Description

Clark-hurth T12000, T18000 Parts Catalog – Factory OEM Specs

I’ve been inside more Clark-hurth transmissions than I care to count. When a backhoe comes in with a burnt-up clutch pack on a T12000, the first thing I grab is a parts catalog. Not a generic aftermarket book with fuzzy drawings and wrong dimensions. I need the exact group number, the correct part revision, and the bolt size that matches the original. That’s what this Parts Catalog delivers. 529 pages of exploded views, group part numbers, and a numerical index that cross-references every piece in the T12000 and T18000 Clark Transmission family. You don’t guess what seal goes where – you find it on the page and order it. Period.

If you’ve ever wasted a week waiting for the wrong bearing because some reprint had the old supersession, you know why OEM documentation isn’t optional. This is the same book the dealer techs used. No translation errors, no “equivalent” substitutes that don’t fit. You get the Clark part numbers, the group numbers (like 267072 for the Converter Housing Group), and the exploded diagrams that show you exactly where each snap ring and washer lives.

T12000 Section 1 Contents: What You Get

Section 1 alone covers 11 model variants of the T12000: from the 1102-T12363-2 through the 1106T12366-100. Each subsection breaks down a specific group – Converter Housing Group (267072), Case and Plate Group (267338), Torque Converter Group (267164), Pump Drive Group (267396), Charge Pump Group (267078), Reverse Idler Group (267079), Forward/Reverse Shaft Group (267169), 3rd and Output Shaft Group (267185), 1st and 2nd Shaft Group (267082), Output Shaft Group (267083), Disc Brake Group (267270), Brake Caliper Assembly (246401), Electric Control With Modulation Group (267172), and Drive Plate Group (267086). Every part number is listed, every illustration is keyed. That’s the level of detail you need when the machine is down and the customer is watching.

T18000: 7 Sections of Transmission Parts

The T18000 models get Sections 12 and 13 (models 12.2HR18313-2 and 12.2HR18317-1). Same format – group numbers, exploded views, part callouts. If you’re working on a Gehl skid steer or a construction machine with the heavy-duty T18000, you’ll find the exact parts for the main case, clutches, shafts, and controls. No need to chase down a separate manual for the big brother.

Why Aftermarket Parts Catalogs Fail

I’ve seen reprint “catalogs” that combine multiple transmissions into one mess of mislabeled pages. They skip the numerical index. They crop the illustrations so the part numbers are cut off. This Clark-hurth document has a full Numerical Index starting on page 1-27. You look up the part number, it tells you the group and the illustration key. That saves hours of flipping. The format is clean – each section header includes the specific model number. If you’re ordering a part for a T12000 model 1102-T12366-5, you go to Section 4, not guesswork.

Does This Catalog Cover Both Transmissions Completely?

Yes. The TOC lists 13 sections total. Sections 1-11 are dedicated to T12000 models, Sections 12-13 are for T18000 models. The entire document is searchable as a PDF, but the structure is built for paper reference – you can jump to the group number in seconds. Every part that Clark ever released for these transmissions is documented. If you’re restoring an older machine that’s been dropped from the current parts system, this catalog may be the only place the original part numbers still exist.

3 Reasons to Use OEM Factory Parts Data

First, supersession accuracy. Clark updated parts over the years; the catalog shows the latest part number for each group. Second, fit confirmation. The exploded diagrams show orientation and stack height – things a generic list never gives you. Third, safety. A brake disc group (267270) or a caliper assembly (246401) has to be right. The wrong friction material or piston diameter can cause a failure that puts a operator at risk. This catalog eliminates that risk.

FAQ

Can I use this catalog to identify parts for a T12000 transmission that has been modified?

If the transmission still uses original Clark case and shafts, the part numbers in the catalog will match. Modifications after market may use non-Clark parts that aren’t listed. You’ll need to check the group and compare to your current assembly.

Does this catalog include torque specifications?

No. It’s a parts catalog – it gives part numbers, not assembly torque values. You need the service manual for torque specs.

Related manuals you may need: Clark-Hurth T12000 Series Transmission Parts Catalog, Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs, and Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs. For broader context on heavy equipment manufacturing, see Automotive Industry Overview and also Automotive Industry Overview.

When you’re stuck with a transmission that won’t drive and you need the right shift fork or thrust washer, this is the document that keeps the job moving. Stop ordering by guesswork and hoping it fits. Get the factory part numbers in your hands. Access the Factory Manual now and keep your T12000 or T18000 running on original spec parts.