Description

Komatsu WA470-5 Parts Catalog – 750 Pages OEM Factory Parts

You know the drill. You pull a Komatsu WA470-5 into the bay, split a hydraulic line, and need a replacement O-ring by lunch. You flip through some aftermarket parts PDF that’s been photocopied three generations, and the part number doesn’t match the casting. That’s a wasted hour and a pissed-off shop foreman.

Komatsu WA470-5 Parts Catalog is the real deal. 750 pages of factory-sourced exploded diagrams, figure numbers, and OEM part numbers for every system on this loader. Not a service manual – this is the parts catalog that dealers use to pull inventory. If you want the right seal, the right gasket, the right bearing the first time, this is what you put on the bench.

01 Engine, Engine Mounting – Full Parts Breakdown

Section 01 covers the engine and mounting hardware. Every bolt, bracket, and isolation mount is listed with a figure number and serial number range. You don’t guess which rear engine mount fits a late-production WA470-5 – you read the figure description and match it to your machine. For background on the internal combustion engine itself, see Internal Combustion Engine.

Cooling System: What Factory Parts Are Covered?

Section 02 – cooling system. Radiator, fan shroud, water pump, thermostat housing – all laid out with individual part numbers. No generic “fits Komatsu” garbage. This is the OEM breakdown. If you need the correct fan belt tensioner pulley, it’s right there with the figure and page reference. The cooling system on these loaders works hard in Texas heat; a wrong part means an overheated job and a comeback.

4 Drivetrain Sections: Transmission, Axles, Brakes

Sections 04 (Transmission, Universal Joint), 05 (Rear Axle), 08 (Front Axle), and 09 (Brake System) give you the complete drivetrain parts catalog. The transmission section includes clutch packs, planetary gears, and the torque converter. The brake section lists calipers, discs, and lines. Every O-ring, seal, and shim has a factory part number. If you’re rebuilding a differential, you need these pages.

Brake System: Factory Part Numbers for Full Overhaul

Section 09 – brake system. Master cylinder, wheel cylinders, brake valves, and all lines. The WA470-5 uses a wet disc brake design – you need exact seal kits and plates. Aftermarket catalogs often combine models. This manual separates by serial number and figure. Page numbers are referenced to each figure, so you can flip straight to the exploded view.

Stick with OEM Documentation – No Aftermarket Shortcuts

I’ve seen techs order from generic parts catalogs and end up with a hydraulic pump that doesn’t bolt up. Then they blame the machine. The Komatsu Parts Catalog is the only source that matches letter-for-letter with the parts you pull from the warehouse. Aftermarket PDFs often re-index figures and lose critical revision notes. This is a direct scan of the factory document – no reprints, no edited diagrams. For a broader perspective on why OE documentation matters in the automotive industry, read Automotive Industry Overview.

Related manuals you might need on the shelf:

• Komatsu WA470-5 WA480-5 Workshop Manual – if you need torque specs and service procedures alongside the parts catalog.
• FAI 67-80DT Hydraulic Steering Piston Parts List – for steering cylinder rebuilds on similar loaders.
• Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM – for the smaller Komatsu wheel loader family.

Frequently Asked Questions

Does this catalog include torque specifications or repair procedures?

No. This is a parts catalog, not a service manual. It lists OEM part numbers, exploded diagrams, and figure references. For torque values and repair steps, pair it with the workshop manual.

How do I find the correct part if my machine’s serial number falls between two ranges shown in the catalog?

Each figure in the catalog (e.g., Figure 01-01 for engine mounting) lists a specific serial number range. If your WA470-5 serial falls between two listed ranges, you need to check the figure’s “SERIAL NO.” column – sometimes a production change splits the page. If yours isn’t covered by any figure, contact the dealer with the chassis number. The catalog is organized by the original factory revision, so later machines may require a supplement not included in this 750-page base document. Always cross-reference the figure description line (e.g., “ENGINE MOUNTING (S/N 10001-20000)”). If your serial is 20150, that figure won’t fit – you need the next figure range. Many techs get burned by assuming one size fits all. The 750 pages are detailed for a reason: use the serial number filters.

This is the parts catalog that belongs in every shop that touches a Komatsu WA470-5. Flip to the section you need, find the figure, order the exact part. No wasted trips to the dealer. Access the Factory Manual and get back to turning wrenches.