Description

Michigan 55II Parts Catalog – Factory OEM Parts Breakdown

If you are restoring or maintaining a Michigan 55II tractor shovel, the first mistake you can make is guessing part numbers. I have seen guys bolt on a aftermarket brake shoe that looked close but didn’t match the spline count. That costs you a day of bleeding and a tow. This Parts Catalog is the original Clark Equipment publication – 98 pages of exploded diagrams and factory part numbers. Not a reprint from some third-party scanner who cropped the margins. You get the exact index that the dealer used in 1965. It covers every nut, seal, and cylinder group. If you touch the brake group without referencing this book, you are working blind.

Brake Group: Factory Part Numbers for Front and Rear

The Brake Group section is indexed as Brake Assembly — Front (1 B4) and Brake Assembly — Rear (1 B5). You also get Brake Lines (1 B7), Brake Controls (1 B8), Brake Master Cylinder (1 B9), Brake Wheel Cylinder (1 B10), and the Brake DE — Clutch Valve Assembly (1 B11). That last one is the dual-function valve that ties brake and clutch – a common failure point. The catalog gives you the exact Clark part number for the piston kit. You order that, you do the job once. You order a universal kit, you will be back in the shop next week. The catalog also covers the Parking Brake Lever Assembly and Parking Brake Controls (1 B13). If your parking brake won’t hold on a grade, start here.

Michigan 55II Parts Catalog: What You Get in 98 Pages

This is not a service manual. It does not tell you how to rebuild the transmission. But it does tell you exactly which part to order when you have it apart. The index lists 26 major groups from Accelerator Pedal and Linkage to Wiring Group. Each group has its own sub-index with part numbers and quantities. For example, the Converter Group lists the Converter Assembly (1 C11) and Pressure Regulator Valve Assembly (1 C12). If your converter slips, you can look up the regulator valve rebuild kit number right there. The Cylinder Group covers Boom Cylinder Assembly (1 C13), Bucket Cylinder Assembly (1 C14), and Steering Cylinder Assembly (1 D1). Each exploded view shows every seal, bushing, and rod. No guessing.

Index Breakdown – 7 Major System Groups

Flip to page 3 of the catalog and you see the full index. The systems are broken into: Axle Group (front and rear differentials, planet spider, tie rod), Brake Group (already covered), Converter Group, Cylinder Group, Engine and Accessories, Hydraulic Group (oil reservoir, steering system, transmission and converter system), Pump Group (bucket and boom pump, converter charging and steering pump), Radiator Group, Steering Group (drag link, pressure relief valve, steering gear, linkage), Transmission Group (assembly, mounting, controls, shift levers, control cover), Valve Group (control valve, levers), and Wheel and Tire Data, Wiring Group. That is 7 major categories with multiple sub-sections. Each page number in the index corresponds to the Clark numbering system (e.g., 1 B4). The actual PDF page numbers run from 1 to 98. If you need the part for the Bucket Leveling Master Cylinder, look under Bucket Leveling Master Cylinder (1 C4) – you will find the exploded view and the callout for each component.

Get the Right Part Numbers – Avoid Aftermarket Guesswork

I have seen aftermarket parts catalogs that list a single “fits all” part for the steering cylinder. The Michigan 55II uses a specific Steering Cylinder Assembly (1 D1) with a 2-inch bore and a 20-inch stroke. The factory part number is the only one that matches the rod end thread and port size. This catalog came from Clark Equipment Company – the original manufacturer. They printed it in the U.S.A. The part numbers in this book are the numbers that Clark stamped on the castings. If you walk into a parts counter with the Clark number, you get the right seal kit. If you walk in with a generic measurement, you get a maybe. For related heavy equipment parts manuals, check the VOLVO BM 125C Wheel Loader Parts Catalog or the Michigan 851 Parts Catalog – 72-Page Factory Parts Manual. Also see the Michigan 85III 1965 Parts Catalog – Factory OEM Parts Breakdown for older machines.

Transmission Group: Identifying the Correct Assembly

The Transmission Group starts with Transmission Assembly (1 F11) and includes Transmission Mounting Parts (1 F12), Transmission Controls (1 F13), Gear Shift Levers and Linkage (1 F14), and Transmission Control Cover (1 F14). If you are replacing the transmission, you need the assembly number. The exploded view shows every gasket, bearing, and snap ring. Note that the converter charging pump is listed in the Pump Group under Hydraulic Pump—Converter Charging and Steering (1 E12). That pump often fails due to debris. You can look up the pump cartridge part number here instead of disassembling twice. For a broader look at heavy equipment documentation, see the Automotive Industry Overview and Automotive Industry Overview on Wikipedia.

FAQ

Is this a repair manual or just a parts catalog?

It is a parts catalog. You need the separate service manual for repair procedures.

How do I use the index to find a part?

Start with the main index on page 3 of the PDF. Find the system group (e.g., Brake Group). Note the Clark reference number (e.g., 1 B4). Navigate to that section in the catalog. Each exploded view has numbered callouts. The parts list below each view gives the Clark part number, description, and quantity per assembly. Cross-reference that number with your local dealer or online parts supplier. Write down the number before you remove the old part – you will save a trip.

If you are serious about keeping that old Michigan running, you need the factory documentation. The 98-page parts catalog gives you every part number you will ever need for the brakes, transmission, hydraulics, and wiring. No aftermarket reprints. Access the Factory Manual now.