Description

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

Look, I’ve seen too many guys ruin a good transmission because they used a generic aftermarket manual and guessed the torque on the converter bolts. That mistake costs you a rebuild. That’s why you need the OEM Komatsu WA600-3, WA600-3D 2007 Workshop Manual. It’s 1197 pages of factory data – no abridged garbage, no reprints. I’m Mike Callahan, 28-year ASE Master Tech, and I won’t touch a loader without the real specs.

Torque Converter and Transmission Piping: What the Manual Covers

Section 10 of this manual dives into the power train system. It includes the torque converter, transmission control valve, and torque converter regulator valve (for serial 52001 and up). On page 10-24 you’ll find the exact pressure settings and torque values for the regulator valve. I’ve used those numbers to stop leaks that aftermarket diagrams cause. The hydraulic circuit diagrams are clear – they show you the flow path from the torque converter through the transmission piping. If you need to replace a seal or a bearing, the manual gives you the disassembly sequence. Don’t guess the stack height.

Testing and Adjusting Torque Converter Oil Pressure

Chapter 20 is where the real work gets done. It lists standard value tables for the engine, chassis, and electrical parts before you even touch a wrench. For example, the torque converter oil pressure test procedure tells you exactly which ports to tap and what gauge range to use. The manual specifies the tool list – you need a 0-600 psi gauge and a tachometer. I’ve seen guys skip the warm-up step and get false readings. The manual says: run the engine at low idle for five minutes first. Follow that. The acceptable pressure range is printed right there in the standard value table (Page 20-1).

Does This Manual Cover the SA6D170E-2 Engine?

Yes, but it references the separate 6D170-2 or 6D170-3 Series Engine Shop Manual for full engine internals. What this workshop manual does cover: all the engine-mounted systems such as the auto priming system (APS) for serial 50001-52000, the pre-heating circuit for serial 52001 and up, and the fuel injection timing adjustment. It includes testing of compression pressure, blow-by pressure, and oil pressure. The valve clearance adjustment procedure is in Chapter 20 with the exact feeler gauge sizes. If you need to replace a fan belt, the auto-tensioner adjustment is documented with belt deflection specs in inches.

Standard Value Tables for Engine, Chassis, and Electrical

These tables are what separate OEM from aftermarket. Chapter 20 opens with three tables: Standard Value Table for Engine, for Chassis, and for Electrical Parts. They list oil pressures, fuel pressures, and electrical resistances with the acceptable tolerance. For the transmission, you get the charge pressure and clutch pressure specs. The chassis table includes the steering stop valve test pressures and brake accumulator cut-in/cut-out values. I keep a printout of these tables taped to my toolbox – they save me from digging through pages when I’m under the machine. The manual gives you the OEM limits, not a range you have to guess from.

Get the Right Torque Values from Chapter 20

Every bolt that matters – transmission housing, brake caliper mounting, torque converter – has a torque spec listed in the testing and adjusting procedures. For example, the transmission oil pump mounting bolts are torqued to a specific ft-lb value stated on page 20-1 of the standard table. The manual also tells you the tightening sequence for the transfer case bolts. I’ve seen aftermarket manuals skip the sequence entirely, then wonder why the case leaks. This manual doesn’t. It also covers the brake disc wear measurement and the parking brake solenoid valve adjustment. If you’re replacing a brake valve, the charge valve test procedure tells you the correct cut-in pressure.

7 Systems Detailed in the Structure and Function Section

Chapter 10 breaks down the machine into major systems: power train, steering, brake, hydraulic, work equipment, cab/ROPS, and electrical. Each system includes a function description, hydraulic circuit diagrams, and component cross-sections. The electric circuit diagram for the machine monitor system shows the pinouts for the main monitor and maintenance monitor. The E.C.S.S. (electronically controlled suspension) is covered with the wiring schematic and solenoid test points. If you have a joystick and automatic shift control machine, there’s a dedicated subsection. The bucket positioner and boom kick-out proximity switch operation is explained with the actual switch actuation pilot lamp test. This level of detail is why I won’t use anything but OEM for loaders this size.

FAQ

What serial numbers does this manual cover?

Serial numbers 50001 and up for both WA600-3 and WA600-3D.

Are torque specifications for the transmission included?

Yes, the Testing and Adjusting section (Chapter 20) includes specific torque values for transmission components such as the torque converter and transmission piping. On page 10-24 you’ll find the regulator valve specs for serial 52001 and up. The manual lists both the tightening torque and the oil pressure test ranges.

Does this manual include procedures for the auto grease system?

Yes, the Structure and Function section (Chapter 10) covers the auto grease system in detail, including the lubrication of work equipment, the linkages, and the bucket positioner. The manual provides step-by-step disassembly and assembly instructions in Chapter 30, with maintenance standards in Chapter 40. For example, the lubrication intervals and grease types are specified in the list of lubricants and coolant in Chapter 01. If you have the serial number, you can find exact component breakdowns for the auto grease system starting on page 10-85-1, which includes the grease pump and control valve assembly.

Can I use this manual for troubleshooting the E.C.S.S.?

Yes, the E.C.S.S. (Electronically Controlled Suspension System) is documented in Chapter 10 under ‘STRUCTURE AND FUNCTION’. The manual includes electric circuit diagrams and testing procedures in Chapter 20.

Related Manuals

• Komatsu WA600-3 Shop Manual
• Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual
• Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual

Skip the guesswork. If you want to understand the basics of a Manual Transmission, that’s fine – but for the actual repair, you need factory data. The Automotive Industry Overview won’t help you when the loader won’t move. Access the Factory Manual and get the real specs. You’ll have the torque values, test procedures, and wiring diagrams that match the machine on your shop floor.