Description

Yanmar B37-P, B37-CR, B37 1990 Parts Catalog – Factory Specs for Crawler Backhoes

If you own a Yanmar B37-P, B37-CR, or B37 crawler backhoe, you already know the frustration of trying to find the right part with a third-party parts list. Numbers get transposed, buckets don’t fit, and you waste a day. This Yanmar B37-P, B37-CR, B37 1990 Parts Catalog is the factory book—169 pages of exactly what Yanmar stamped on the parts. No abbreviations, no “equivalent” nonsense. You get the part number, the figure reference, and the country-specific application table. I’ve used enough aftermarket catalogs to know that if the manual doesn’t say “Yanmar” on the cover and “Parts Catalog” in the title, you’re guessing. This one is the real deal, issued April 1990, Pub. No. 00DY00S3020.

Specifications and Part Numbers for B37-P, B37-CR, and B37

The opening pages lay out the variations between the B37-P, B37-PR, B37-C, and B37-CR models. Page 2 gives you engine specs—3TN84L-RBS, vertical 3-cylinder water-cooled diesel. Transport dimensions in millimeters: length 4830, width 1520, height varies. You get bucket capacity (0.10 m³), digging force (2350 kgf), travel speeds, ground pressure. In imperial: machine mass ranges from 3080 to 3270 kg (roughly 6790-7210 lb). If you need to order brake parts or hydraulic cylinders, the parts name index on page 3 shows you exactly where to look. Follow the Fig. numbers—each component group is referenced to a figure in the catalog. That’s how you avoid ordering the wrong boom cylinder seal.

Does This Manual Cover the Fuel Injection System?

Yes. The wiring diagram section covers the electric part (Fig. 13,14) and battery (Fig. 12). But for fuel injection, the engine parts are listed under the engine group. The manual includes the mounted engine model code for each chassis. For the B37, the model code 172148 denotes 3TN84L-RBS. You’ll find the injection pump and injectors in the engine breakdown. Check the “ELECTRIC PART” and “ENGINE” figure numbers. The parts catalog doesn’t give repair procedures—it’s a parts catalog. You get the part numbers, not the service steps. For overhaul specs, you want the service manual. This catalog gets you the right seals, gaskets, and fuel system components.

3 Systems Covered in the Wiring Diagram

The wiring diagram in this catalog isn’t a full schematic—it’s a parts locator. It covers three main systems: the electric part (Fig. 13,14) for starter, alternator, and switches; the battery and cables (Fig. 12); and the work lamp (Fig. 15). That’s enough to identify wire harness connectors and lamps. If you’re tracing a short, you’ll still need the service manual’s wiring diagram. But for ordering replacement harnesses or relays, the figure numbers point you to the exact assembly.

Use the Parts Name Index to Find Components Fast

Page 3 is the parts name index—bilingual Japanese/English. It lists every assembly group: LABEL, TOOL BOX, HEATER & DEFROSTER, STEP/INSTRUMENT PANEL/SEAT, ELECTRIC PART, BATTERY, HYD. OIL TANK, WORK LAMP, BOOM & ARM, ARM CYLINDER, BOOM CYLINDER, BUCKET, BUCKET CYLINDER, SWING CYLINDER, GREASING, BLADE, BLADE CYLINDER, CABIN, CANOPY. Each has a figure number range. This is the fastest way to navigate a 169-page book. Don’t flip randomly—use the index.

Factory Color Codes: Yanmar Saffron Yellow and More

Page 1 lists the factory paint codes. Yanmar Saffron Yellow (Munsell 1.0Y7.5/11, paint code 933110-91603), Yanmar Cream White (5.0Y9/1, 981101-09614), and Yanmar Charcoal Gray (N2, 981101-09516). Spray can codes are also given. If you’re touching up paint on your B37, these are the exact numbers. No guessing between aftermarket “close enough” shades. The manual also notes that colors are for U.K. and Australia models, but the codes are standard for most.

Why This OEM Book Beats Any Aftermarket PDF

I’ve had junkyard parts suppliers hand me photocopied catalogs with blurred numbers. This is the original scan of the factory parts catalog. The preface clearly states it covers parts for U.K. and Australia, but the part numbers are worldwide. Country-specific figures are marked with UK, AS, EX abbreviations. You see exactly which bucket or blade applies to your region. No generic “fits all” listings that leave you with the wrong part. If you want to see other Yanmar parts catalogs, check the YANMAR B37-P/PR/C/CR Specifications and Parts List and the YANMAR Parts Catalog B37-P/PR/C/CR Crawler Backhoe for similar machines. Also, the Ammann Yanmar B12 B17 Parts Catalog covers smaller models. For context on how factory documentation differs from aftermarket, see the Automotive Industry Overview and Automotive Industry Overview for standards of documentation.

Frequently Asked Questions

Can I use this catalog for a B37-CR?

Yes. The catalog covers B37-P, B37-PR, B37-C, B37-CR. Page 2 gives specific dimensions for each model.

Does it include torque specs for bolts?

No. You need the service manual for torque specs.

How are the figures organized?

Each assembly group has a figure number. The parts name index on page 3 lists figure ranges. For example, Boom Cylinder is Fig. 43-45, Bucket Cylinder Fig. 47, Swing Cylinder Fig. 48. You turn to that figure page, and it shows an exploded view with callouts referencing a parts list table below or on the facing page. The catalog uses country codes UK, AS, EX to indicate which figure applies to your machine. If the figure is common to all, no code is shown. This organization lets you pinpoint the exact part without leafing through hundreds of pages. It’s efficient once you get used to it.

Is the wiring diagram complete?

The wiring diagram section shows component locations and part numbers for the electrical parts (starter, alternator, battery, work lamp). It does not include wire gauges or connector pinouts. For troubleshooting circuits, use the service manual’s wiring diagram.

Stop ordering wrong seals and cylinders. Grab this factory parts catalog for your Yanmar B37. It’s 169 pages of part numbers that match the machine. Access the Factory Manual and get the correct numbers the first time.