (1G2, 1G6, 1G13) show hose assemblies and fittings with OEM numbers. If you need a replacement boom hose, the diagram will give you the exact assembly number. Order from a dealer or cross-reference to a Gates or Parker number.

Will this work for a 175III with a different suffix letter?

The manual is specific to 175IIIÀ. Small letter suffixes sometimes indicate running changes in hydraulics or brakes. If your machine is a 175IIIB or 175IIIC, some parts may differ. Compare the axle and brake group numbers with your machine’s serial plate. When in doubt, call a dealer with your serial number.

How many pages and what format?

150 pages in PDF format, original scan from the printed manual. Clear diagrams with part callouts. No watermarks or missing pages. You can print individual pages for the workbench.

Look, if you are keeping a Michigan 175IIIÀ in the fleet, you need this catalog. Without it, you are ordering parts blind – and that costs time and money. Every brake line, every control valve spool, every transmission clutch pack – the factory numbers are here. Don’t waste a day cross-referencing old numbers. Access the Factory Manual now, and keep it on your tablet or printed in a binder. Your future self, covered in hydraulic oil at 5 PM, will thank you.

Related manuals: VOLVO BM 125C Wheel Loader Parts Catalog, Michigan 851 Parts Catalog – 72-Page Factory Parts Manual, Michigan 85III 1965 Parts Catalog – Factory OEM Parts Breakdown

External reference: Automotive Industry Overview