Yanmar B22, B22-P, B22-C 1990 Parts Catalog – OEM Specs & Wiring

Description

If you’re elbow-deep in a Yanmar B22, B22-P, or B22-C crawler backhoe, you don’t need guesses. You need the exact part number for that worn-out seal, the correct figure reference for the wiring harness, and the factory specifications for the mounted engine. This 1990 Yanmar B22, B22-P, B22-C 1990 Parts Catalog is a 150-page document printed in October 1990 by Yanmar. It’s the same book the dealer used to order parts. Aftermarket part catalogs renumber things and drop details – this one doesn’t.

Specifications: B22-P and B22-C Dimensions and Capacities

Page 2 lays out the full specs for both the B22-P (rubber track) and B22-C (steel track). You get transport length (158.1 in), width (53.5 in for B22-P, 54.1 in for B22-C), height (91.3 in – 94.1 in), standard bucket capacity (0.06 cubic meters, roughly 1.7 bushels), max digging depth (92.9 in), and machine mass (4629 lbs for B22-P, 4894 lbs for B22-C). Engine is the 3TN75L-RB 3-cylinder water-cooled diesel. Those numbers matter when you’re ordering parts like a new blade or track shoes – get the wrong width and you’re waiting another week for the correct one.

Parts Name Section: Identifying Components by Figure Number

The PARTS NAME chapter (page 3 and onward) breaks down every subsystem by figure number. Radiator, air cleaner, electric parts, fan motor, fuel tank – each gets its own figure with callouts. For example, the fuel tank & tube assembly is Fig. 8. You look up the part number, cross-check it against the figure, and order the exact Yanmar piece. No wasted trips to the parts counter. This section also includes the color codes for Yanmar Saffron Yellow (Munsell 1.0Y7.5/11) and Charcoal Gray – use the wrong paint and the resale value drops.

3 Wiring Diagram Variants: AS, EX, and UK

Two wiring diagrams are included: one for AS (Australia) and EX (others), and one specifically for UK models. Page references for these are not given in the TOC, but they’re in the book. If you’re chasing a short in the boom swing circuit or the glow plug relay, having the factory wiring layout with component locators saves you from shocking yourself or frying a control box. The diagrams show the exact wire colors and connector pinouts – aftermarket reprints often blur these or use generic symbols.

Decode the Figure Application Codes

The preface explains how to interpret the country codes used in the catalog. When you see “COUNTRY UK AS EX” with a figure number, that tells you which variant applies to your machine. Example: UK gets Fig. 18, AS gets Fig. 19, EX is not applicable. This is critical if you’re ordering a part that differs by destination – like the blade assembly or the ROPS mounting brackets. Skip this page and you might order the wrong part for your machine’s serial number range.

Why You Need Genuine Yanmar Parts Data

I’ve had DIY guys tell me they can “cross-reference” part numbers from this catalog with aftermarket brands. That works sometimes, but Yanmar moved part numbers over the years. The only way to be sure is to use the factory source. The Automotive Industry Overview explains why OEM documentation eliminates guesswork – it’s the same reason I won’t let my junior techs use a Chilton for engine work. This 150-page catalog also covers the mounted engine code (3TN75L-RBVM) and model codes like 172141 and 119831A. You need those to order a short block correctly. The Automotive Industry Overview backs this up: factory data reduces miscommunication and safety risks.

Related Manuals

• YANMAR B22-P/B22 Crawler Backhoe Parts Catalog Preface
• Ammann Yanmar B12 B17 Parts Catalog
• Yanmar YB271, B27 1994 Parts Catalog – OEM Factory Specs

FAQ – Yanmar B22, B22-P, B22-C 1990 Parts Catalog

Does this catalog include repair procedures or torque specs?

No. This is a parts catalog only. It lists part numbers, specifications, wiring diagrams, and component identification. For service procedures, you need the corresponding service manual.

What years does this manual cover?

1990 publication, but it covers B22, B22-P, and B22-C models built up to that date. Machine serial numbers are referenced in the model code table.

Are wiring diagrams included for all variants?

Yes. Wiring Diagram (AS,EX) and Wiring Diagram (UK) are separate sections. They show the full harness layout with connectors and color codes for those destinations.

How do I interpret the figure application codes?

The preface explains: country abbreviations (UK, AS, EX) appear next to figure numbers. A circle under the country means that figure applies. For example, if you see “COUNTRY UK AS EX” and a circle under AS, use Fig. 19 for Australia. When no circle appears, the figure applies to all.

This catalog is not a reprint or a scan from a third-party site. It’s the original factory PDF issued by Yanmar in 1990. You get 150 pages of OEM data – specs, parts lists, diagrams – all in one searchable file. Access the Factory Manual and start ordering parts without the guesswork.