Description

Komatsu PC35R-8, PC45R-8, PC30R-8, PC40R-8 2000 Workshop Manual

If you’re turning wrenches on a Komatsu PC35R-8, PC45R-8, PC30R-8, or PC40R-8, you need the factory numbers. Not a reprint that says “tighten to spec” without telling you what that spec is. I’ve seen too many guys snap bolts because they used a generic torque chart from an online forum. This Komatsu PC35R-8, PC45R-8, PC30R-8, PC40R-8 2000 Workshop Manual is the real deal – 588 pages of Komatsu’s own procedures, straight from the year 2000. That means every standard tightening torque, every hydraulic pressure test, every electrical pinout comes from the engineers who built the machine. No guesswork. No aftermarket nonsense.

That’s 588 pages. Not a reprint.

Standard Tightening Torque and Fastener Specs

Section 00 opens with the standard tightening torque table – the same table Komatsu technicians used on the assembly line. You get ft-lb numbers for every bolt size, plus notes on tightening sequences. If you’re rebuilding an engine or swapping a swing motor, you need those numbers. Page 00-10 shows the electric wire code and conversion table, so you can cross-check if your torque wrench reads Nm. Aftermarket manuals love to skip this page; this one doesn’t.

Does This Manual Cover the Engine and Hydraulics?

Yes, and it goes deep. Section 01 gives you the general assembly drawing, specifications, and weight table for the whole machine – including engine details. Section 10 covers structure and function: PTO coupling, radiator, engine control, power train, swing circle, track frame, hydraulic pump, center swivel joint, swing motor, travel motor, the 9-spool control valve, CLSS, multi-control valve, and the full electrical wiring diagram. The hydraulic circuit diagram alone is worth the price. If you need to trace a pressure loss, this is the map.

Troubleshooting: The E-Mode and H-Mode Charts

Section 20 is where you live when something breaks. It contains standard value tables for engine, chassis, and electrical parts – so you know what’s normal before you start swapping components. Then the troubleshooting section splits into E-Mode (electrical system) and H-Mode (hydraulic/mechanical). E-1 walks you through engine start failure: two sub-charts for when the starter doesn’t turn and when it turns but the engine stop solenoid is the problem. H-1 covers slow speeds or lack of power in all work equipment. Each chart lists failure modes, causes, and corrective actions. For example, H-6 addresses boom slow or lack of power – you follow the flow chart, measure pressures, and land on the fix. That’s real time saved.

3 Reasons to Choose OEM Documentation for Your Komatsu

First, the torque values are Komatsu-specific. Aftermarket manuals sometimes use generic values for Japanese bolts – wrong. Second, the disassembly and assembly procedures (Section 30) include special tool numbers and step-by-step photos. You don’t guess which way the seal faces. Third, the electrical circuit diagram is factory-original. Pin numbers, wire colors, connector locations – all match the machine on your shop floor. For a basic understanding of how a Manual Transmission works, you can read general references, but this manual gives you the exact wiring for the Komatsu’s travel boost pedal and solenoid valves. The troubleshooting chart H-13 covers excessive time lag at low idling – a common complaint that aftermarket guides ignore.

Test and Adjust Hydraulic Pressure Using Factory Specs

If you’ve ever adjusted a PC valve or measured LS differential pressure without the factory procedure, you know how easy it is to overshoot. This manual gives you the tools list (flow meters, pressure gauges) and the exact steps: release residual pressure from the hydraulic circuit, pressurize the tank, bleed air, then test. Section 20 includes testing hydraulic pressure in the work equipment, swing, and travel circuits. You also get the procedure for adjusting control levers and pedals, sprocket wear measurement, and track shoe tension. All numbers come from Komatsu, not some third-party interpretation. For a related manual covering the same models but from 2001, see the Komatsu PC35R-8 PC45R-8 2001 Service Manual. If you primarily need the PC35R-8 and PC45R-8, the Komatsu PC35R-8 PC45R-8 Shop Manual might be sufficient. And if you also work on Komatsu wheel loaders, the Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual follows the same factory format.

Does this manual cover the PC35R-8?

Yes, it covers PC30R-8, PC35R-8, PC40R-8, and PC45R-8 models.

What torque values are included?

The manual includes a standard tightening torque table in the foreword section, with specific values for bolts of different sizes and grades. Additionally, every major assembly – like the engine, swing motor, and hydraulic pump – has its own torque specs listed in the disassembly and assembly chapter. You’ll find exact ft-lb or Nm numbers for cylinder head bolts, main bearing caps, track frame bolts, and more. Aftermarket manuals often omit these or use generic values; this factory manual gives you the Komatsu-specified torque for each fastener, including the proper tightening sequence for critical joints like the cylinder head and the swing circle.

You need the numbers that came from the factory. Not a reprint, not an aftermarket copy. Access the Factory Manual and get the 588 pages of Komatsu engineering. That’s the difference between a repair that holds and one that comes back on a hook.