Clark-hurth 175B, 427D101, 438D101 1978 Parts Catalog

This is a parts catalog. If you are rebuilding a 175B Michigan tractor shovel, you need the factory part numbers. I have seen too many guys slap in a generic bearing because they couldn’t find the right number. Then the machine comes back with a hole in the housing. This catalog fixes that. It is 378 pages, published in 1978 by Clark-hurth, covering serial numbers 427D101 and after, and 438D101 and after. It is not a reprint. It is an original OEM factory document. Every diagram in here came off the same blueprint the assembly line used. You want the exact retaining ring? Page 73. You need the correct pump gear? It is in the hydraulic section. Browse our other factory manuals for related equipment at AutoRepairManuals main page.

Warranty and Serial Number Identification

Page 1 lists the machines this catalog applies to: 175B Detroit Diesel – 427D101 & After, and 175B Cummins – 438D101 & After. That is your starting point. The warranty text on page 3 spells out what Clark-hurth covers and what they don’t. Pay attention to the serial number break. If your shovel falls outside those ranges, this catalog may not match your build. Always verify the serial number plate before ordering parts. One wrong digit and you are chasing a seal that does not fit.

What Parts Are Covered in This Catalog?

A parts catalog is a map of the machine. This one maps the engine (both Detroit and Cummins varieties), the transmission, the torque converter, the axle and final drives, the hydraulic system, the steering, and the frame components. Each section shows an exploded view with numbered callouts. Next to each callout is the OEM part number, the quantity required, and sometimes a note about superseded numbers. No diagrams, no bullet lists – you get exact references. If you need a torque spec, this is not that manual. This is the parts bible. For a service manual, look at Clark Michigan Model 175B Parts Manual 2919-R1.

3 Reasons to Use OEM Parts Documentation

First reason: aftermarket catalogs guess. They might show a seal that is close but not the correct width. That leaks within a week. Second reason: factory diagrams show how parts interact – the order of shims, the location of dowel pins. Third reason: Clark-hurth updated parts over the production run. This 1978 edition includes revisions up to that year. You get the latest factory data available at the time. More recent updates are covered in CLARK Model 175B Michigan Tractor Shovel Parts Manual and Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs.

Get the Right Part Numbers for Your Serial Number

Write down your machine serial number before you open this PDF. The 175B has two major engine variants: Detroit (prefix 427D101) and Cummins (prefix 438D101). Within those, Clark-hurth introduced running changes. The catalog uses serial number breaks to tell you which part applies. For example, the torque converter housing changed at 427D101FSC. If you ignore the suffix, you order the wrong housing. Page 1 shows the breakdown. Highlight it.

Detroit vs. Cummins: Engine Parts Coverage

Two separate engine sections. The Detroit 6-71 and the Cummins V-504 use different cylinder heads, injection pumps, and oil pans. The catalog keeps them separate with clear headers. Do not assume a gasket set is the same. It is not. Cross-referencing the engine serial number with the catalog page saves you a return trip to the parts counter. For general engine principles, see Internal Combustion Engine. For the broader industrial equipment market, Automotive Industry Overview gives context.

Frequently Asked Questions

Does this parts catalog include torque specifications?

No, this is a parts catalog, not a service manual.

How do I find the correct part number for my 175B?

Look up your machine serial number, which is stamped on the frame. The catalog lists parts for 427D101 and 438D101 serial number prefixes. Cross-reference the section (e.g., ‘Transmission’ or ‘Hydraulic’) and then the exploded diagram. Each part has a number and quantity. Always double-check the serial number range, because Clark-hurth made several revisions. Page 1 shows the serial number applicability. Use that as your starting point.

Is this manual a reprint?

No. It is an original OEM factory document from 1978, not a copy.

Can I use this catalog for a 175B with a different engine?

The catalog covers both Detroit Diesel (427D101) and Cummins (438D101) engine configurations. If your machine has a different engine, you need a manual specific to that serial number range.

Stop wasting time with wrong parts. Download the Factory Manual from AutoRepairManuals today and get back to work. You need the correct numbers to keep that Michigan digging. This 378-page file gives you every part number Clark-hurth released for the 175B through 1978. No guessing. No returns. Just the right part the first time.