Description

Komatsu WA600-3, WA600-3D 2007 Workshop Manual

If you’re wrenching on a WA600-3 loader and you don’t have the factory specs, you’re gambling with a $200K machine. I’ve seen guys guess on transmission pressures and end up with a valve body that needs replacing – that’s a week of downtime and a parts bill that hurts. This Komatsu WA600-3, WA600-3D 2007 Workshop Manual is the same binder that sits on the dealer tech’s bench. 1197 pages, direct from Komatsu, printed in 2007. No aftermarket shortcuts, no scanned copies that lose the fine print on hydraulic diagrams.

Let me walk you through what’s inside. The manual splits into seven major sections: GENERAL, STRUCTURE AND FUNCTION, TESTING AND ADJUSTING, DISASSEMBLY AND ASSEMBLY, MAINTENANCE STANDARD, and OTHERS. That TESTING AND ADJUSTING section alone is worth the price of the manual – it’s got standard value tables for engine, chassis, and electrical parts, plus step-by-step procedures for measuring everything from engine oil pressure to brake disc wear.

Komatsu WA600-3, WA600-3D 2007 Workshop Manual: What You Get

This covers both the WA600-3 and its TBG-spec variant (WA600-3D), serial numbers 50001 and up. The engine is the SA6D170E-2 or SAA6D170E-3 – you’ll need the separate 6D170 engine manual for full rebuild work, but this manual gives you all the loader-specific adjustments: torque converter regulator valve (serial 52001 and up), transmission control valve, brake valve, steering unit, and the full electric circuit diagram. Need the charge pressure? The standard value table in section 20 lists every pressure spec you’ll require.

Transmission and Torque Converter Piping

Section 10 dives deep into the power train. There’s a dedicated subsection on Torque Converter and Transmission Piping, plus hydraulic circuit diagrams for the power train. If you’ve ever had to flush a transmission after a failure, the manual includes a procedure for flushing the torque converter and transmission hydraulic circuit – it’s on page 20-something in the testing section. That kind of detail keeps you from contaminating a new transmission with debris from the old lines. Also covered: torque converter oil cooler, oil filter, transfer, drive shaft, and the limited slip differential (optional).

Does This Manual Cover the Engine?

Partially. The manual includes engine-related testing and adjusting procedures: measuring compression pressure, blow-by pressure, oil pressure, adjusting valve clearance, and fuel injection timing (for serial 50001-52000). But for engine internals like piston rings, bearings, or head gasket torque, you need the separate 6D170-2 or 6D170-3 Series Engine Shop Manual. That’s a common point of confusion – this loader manual is about the machine, not the engine block itself. However, it does cover the Auto Priming System (APS) for serial 50001-52000 and the pre-heating circuit for 52001 and up.

7 Major Sections for Complete Overhaul

The manual is organized into seven main sections: 01 GENERAL (specs, weight table, lubricant list), 10 STRUCTURE AND FUNCTION (all systems broken down), 20 TESTING AND ADJUSTING (the meat of diagnostics), 30 DISASSEMBLY AND ASSEMBLY, 40 MAINTENANCE STANDARD, and 90 OTHERS. Each section has its own page numbering – so when the manual says “see page 10-1” you’re looking at the start of the structure and function section. That sectional numbering system is standard OEM format; it makes navigating the 1197 pages straightforward once you get used to it.

Get the Right Torque Data from the Source

Aftermarket manuals often list generic torque values that don’t account for the different bolt grades or thread compounds Komatsu specifies. This factory manual gives you the exact torque for every fastener – from axle mount bolts to the torque converter regulator valve. For example, the table of tools for testing and adjusting lists the exact pressure gauges and adapters you need. Don’t guess; use the OEM values. It’s the difference between a leak-free job and a comeback.

Testing and Adjusting: Factory Procedure

Section 20 is where you’ll live when diagnosing problems. It covers measuring engine speed, exhaust gas color, blow-by pressure, and adjusting injector lift (serial 52001 and up). For the transmission, there’s a full procedure for testing and adjusting torque converter and transmission oil pressure, plus a procedure for moving the machine when the transmission valve fails. The brake section includes measuring brake disc wear and accumulator charge cut-in/cut-out pressure. Every procedure includes the required tool list – no guessing which gauge fits.

This manual also covers the E.C.S.S. (Electronically Controlled Suspension System), electric parking brake control, and the kick-down/hold switch circuits. The electric transmission control section is detailed, with wiring diagrams for the full machine monitor system. If you’re working on a machine with joystick and automatic shift control, there’s a dedicated subsection for that.

For the hydraulics, you get the work equipment hydraulic circuit diagram, PPC valve, cut-off valve, main control valve, and the auto grease system. The auto grease system section alone saves you from chasing down a dozen zirks that are buried under hours of dirt. Komatsu even includes the lubrication points for work equipment linkage.

Now, about source authenticity. This is a genuine Komatsu factory publication – not a third-party reprint, not a scanned PDF with watermarks. The OCR excerpt shows the official SEBM013217 number and the “All Rights Reserved” statement. Every page is revision-marked, so you know you’re getting the latest corrections. Third-party manuals often miss those revision marks, which can lead you to use outdated torque specs. Stick with the factory source.

If you’ve ever compared a Manual Transmission rebuild from an aftermarket guide to the factory procedure, you know the difference. The OEM manual gives you the clearances, the specialized tool numbers, and the sequence. This Komatsu manual is exactly that for the entire loader.

Frequently Asked Questions

Is this manual for the WA600-3D TBG spec?

Yes, it covers both WA600-3 and WA600-3D (TBG spec) from serial 50001 up.

Does it include electrical diagrams?

Yes – section 10 has a full electric circuit diagram, machine monitor system, and all the electronic control circuits (transmission, parking brake, E.C.S.S.).

What about torque specs for the transmission?

The manual includes standard value tables for chassis and engine. Specific torque values for the torque converter, transmission control valve, and all fastener groups are listed in the structure and function section and the maintenance standard section.

Can I use this for the SAA6D170E-3 engine?

The manual references the engine but for detailed engine work, you’ll need the separate 6D170-2 or 6D170-3 Series Engine Shop Manual. However, this manual covers testing and adjusting procedures that involve the engine, like measuring compression pressure and blow-by pressure, and adjusting valve clearance. It also includes injector lift adjustment for serial numbers 52001 and up. So for overall loader maintenance, yes, but for full engine rebuild, get the engine-specific manual. That’s a common trap – don’t expect piston ring gaps in a loader manual. This is the right document for the machine, not the power plant alone.

Related manuals you might need:

• Komatsu WA600-3 Shop Manual
• Komatsu WA600-3 WA600-3D 2007 Workshop Manual – 1197 Pages
• Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual

If you’re serious about keeping that loader running without guesswork, access the factory manual from AutoRepairManuals. The 1197 pages will pay for themselves the first time you avoid a misdiagnosed Manual Transmission problem.