Description

Yanmar B55W 2001 Parts Catalog – OEM Factory Specs

If you’ve ever ordered a part for a Yanmar B55W and gotten the wrong injector pump or a seal that didn’t fit, you know the pain. I’ve been there myself, wasted a day waiting on a reorder because some aftermarket catalog had the wrong number. This Yanmar B55W 2001 Parts Catalog stops that. It’s the factory-issued document, printed in November 2001 as the 1st revised edition, and it contains every OEM part number, diagram, and reference you need to order the right piece the first time.

Page 1 of this 295-page manual states clearly: “Be sure to use Yanmar Genuine Parts in your maintenance servicing of Yanmar products.” That’s not marketing fluff – that’s a warning. Aftermarket parts might look the same, but the bore tolerance or heat treatment can be off. I’ve seen a cheap fuel injector pump fail in under 200 hours. Use the official catalog to cross-reference before you buy.

What This Parts Catalog Covers

The document is split into two main sections: Section I (Vehicle) covers the B55W chassis, hydraulics, cab, and undercarriage across 143 figure numbers. Section II (Engine) covers the 4TNE94-DBW engine in 17 figures. Each figure is an exploded view with callouts linking to a part number and description. Need the boost compensator for the injection pump? Look up Figure 8 in the engine section – it’s all there.

I’ve worked on enough wheel excavators to tell you: a parts catalog isn’t a repair manual. You won’t find torque specs or service procedures in here. But if you’re rebuilding a swing motor or replacing a hydraulic line, you cannot order parts without this book. Guessing the size or thread pitch costs you money.

Who Needs This Yanmar B55W Parts Catalog

This is for home garage guys who do their own wrenching and for shop owners like me who need correct numbers fast. If you own a B55W and plan to keep it running, you need this. The manual uses simplified illustrations, but every fastener, seal, and filter is listed with its OEM reference. One example: the fuel injection pump assembly (part number 4J6-01R-07A) is shown with all its subcomponents – screws, washers, even the bracket. That level of detail saves you from buying a whole pump when you only need the mounting hardware.

Beginners: this is the safest way to identify parts. Compare the exploded view to what’s on your machine, then order using the exact number. No more wandering around the parts counter with a greasy bolt in your hand.

OEM Authenticity vs Aftermarket Catalogs

I’ve seen third-party “parts catalogs” that mix up part numbers, use outdated illustrations, or skip the revision notes. Aftermarket documentation is a gamble. This is the real deal – Yanmar’s own 1st revised edition, published November 2001, and it superseded the 2000 edition. The catalog history on page 1 gives you the exact revision chain. That matters when you’re ordering superceded parts. A mechanic who doesn’t check revisions will end up with a part that was replaced two model years ago.

Check out related coverage for other Yanmar models: Ammann Yanmar B12 B17 Parts Catalog and Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs. For larger compact excavators, see Yanmar YB301 YB351 1991 Parts Catalog – 248 Pages OEM.

For broader context on the automotive equipment industry, visit Automotive Industry Overview. The machinery side of things follows the same principles: factory specs are the only reliable source.

Using the Manual: Reading the Illustrated Parts List

Page 2 explains the syntax. Each line gives a figure number, item number, part number, description, and quantity per vehicle. For instance: “1008021 FUEL INJECTION PUMP/BOOST (A) 4J6-01R-07A” – that’s the assembly. Below it, screws like “SCREW 8 X 16” are listed with Yanmar part codes. The catalog uses three columns (A, B, C) for different configurations or options. If your B55W has an optional boost compensator, you’ll see it under column (C). Take the time to read the key on page 2 – it’s not complicated, but skipping it leads to ordering mistakes.

Can I use this catalog to find service procedures like oil change intervals or torque specs?

No. This is a parts catalog, not a service manual. It does not contain repair procedures.

How do I know if my B55W matches the figures in this catalog?

Identify your machine’s serial number and compare it to the model applicability range listed in the preface. The catalog covers all B55W units built as of November 2001. If your machine is a later year, some components may have changed – Yanmar issues revision updates. Check the “Parts catalog history” table on page 1; if you have an earlier edition, this one supersedes it. For machines built after 2001, you might need a later supplement, but this catalog still covers the majority of common parts like filters, seals, and undercarriage components. I recommend cross-referencing with Yanmar’s online parts portal for any updated supersessions, but start here to get the base numbers right.

That’s what I tell every new tech who walks into my shop: start with the factory catalog. It’s the backbone of every repair. When you need to source a hydraulic cylinder seal kit for the B55W, you’ll pull the figure, grab the part number, and call your dealer with confidence. No wasted trips.

Stop relying on hand-me-down part numbers or faded labels. Access the Factory Manual from AutoRepairManuals and get the genuine Yanmar B55W 2001 Parts Catalog in your hands – digital, searchable, and ready to print. Your wallet and your machine will thank you.