Description

Komatsu WA65-6, WA70-6, WA80-6, WA90-6, WA100M-6 2010 Workshop Manual

If you’ve ever cracked open a third-party manual for a Komatsu wheel loader and found the torque specs were off by 15 ft-lbs, you know the kind of waste that causes. Time. Parts. Sometimes a warranty claim. Aftermarket documentation gets the general shape right, but the numbers? They fudge them. That’s why you want the real thing: the Komatsu WA65-6, WA70-6, WA80-6, WA90-6, WA100M-6 2010 Workshop Manual – 426 pages of factory-verified data, not a reprint of a reprint.

Flip to page 1 and you’ll see the engine lineup: WA65-6 and WA70-6 use the 4D95LWE-5, WA80-6 uses the S4D95LWE-5, WA90-6 and WA100M-6 use the SAA4D95LE-5. That matters when you’re ordering pistons or checking valve clearances. The manual doesn’t assume – it tells you exactly which engine goes where.

Original OEM print – no generic aftermarket.

426 Pages of Factory-Stamped Procedures

This is not a condensed guide. The manual covers Safety, General specs, Structure and Function, and Testing/Adjusting. Each model has its own specification tables, weight tables, and lubricant charts. Page 3 shows the full table of contents – Safety notice, tipping procedures, hoisting instructions, torque lists. The torque list alone is worth the access. Aftermarket manuals often misprint those numbers – a 5 ft-lb error on a wheel loader hub nut can cost you a bearing.

Komatsu WA65-6 to WA100M-6 2010 Workshop Manual: Structure and Function Breakdown

The HST pump and motor sections vary by model speed. WA65-6 and WA70-6 use a 20 km/h system. WA80-6 has both 20 and 30 km/h. WA90-6 and WA100M-6 also have 20 and 30 km/h. The manual details the regulating valve (DA valve), charge pump pressure relief valves, control cylinder, and the 4/3 way valve with direction control solenoids. If you need to adjust the HST pump, the hydraulic diagrams for A6VM80 and A6VM107(160) motors are in here. Don’t guess the clearances.

Torque List and Lubricant Specs – The Difference Between a Leak and a Seal

The General section includes a dedicated torque list for screws and nuts. That table is your insurance policy. The lubricant section covers oil, fuel, coolant, grease, and biodegradable hydraulic oils. Each model variant gets its own lubrication table – WA65-6/WA70-6, WA80-6, WA90-6, WA100M-6 are listed separately. Using the wrong viscosity in a San Antonio summer? The manual has the ambient temperature range.

Who This Manual Serves – and Who It Filters Out

This manual is for anyone who puts hands on these loaders – whether you’re a home garage guy who bought a used WA70-6 at auction, or you operate a fleet of WA100M-6 machines. It assumes you have basic mechanical knowledge and the right tools. It does not assume you know the factory sequence for tearing down a front axle with outer disc brakes. The sections on front and rear axle mounting, limited slip differentials, and locking differentials give you the exact disassembly and assembly procedure. Beginners should read the Safety section first – it covers cab tipping, hoisting with wire ropes, and hydraulic system precautions. Do not skip that. The manual also covers the transfer box TB172, the service brake circuits for each model variant, and the steering system including the priority valve and orbit-roll-valve. If you’re rebuilding the HST motor with DA control, the hydraulic diagram for A6VM107(160)DA2 is in the manual. The point is, this manual has the specific procedures, not generic instructions.

OEM vs Aftermarket: Why This Is the Only Copy You Should Trust

Aftermarket manuals are often scanned, OCR’d badly, or translated from a translation. This is a direct copy of the Komatsu factory shop manual. Published in 2010, printed in Europe, with the original file name KOMATSU_WA65-6-WA70-6-WA80-6-WA90-6-WA100M-6_2010_Workshop_Manual_en-35328005523.pdf. The serial number ranges are printed on page 1. That’s the level of traceability you get. For reference on Manual Transmission fundamentals, check external resources – but for these loaders, this is the document.

FAQs: Getting the Straight Answers

Does this manual include wiring diagrams?

No. This is a workshop manual covering mechanical and hydraulic systems, not electrical troubleshooting.

Will this manual tell me how to rebuild the HST pump?

Yes. The Structure and Function section includes the variable displacement pump (HST pump) with the regulating valve (DA valve), charge pump pressure relief valves, control cylinder, and the 4/3 way valve with direction control solenoids. It provides the hydraulic diagrams for A6VM80 and A6VM107(160) motors. The Foreword outlines the disassembly and assembly methodology used across all components. You get the factory procedure with the correct torque values and adjustment specs. It is not a simplified guide – it is the real procedure.

What years does this manual cover?

This is the 2010 edition. It covers WA65-6 serial number H60051 and up, WA70-6 H60051 and up, WA80-6 H60051 and up, WA90-6 H00051 and up, WA100M-6 H60051 and up.

Is this manual in English?

Yes. The OCR excerpt confirms it is printed in English, with European publication notes.

If you’re working on a Komatsu wheel loader from the 6 series, you need the factory numbers. Aftermarket copies waste your bench time. Manual Transmission knowledge might help elsewhere, but for these loaders, stick to the original. Related manuals: Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual, Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual, and Komatsu PW95R-2 Workshop Manual – 520 Pages of Factory Specs. Access the Factory Manual and get the correct torque values in your hands.