Description

Clark-hurth 55R, 55AWS 1980 Parts Catalog – Factory OEM Parts Breakdown

If you’ve ever spent an hour digging through aftermarket cross-reference charts only to get a part that doesn’t fit the bore, you know the pain. That’s exactly why this 1980 Clark-hurth 55R, 55AWS 1980 Parts Catalog belongs on your bench. I’ve been turning wrenches since before catalytic converters were a thing, and I can tell you: the only way to keep a Michigan 55R or 55AWS tractor shovel running is to start with the right part number. This is the factory book – 147 pages of OEM illustrations and part breakdowns that let you order exactly what Clark-hurth stamped on the casting.

147 Pages of Factory Part Numbers

This isn’t a reprint or a scanned mess. It’s the original Parts Manual No. 110, printed in the USA in 1980. Every page – from the Index on grid 1A1 through the last brake system page at 1D14 – comes from Clark-hurth’s Construction Machinery Group. You get exploded diagrams with callouts, part numbers, and quantities. Need the front axle assembly? Grids 1A13 through 1B2 give you the front axle breakdowns with TP3245 and TP3246 illustrations. For the rear axle, grids 1B3 and 1B4 have TP3275. No guessing.

What Systems Does This Parts Catalog Cover?

It covers the whole machine. Engine Controls from grid 1A5 to 1A7 – includes TP2489 and TP3502 illustrations for the throttle linkage and shutoff. Air Cleaner Connections on 1A8-1A10 with TP3269 and TP2205. The Engine itself isn’t disassembled here (that’s in the service manual), but all the mounting and control parts are listed. Then you get the heavy stuff: front and rear axle assemblies, differential and carrier sections (grids 1B5-1B10), planet carrier assemblies (1B11-1B13). Front end equipment on 1C2-1C3. The brake system takes up the rest – grids 1C5 through 1D14 cover air reservoir, brake assemblies front and rear, parking brake, foot brake controls, and the main brake system with multiple TP drawings.

Front and Rear Axle Assembly Breakdown

Axle work on a 55R or 55AWS is not a weekend job. The front axle assembly is split across grids 1A13, 1A14, 1B1, and 1B2. You’ll find the differential carrier (front) on grids 1B5-1B8 with TP2530 drawings. Rear differential carrier on grids 1B9-1B10 uses TP2236. Planet carrier assemblies are on 1B11-1B13 with TP3247 and TP3250. Each grid includes a parts list with the OEM number – no aftermarket abbreviations. If you’re rebuilding a planet carrier, this catalog tells you which bearings and seals to order.

Use the Index Before You Order Anything

Page 1A1 is the index. Start there. Every part in the catalog is keyed to a grid location. For example, if you need the brake wheel cylinder for the front, grids 1C13 and 1C14 show two views with TP2226. The rear wheel cylinder is on 1D1 with TP2227. The parking brake linkage runs from 1C11 to 1C12 with TP3330 and TP2134. The main brake system occupies grids 1D2 through 1D14 – multiple pages, multiple TP numbers. Cross-reference your machine serial number to make sure you’re ordering the right revision. I’ve seen guys skip that step and end up with a cylinder that doesn’t match the bolt pattern.

Brake System: Factory Part Numbers for Every Component

The brake section is thorough. Air reservoir on grid 1C5 (TP3566). Front brake assembly on 1C6 (TP2224) and 1C7 (TP2247). Rear brake assembly on 1C8 (TP2225). Parking brake assembly on 1C9 (TP3540). Foot brake controls on 1C10 (TP2505). Parking brake linkage and lever on 1C11-1C12. Wheel cylinders front and rear on 1C13-1D1. Then the main brake system – grids 1D2 to 1D8 and 1D13-1D14 – includes the master cylinder, lines, and valves. If you’re replacing a brake shoe or a seal, this is the only source for the correct Clark-hurth part number.

Who Needs This Catalog?

If you own or maintain a Michigan 55R or 55AWS tractor shovel – whether it’s in a gravel pit, a scrapyard, or a municipal lot – you need this catalog. DIY mechanics who want to avoid ordering the wrong spindle or brake drum will save time and money. Small shops that work on older Clark-hurth equipment can keep a digital copy on the shop tablet. The part numbers match the factory castings, so you won’t be guessing at thread pitches or bearing sizes. Pair it with the service manual for torque specs, but for parts ordering, this is the only document you need.

Source Authenticity – Why This Matters

Aftermarket parts catalogs are often copied from this original, but they introduce errors. The inter-office memo on page 3 of this catalog, dated March 12, 1980, from Don Lape (Parts Administrator) to John Thorpe, confirms this is the official stat release for Parts Manual 110. The page listing on page 5 shows every grid and its illustration number. That level of traceability is what you get with an OEM document. I wouldn’t trust a third-party PDF for something as critical as axle parts. Stick with the factory source.

Frequently Asked Questions

Does this catalog cover the 55AWS model?

Yes. The cover says 55R and 55AWS, and the inter-office memo references both models. The parts listings apply to both.

How do I find the part number for the differential carrier?

Look at grids 1B5-1B8 for the front differential carrier and grids 1B9-1B10 for the rear. Each grid has an illustration and a table with part numbers.

Are torque specs included in this parts catalog?

This is a parts catalog only. It lists part numbers, quantities, and sometimes reference notes, but not assembly torque values. You’ll need the corresponding service manual for torque specs. That said, the part numbers themselves are vital – ordering the wrong bearing because you used a generic number will cost you a day.

Can I use this catalog to rebuild the brake system?

Yes, for parts identification. Grids 1C5 through 1D14 cover the entire brake system: air reservoir, brake assemblies, wheel cylinders, parking brake, and main system. Use the illustrations to identify the components, then order the OEM part numbers. For disassembly and reassembly instructions, the service manual is required.

I’ve been in the business long enough to know that the difference between a job that goes smooth and one that turns into a three-day headache often comes down to having the right part number in your hand before you start. This Clark-hurth 55R, 55AWS 1980 Parts Catalog gives you that. Whether you’re ordering a brake wheel cylinder or a planet carrier seal, the factory diagram and part number are right there. Don’t chase ghosts with aftermarket cross-references. Access the Factory Manual and get the job done right the first time.

For further reading on heavy equipment safety and maintenance standards, see the Automotive Industry Overview”>Automotive Industry Overview. For technical background on diesel engines in these machines, refer to Internal Combustion Engine”>Internal Combustion Engine.