Description

TCM H15RMT000, H15RAT000, H20RMT100, H20RAT100, H25RMT200 Parts Catalog

Nothing worse than opening a box of parts that don’t fit because you guessed the number. I’ve seen it too many times. A mechanic orders a cylinder head gasket by model name alone, then finds the engine has a different block casting. This TCM Parts Catalog for the H15RMT000, H15RAT000, H20RMT100, H20RAT100, and H25RMT200 gasoline engines puts the factory part numbers in your hands. No guessing, no third-party reprints. Original OEM data from TCM Corporation.

168 Pages of Factory Part Data

This catalog runs 168 pages. Each page is an exploded diagram with a corresponding part number list. You get the exact nut, bolt, gasket, sensor, and seal – all referenced to the original TCM drawing. The catalog uses standard abbreviations: ASSY for assembled unit, O.S. for oversize, U.S. for undersize, STD. for standard. Page 2 defines every symbol. If you need an oversize piston, the catalog flags it. No need to cross-reference a generic aftermarket list that lumps together three different engine revisions.

What Engine Variants Are Covered?

The catalog covers the base models H15RMT000, H15RAT000, H20RMT100, H20RAT100, and H25RMT200. It also includes sub-variants like H20RMT102, H20RMT101W, H25RMT201W, and many more – you can see the full list on page 1 of the OCR excerpt. Applicable forklift models are listed in a table on page 4: FG10T19, FG15T19, FG18T19, FG20T17, FG25T17, FG15C19, etc. Cross-reference your machine serial number against that table to confirm fitment. TCM’s own data is the only source I trust for this.

For a deeper look at how internal combustion engines function, check the Internal Combustion Engine overview.

Using the Catalog: FIG Number to Part Number

The manual explains exactly how to find a part. Start with the Contents, locate the FIG number (illustration number), then turn to that page. The illustration shows the assembly; the list below it gives the part number, description, and quantity. If you know the part name but not the number, use the Index. If you know the location but not the name, the FIG number leads you there. No ambiguous drawings – these are TCM’s own line art. The catalog also includes Japanese text with English translation, so if you encounter a JIS bolt spec, it’s right there. Page 2 details the procedure.

OEM Documentation vs Aftermarket Parts Lists

Aftermarket parts catalogs often combine multiple engine families into one book, leaving out revision letters and supersession history. This is TCM’s own catalog – the same document their dealers use. The part numbers are the ones stamped on the original components. When you order a water pump or a carburetor kit, you get the number that matches your engine serial number. The catalog notes that specifications may change without notice, but the base numbers are factory-correct. I’ve seen enough misordered head gaskets to know the difference. For more on the broader automotive industry and parts sourcing, see the Automotive Industry Overview.

Get the Serial Number Before You Order

Page 2 emphasizes: specify machine serial number and engine serial number. The engine number is stamped on the cylinder block. Ignore that and you risk ordering parts for a different engine variant. The catalog lists multiple sub-models under each base number – H20RMT303, H20RMT305, etc. – and each may have its own parts. Write down both serials before you flip a page. This is where most people screw up. Don’t be that guy.

Related manuals for TCM forklifts include the TCM H15/H20 Engine Parts Catalog, the TCM FD60Z8 FD70Z8 FD80Z8 FD100Z8 Parts Catalog – 650 Pages, and the TCM Isuzu-4218A-E Parts Catalog – 478 Pages OEM Factory Manual. Each covers different models.

Can I use this catalog for other TCM engines?

No. This catalog is specific to the listed H15-H25 gasoline models.

How do I know if my engine is one of the listed variants?

Check your engine’s serial number against the applicable model table on page 4. The catalog includes sub-variants like H20RMT102 and H25RMT201W, but if your engine number doesn’t match any prefix in the list, you need a different catalog. Cross-reference the machine model as well – the table lists forklift models like FG10T19, FG15T19, etc. The engine serial number is stamped on the cylinder block. Write it down before you order.

You need the right part the first time. Access the Factory Manual and keep it on your bench – next to your torque wrench, where it belongs.