Description

Yanmar B08-3 2004 Parts Catalog

You’ve got a Yanmar B08-3 2004 Parts Catalog in your hands because ordering the wrong part wastes time and money. I’ve seen guys guess on a fuel injection pump seal and then watch a $2,000 machine sit for a week. This 135-page factory document is what the Yanmar dealer uses. It covers the B08-3 crawler backhoe for US and Australian markets, including models built from 2001 onward. The wiring diagram section alone is worth the access if you’re chasing electrical gremlins.

How to Read This Parts Catalog: The First Thing You Do

Page 2 of this catalog shows you exactly how the part numbers and illustrations are organized. You’ll see a column for Ref. No., Level, Part Number, Description, Quantity, and a column for model variants (A through F). The Level column tells you if a part is an assembly (Level 1) or a sub-component (Level 2). If you skip reading this page, you’ll order an assembly when you only needed a washer. I’ve done it. Don’t do it.

Picturesque Index: Using the Visual Parts Breakdowns

The catalog includes seven sections of “Picturesque Index” – these are the exploded-view diagrams. Each index covers a different system: undercarriage, hydraulics, engine, etc. You find the part visually, then cross-reference the Ref. No. to the parts list. No guesswork. Turn to the index that matches your machine’s area, find the part, and note the number. This is how you avoid buying a third-party knockoff that breaks in 50 hours.

Wiring Diagram – Where the Electrical System Lives

A dedicated Wiring Diagram section is included. If your B08-3 won’t start or the dash lights are acting up, go straight here. The diagram shows wire colors, connector locations, and ground points. It’s OEM wiring, not aftermarket interpretation. Use it with a multimeter and you’ll find the short circuit in half the time.

Model Identification: B08-3 US vs AS Specs

Page 1 lists the model breakdown. The B08-3 (US) starts at serial 00501 built from 2001/2, while the B08-3 (AS) has a different serial range. The engine is a 2TNE68-EBVA with serial 20007 onward. If you order parts without checking your serial number, you risk getting the wrong injection pump or cylinder head. Write down your machine’s M/# before you open this catalog.

Why OEM Parts Matter for Your Yanmar B08-3

This catalog lists only Yanmar Genuine Parts. The preface warns against using market-available simple parts because they cause early breakage. I’ve seen aftermarket bushings wear out in 200 hours on a B08-3 undercarriage. The factory supercedes parts with no prior notice, and this 2004 edition includes the revisions up to June 2004. You need the latest revision number stamped on the cover to ensure you’re ordering current stock.

Use the Level Column to Find Sub-Assemblies

When you look at a parts list, notice the Level column – it’s the key to ordering the right sub-assembly. Level 1 is the parent assembly (e.g., fuel injection pump). Level 2 parts are children inside that assembly (e.g., camshaft, retainer, screws). Some Level 2 parts have an interchange symbol (N or K) meaning the illustration may be omitted after a change. Always check the Ref. No. sequence; if you see a hyphenated number like 1-1, that’s a design revision. Page 2 explains the interchange symbols in detail. Pay attention.

Frequently Asked Questions

Does this catalog include repair procedures or torque specs?

No. This is a parts catalog only. It lists part numbers and exploded views, not service procedures. You need the separate Yanmar service manual for torque values and step-by-step repairs.

How do I use the Ref. No. and Level columns correctly?

The Ref. No. on the illustration may not match the list number exactly, especially after part revisions (e.g., 1 becomes 1-1). The Level column (1 or 2) defines parent-child relationships. Level 1 is the main assembly. Level 2 parts are included inside Level 1. Always trace the part number from the illustration, then verify the quantity column against your machine’s spec (A, B, C, etc.). If your machine is a US model with canopy spec (P), check the appropriate column. The “Remarks” section below each list often includes crucial notes like “BOOST COMPENSATOR TYPE” or optional part ranges. Ignoring those notes will get you a part that doesn’t fit.

Related Manuals

• Yanmar B08-3 2004 Parts Catalog
• Yanmar B08-3, B12 2006 Parts Catalog – OEM Consumables
• Ammann Yanmar B12 B17 Parts Catalog

For background on why OEM documentation is critical in the Automotive Industry Overview, consider how machine downtime impacts any job site. The same principle applies to construction equipment: a wrong part costs more than the manual. If you’re new to using parts catalogs, the Automotive Industry Overview provides context on standardized part numbering systems. Now stop futzing around with aftermarket lists. Access the Factory Manual and start ordering the right parts today.