Description

Michigan 380 III Parts Catalog

If you’re ordering parts for a Michigan 380 III tractor dozer, you need the actual factory parts breakdown. Not a re-drawn diagram from a third party. Not a photocopy of a photocopy. An OEM Parts Catalog – 135 pages of part numbers, exploded views, and assembly details that match the machine on your shop floor. I’ve seen guys order “the right” brake assembly three times because they used an aftermarket source and got a mislabeled page. That costs billable hours. This catalog eliminates that.

The manual covers serial numbers 5RG101 and after. Clark Equipment Company printed this for a reason – so you can identify exactly which accumulator, which air line, which axle name plate you need. The table of contents runs tight: from Accelerator Pedal & Linkage (page 7) all the way through Battery Compartment Door (page 5). Every section is keyed to the machine’s original build. No guesswork. VOLVO BM 125C Wheel Loader Parts Catalog follows the same principle – factory data, not internet hearsay.

Brake System Parts: Pages 54–67

Brake assembly front and rear – page 54. Parking brake assembly – page 55. Brake pedals, controls, valve assembly – pages 61–63. The automatic brake adjuster assembly on page 66 gets overlooked by shops that try to reuse the old adjuster. Don’t. The factory part number is in this catalog. Brake air lines and accumulator are on pages 65 and 67. If you’ve got air leaks in the brake circuit, start with those pages. I’ve seen lazy techs replace the valve without checking the accumulator line. That’s a comeback waiting to happen.

Transmission Shift Control Accumulator – Page 35

Transmission problems on a 380 III often trace back to the shift control accumulator. Page 35 gives you the full assembly – seals, springs, pistons. You don’t need to guess whether the accumulator body is still available. The part number is right there. Order it once. While you’re in that section, check page 17 for transmission mounting brackets and air breather. Transmission air breather is on page 17; torque converter air breather on pages 31 and 33. Those breathers clog, cause pressure issues, and then someone blames the transmission. Use the catalog to cross-check breather part numbers before you tear down the gearbox.

Torque Converter Air Breather and Related Assemblies – Pages 31–33

Two pages dedicated to the torque converter air breather. That’s because Clark knew these parts fail. The breather cap, the element, the gasket – all called out. If you’re chasing converter overheating, don’t ignore these pages. Also note the “Air Breather – Torque Converter” reference in the index. It’s separate from the transmission breather. Don’t mix them up. Michigan 851 Parts Catalog – 72-Page Factory Parts Manual handles a different machine, but the philosophy is identical – you need the right part for the right system.

Axle Assemblies: Front Drive (Page 43) and Rear Drive Steer (Pages 47–49)

Front drive axle assembly – page 43. Rear drive steer axle assembly – pages 47 to 49. Each page shows the axle name plate location (page 43 for front, page 49 for rear). When you order an axle shaft or final drive gear, you need to match the serial number range. This catalog tells you which parts fit 5RG101 and after. The rear axle cradle is on page 3. If you’re pulling the rear axle to replace a bearing, get the cradle bushings while you’re at it. The part numbers for the cradle are in this book. Michigan 85III 1965 Parts Catalog – Factory OEM Parts Breakdown shows the same attention to detail for older models.

Why a Factory Parts Catalog Beats Aftermarket Diagrams

Aftermarket parts catalogs often combine multiple model years into one drawing. That’s fine for a rough idea, but not for ordering. The Michigan 380 III went through changes; the OEM catalog isolates the exact parts for your serial number. Look at page 2: it shows the machine layout – lift cylinders, pitch cylinder, blade, C-frame. An aftermarket site might show a different blade geometry. The factory drawing is dimensionally accurate. When you call a distributor with the part number from this catalog, you get the right box. Automotive Industry Overview might tell you history, but this book tells you the part number.

Who Needs This Manual – and Who Doesn’t

You need it if you own or maintain a Michigan 380 III tractor dozer. Field mechanics, shop owners, equipment dealers. You don’t need it if you’re just changing oil – but even then, knowing the correct oil filter part number (from the engine section) saves a trip to the parts store. Beginners can use this catalog because each assembly is exploded with callouts. No interpretation required. The manual assumes you have basic mechanical sense. Automotive Industry Overview provides context, but this manual provides part numbers.

Source Authenticity: Original OEM Print

Clark Equipment Company published this parts manual – No. 2456. Printed in the U.S.A. The file we provide is a direct scan of that original. No re-drawing, no re-labeling. The index lists every component alphabetically, from Accelerator Pedal to Battery Compartment Door. Compare that to a third-party PDF that claims to cover “all 380 models” and leaves out the brake air lines accumulator. This catalog includes it, page 67. That’s the difference between a job done once and a job done twice.

Does this parts catalog include torque specifications for bolts?

This is a parts catalog, not a service manual. It lists part numbers and exploded assembly views. Torque specs are not included. For torque values, you need the corresponding service manual for the 380 III. However, the catalog references torque-sensitive components like brake assemblies and transmission shift accumulators, so having the correct parts directly impacts the torque application process.

How many pages does the manual have?

135 pages.

Can I use this manual to rebuild the transmission?

No. This manual is strictly for parts identification. It shows the exploded diagram and part numbers for the transmission shift control accumulator, but it does not include assembly instructions or clearance specs. You need the factory service manual for rebuild procedures.

What machine serial numbers does this cover?

380 III G.M. – 5RG101 and after. The serial number is printed on the machine’s name plate. If your dozer falls outside that range, you need a different catalog. The manual explicitly states this on page 1.

Access the Factory Manual – the exact OEM parts catalog that Clark shipped with every 380 III. Stop guessing part numbers and chasing wrong parts. This is the file your distributor uses to sell you the right brake assembly, the right accumulator, the right axle seal.