Description

Clark-hurth 380B Parts Catalog – Factory OEM Specs for Tractor Dozer

If you are wrenching on a 380B and need the right part number—not a guess from a third-party list—this is the book. I have torqued head bolts on enough heavy equipment to know: the wrong part costs you time and can put a machine down longer than it should. The Clark-hurth 380B Parts Catalog is the original factory document, 341 pages of exploded views and part numbers that Clark Equipment published for the Michigan 380B Tractor Dozer. No reprints, no scanned copies that lose resolution on the small print. You get the exact layout the dealer used to pull parts in 1975 or whenever that machine rolled off the line.

I have seen guys try to match parts from a generic aftermarket catalog and end up with a seal that fits the wrong housing. That mistake costs you a weekend and a second trip to the parts counter. This manual eliminates that. It covers three specific machine serial number ranges: 380B Cummins 418F, 380B Cummins 484B, and 380B Detroit 434C. You record your own serial number on page 1 and then cross-check every component against the factory drawing.

Parts Breakdown: 341 Pages of Factory Drawings

Each major assembly gets its own section in this Parts Catalog. You will see the transmission, final drives, steering system, blade hydraulics, engine mounting, and more. The drawings are line-art with callouts pointing to each piece. Next to each callout is a part number and the quantity needed. That is the only way to order from Clark or any dealer that stocks genuine parts. Page numbers run through all 341—no missing sections, no foldout pages that got lost in a scan.

I have used factory parts catalogs for thirty years. The difference between this and a third-party compilation is night and day. Aftermarket catalogs often list a generic part that “fits” multiple models. That might work for a light-duty truck, but on a tractor dozer you need the exact bearing or seal. One wrong ID on a seal and you are chasing leaks. This manual gives you the Clark part number, and from there you can cross-reference to a current supplier if Clark no longer stocks it. The point is, you start with the right number.

Does This Catalog Cover Your Machine Serial Number?

Check the data plate on your 380B. The manual lists three engine-configuration variants: Cummins 418F, Cummins 484B, and Detroit 434C. If your serial number falls within one of these groups, you are covered. The first page shows a blank for you to write in your machine serial number—5C 8003GAC795 is the example in the original print. That tells me Clark intended this to live in the machine’s glove box or tool compartment. It is not a coffee-table book. It is a working document meant to get dirty.

If your machine has a serial number that does not match, you might need a supplement. But for the bulk of 380B units built, this catalog is the correct source. I have seen some online listings try to sell the same PDF for multiple models—that is a red flag. Clark made specific catalogs for a reason. This one is specific to the 380B with those engine families.

3 Reasons to Trust Clark’s Own Parts Manual

First, it is the factory publication. Clark Equipment Company printed this. The warranty statement in the front pages spells out exactly what Clark would replace and for how long. That gives you confidence the part numbers were proofed against the actual production line. Second, the parts breakdowns show subtle variations between the three serial groups. A bracket that fits the 418F may not fit the 484B—the drawing shows the difference. Third, the manual includes the correct calling procedures for warranty parts. If you are still within warranty, you need this document to make a claim.

Third-party catalogs often ignore these variations and show one part for all machines. That is how you end up with a hydraulic line that is two inches too short. I have been there. It is not fun to explain to the operator why the dozer is down another day.

Warranty Language: What Clark Expects from You

The warranty page in this catalog is worth reading. Clark states that parts must be free from defects in material and workmanship for six months from first use. If you need a replacement part under warranty, the labor to remove and install it is also covered. But note the exclusions: abuse, accident, failure to maintain, or failure to use the product according to instructions voids coverage. That means if you install a part from a non-Clark source and it fails, you are paying for the repair yourself. The manual itself is the proof of what Clark considers correct installation.

The catalog also lists the terms for replacement parts—warranty resets for the replacement part, but labor coverage ends after the original six-month period. This is the kind of detail you only get from an OEM document. It is not sexy, but it saves you money when you have to deal with a failed component.

Using Part Numbers to Avoid Costly Downtime

When you order parts from the dealer, hand them the exact Clark number from this catalog. Do not describe “the thing behind the left access cover.” Giving a part number cuts the conversation to ten seconds. More importantly, it eliminates the chance of getting a superseded part that needs a modification. The catalog sometimes includes revision notes or supersession numbers in the later pages. I have seen those notes save people an hour of fabrication time.

Also, if you are rebuilding a transmission or final drive, the parts catalog shows you every seal, bearing, and snap ring in the assembly. Lay it open on the bench next to the service manual for that machine. Together they are the complete work set. Check out Clark Michigan 380B Wheel Dozer Parts Manual if you need the service procedures themselves. For electrical or powertrain specifics, the Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs might cover some shared components. And for older models, Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs is another factory document.

If you want to understand more about how these machines fit into the broader construction equipment world, read the Automotive Industry Overview and the Internal Combustion Engine article. But for your 380B, this catalog is the bedrock.

How many pages is the Clark-hurth 380B Parts Catalog?

341 pages.

Does this catalog include engine service procedures?

No, it is strictly a parts catalog—exploded views and part numbers. You need the separate service manual for overhaul steps. The parts catalog complements the repair manual by showing you exactly which pieces to order.

Can I use this catalog to cross-reference aftermarket parts?

Yes. Once you have the Clark part number, you can give it to any aftermarket supplier that cross-references OEM numbers. That is faster than reading a generic interchange list. But be aware that aftermarket parts may not meet Clark’s original specifications. If the machine is still under warranty, use only Clark parts as listed here.

What if my 380B serial number is not one of the three listed?

Then this catalog covers a different production run. Clark issued separate parts catalogs for each major serial break. You need to find the catalog that matches your machine serial number exactly. Contact a Clark dealer or search for a supplement that covers your range.

Bottom line: if you are tearing down a 380B and need the right part numbers, you need the factory source. Do not waste time with generic silhouette drawings that leave you wondering. Access the Factory Manual and keep it on your workbench. That 341-page book will pay for itself the first time you order the correct bearing instead of a close match.