Description

Clark-hurth 275A Parts Catalog – 151 Pages of Factory Specs

If you have ever tried rebuilding a Clark-hurth 275A using a reprint manual that leaves out half the part numbers, you know the frustration of wasted hours and wrong parts. That is why I keep the factory Clark-hurth 275A Parts Catalog on my bench. It is 151 pages of factory sourced diagrams, part numbers, and assembly breakdowns – not some third-party guesswork. Every time I order a replacement for a transmission or brake component, I open this catalog to verify the exact part number. Saves me from ordering the wrong piece and holding up the job.

That is 151 pages of factory data.

What This Parts Catalog Actually Contains

This is not a service manual with step-by-step procedures. It is a parts catalog. That means exploded views with callouts and part numbers for every nut, bolt, seal, and assembly on the 275A tractor shovel. You get groups like “Clutch Covers, Transmission” on page 23, “Control Valve, Hydraulic” on page 35, and “Cylinder, Boom” on page 61. Need the seal kit for the steering cylinder? That is under “Cylinder, Steering” on page 61. The catalog organizes everything by system – transmission, brake, valve, cylinder – so you can find what you need without flipping through a generic index.

7 Systems Covered – From Transmission to Brake

The TOC lists over 50 group headings, but the core mechanical systems include:

• Transmission – clutch covers, control cover, converter charging pump, hydraulic system (page 64)
• Brake – front and rear air chambers, parking brake controls, air lines
• Valve – hydraulic control valve, control levers and linkage
• Cylinder – boom, bucket, steering – each with dedicated pages for seals and rods
• Differentials – front drive and rear drive steer axle assemblies
• Drive shafts – low range, high range, input drive
• Engine accessories – fan, by-pass oil filter, hourmeter, support parts

Each group lists the part number, description, and quantity required. For a machine that has been in the field for decades, having the correct OEM reference is the only way to be sure you are ordering the right piece. Aftermarket catalogs renumber parts – I have seen that cause a week of downtime on a job site.

Valve and Cylinder Groups – Exact Part Numbers

Hydraulic valve assemblies are notorious for having tiny internal parts that look identical but have different revisions. The catalog breaks down the control valve into individual components – spools, springs, plugs. For the cylinder groups, you get the complete assembly plus the optional seal kits. If you are rebuilding a boom cylinder, turn to page 87. The drawing shows each seal, wear ring, and gland. Match the part number from your old parts to the catalog and you avoid ordering a kit that does not fit. The same applies to the bucket cylinder on page 61 and the steering cylinder.

Why OEM Documentation Beats Aftermarket Reprints

I have been burned by aftermarket reprints that resize drawings so part numbers become unreadable, or that skip entire sections to save paper. This is an original Clark Equipment publication – scanned from the factory print. The font is crisp, the part numbers are legible, and every page matches the original No. 1343 manual. The index on page 3 tells you exactly where each group lives. You want to find the “Converter and Transmission Hydraulic System”? It starts on page 64. No guesswork. That matters when you have a machine down and the customer is waiting. If you work on industrial equipment, you need this level of accuracy. For a broader perspective on industry standards, check the Automotive Industry Overview – but for this specific machine, the factory catalog is all you need.

Three Reasons to Choose the Factory Manual

1. Accuracy: Every part number is the OEM number used by Clark-hurth. No cross-referencing to unknown aftermarket codes.
2. Completeness: 151 pages cover everything from the air cleaner cap to the differential carrier. The rear drive steer axle alone has two pages for differential and carrier (53, 55).
3. Time savings: The index is alphabetical by component name. “Brake Assembly, Front” on page 5. “Bucket Cutting Edges” on page 84. You find the part, order it, done.

If you need related manuals for other models, check the Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs or the Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs. For a more recent version of the 85A series, look at Clark-hurth 85A, 85A1 1978 Parts Catalog – OEM Factory Specs. And if you want to understand the internal combustion engine theory behind the machine, the Internal Combustion Engine article is a good reference.

Frequently Asked Questions

Does this catalog include torque specs for reassembly?

No. This is a parts catalog, not a service manual. It lists part numbers and quantities. For torque values and repair procedures, you need the corresponding service manual for the 275A.

How do I use the index to find the correct part for my transmission?

Look up “Transmission” in the index – you will find entries for Clutch Covers on page 23, Control Cover on page 58, and Converter and Transmission Hydraulic System on page 64. Each of those pages has an exploded diagram with callouts. For example, if you need the clutch cover gasket, find the part number under “Clutch Covers, Transmission” on page 23. The diagram shows the cover, bolts, and gasket. Write down the part number from the list adjacent to the callout. Then order that number from your Clark distributor. But be aware: Clark used multiple revisions. Always check your machine’s serial number against the revision notes in the catalog. The index also lists “Transmission” under other groups like “Control Cover” – if you don’t see it in one place, try another. That’s why the catalog has 151 pages – it cross-references everything. Using this method, you avoid ordering the wrong part and save time.

Every shop that works on Clark-hurth 275A machines needs this catalog on hand. Access the Factory Manual now and keep the right part numbers at your fingertips.