Description

Clark-hurth 55 IIIA Parts Catalog

If you have ever tried to order parts for a 55 IIIA tractor shovel using some aftermarket drawing or a parts list copied from a forum, you already know the problem. You get the wrong bearing, the wrong seal, the wrong brake head assembly. Then you eat the restocking fee and lose a day. That stops right here. This is the Clark-hurth 55 IIIA Parts Catalog – 96 pages of factory-issued part numbers, exploded views, and assembly references. Produced by Clark Equipment Company, Construction Machinery Division. Not a reprint. Not a scan someone ran through OCR and published. This is the actual document that Clark distributors used to fill orders. Page 3 tells you: always furnish the machine serial number. That is the level of detail we are talking about.

Indexed by System – Why the Factory Index Matters

Open the manual and the first thing you see is a full index – not a generic table of contents – a system-by-system index that covers everything from the Accelerator Pedal and Linkage (page 11) to the Cab Wiring Harness (page 79,81). You need a new brake valve? Look under “Brake Valve, Air” – page 50. Need the bucket seat assembly? Page 69. The index uses the same language the parts counter guys speak. That means you can walk into a Clark distributor, read off a part number from this catalog, and walk out with the correct part. No more “what serial number?” – you already wrote it down because page 3 told you to.

Engine and Accessories – What This Parts Catalog Covers

Under the Engine section you will find the accessories group – air cleaner assembly, alternator belts, battery cables, and the air compressor. The manual lists each sub-assembly with its own page reference. For example, the Air Cleaner Assembly is on page 8, and the Battery Box is on page 63. If you are rebuilding the engine compartment or replacing the cooling system, you can order the exact radiator cap (page 9) and fuel tank cap (page 14). This is not a repair manual – it does not tell you how to rebuild the engine. It tells you what parts are needed and what they look like in the assembly drawing.

Brake Systems and Valve Assemblies – Real-World Use Case

Here is where a parts catalog saves you real time. The Brake system on a 55 IIIA is complex – air brake pedals, air brake valves, brake head assemblies (left and right), and a parking brake assembly with its own lever and controls. The index breaks the brake system into separate entries: “Brake Head Assembly – L.H.” on page 44, “Brake Head Assembly – R.H.” on page 45, and “Brake Torque Torque Plate Assembly” on those same pages. When you have an air brake failure, you do not need to guess whether the problem is the valve or the pedal. You look up “Air Brake Valve” on page 50, order the part number shown, and move on. A Valve like the “Air Valve Assembly, Bucket Leveler” is on page 7 – that is the kind of specificity that aftermarket parts lists never get right.

Does This Catalog Include Torque Specifications?

No. This is a parts catalog, not a service manual. Torque values are never listed because the manual’s purpose is to identify parts, not to provide assembly instructions. If you need torque specs for head bolts or axle nut settings, you need the corresponding Clark-hurth service manual. What you do get here are the exact part numbers and assembly breakdowns that let you order the correct Transmission air breather (page 19), torque converter air breather (page 29), and transmission case components. The “Transmission and Converter Filter Cartridge Kit” is shown on page 33. That alone saves you the headache of ordering the wrong filter because some aftermarket supplier listed a generic number.

How to Use This Manual on the Workbench

Keep this PDF open on your tablet or printed next to the machine. When you disassemble a sub-assembly – say the “Bucket and Boom Hydraulic System” (page 65) – lay out the parts on a clean surface and reference the exploded view. The manual lists every component in the bucket cylinder assembly on page 66, the boom cylinder assembly on page 67, and the hydraulic pump on page 62. Write the part numbers on a tag before you toss the old parts. Then order from your distributor. This manual does not have step-by-step procedures, but it has the identity of every bolt, seal, and bearing in the machine. For a tractor shovel that is 30–60 years old, that is the difference between a two-day repair and a two-week search for parts.

Source Validity – Why OEM Documentation Beats Aftermarket

Aftermarket parts catalogs often combine multiple models, omit serial number breaks, or substitute generic part numbers. This manual is from Clark Equipment Company, Construction Machinery Division. It was printed for dealer use. The index includes every sub-section – from “Bucket Cutting Edges” (page 6) to “Cab Head Lamp” (page 79,81). There is no ambiguity about which part fits a 55 IIIA with GM engine (serial 416A101 and after). If you are working on this machine, you need the exact part number that Clark assigned. Anything else is a gamble. I have seen too many second-shift teardowns stop because someone ordered a brake valve that was off by one port thread. Do not be that guy.

Does this parts catalog include torque specifications for assembly?

No. This is a parts catalog, not a service manual. It lists part numbers and assembly references, but torque values are not included.

How do I use the index to find brake parts for the 55 IIIA?

Look for “Brake” entries in the index. For example, “Brake Head Assembly – L.H.” indicates left-hand brake head, page 44. The index breaks the system into sub-assemblies – air brake pedals, air brake valve, parking brake controls. Each has its own page number. Cross-reference the exploded views on those pages to identify the exact part number you need. Always have the machine serial number ready, as stated on page 3.

You have the machine. You have the tools. Now get the right parts the first time. Access the Factory Manual from AutoRepairManuals and stop wasting money on wrong parts.

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External references: Automotive Industry Overview and Internal Combustion Engine.