Description

Komatsu PC210-8, PC210LC-8, PC210NLC-8, PC230NHD-8, PC240LC-8 Workshop Manual

If you’ve ever had a Komatsu excavator throw a code on a Friday afternoon and the aftermarket manual says “torque the main pump bolts to snug,” you know the kind of frustration that costs time and money. That’s why I keep this Workshop Manual within arm’s reach. It covers the PC210-8, PC210LC-8, PC210NLC-8, PC230NHD-8, and PC240LC-8 – all serial numbers from K50001 and up. At 1062 pages, this is the factory document Komatsu techs pull up when a Valve body leak or swing motor shudder comes in. Not a reprint. Not a scan of a copy. Direct OEM content.

Specification Data: Engine, Hydraulics, and Dimensions

The first section (page 1) gives you serial number ranges and machine identification. But the real meat is in the Specification chapters – separate entries for PC210-PC230 and PC240 models. Engine displacement, pump flow rates, track tension specs. If you’re swapping a hydraulic pump or adjusting the swing brake, you need the numbers from the factory. Aftermarket manuals guess. This one gives you the exact charge pressure and relief valve settings. No guessing allowed in my bay.

Structure & Function: Hydraulic Valve Systems

Hydraulic system coverage is split into three parts. Hydraulic 1 dives into the pump, LS valve, PC valve, and LS-PC EPC valve. Hydraulic 2 covers the control valve, CLSS, pressure compensation control, and every valve function – boom regeneration, arm regeneration, merge-divider, LS bypass, drift prevention, quick return. Hydraulic 3 handles the swing motor, swivel joint, travel motor, PPC valve, and EPC valve. Each subsection explains how the Valve works and what happens when it fails. This matches the Manual Transmission approach: you need system-level understanding before touching components.

Standard Value Table: Critical Adjustments

Section 20 Standard Value Table is where you find all the tolerances, clearances, and pressures. Want to know the allowable wear on the pump piston shoe? It’s in there. Need the relief valve setting for the travel motor? Listed. I’ve seen techs strip a bolt because they used generic torque values. This manual gives you the OEM numbers – in imperial units where applicable. Use them or risk a comeback.

Testing & Adjusting: Pumps and Cylinder Cut-Out

Testing & Adjusting is split into three parts. Part 1 covers standard procedures. Part 2 includes the Special Function of Monitor – User Mode, USER code display, failure code display, and Adjustment Pump. Right there you can adjust the pump flow and set cylinder cut-out parameters. No need to call a dealer if you have the factory procedure. Part 3 likely covers additional tests. The manual walks you through each step: tools required, safety warnings, and expected results.

Troubleshooting by Failure Code: P1-P4 and E/H/S Modes

The troubleshooting section is massive. It’s organized by failure code groups: Troubleshooting by failure code P1, P2, P3, P4 – that covers codes pulled from the monitor display. Then you get three modes: E mode (electrical system), H mode (hydraulic/mechanical), and S mode (engine). Each mode has a logical diagnostic tree. I’ve used the E-mode section to trace a phantom electrical short on a PC210LC-8 – the wiring diagrams in the electric diagram section at the back showed me the exact wire colors and connector pinouts. Manual Transmission diagnostics follow similar logic: take a systematic approach, don’t shotgun replace parts.

Source Authenticity: Why OEM Matters

I’ve been burned by third-party manuals that mix up valve specifications between the PC230NHD-8 and the PC240LC-8. This document comes from the original Komatsu PDF – the same one dealer techs access. Every page matches the factory binder. The Workshop Manual is identified by part number UEN00084-01. If you’re working on a PC210NLC-8 that’s throwing code P1- something, you want the original troubleshooting chart, not a poorly translated knockoff. The table of contents alone (page 4) lists 18 distinct sections from specification through disassembly. That’s depth no aftermarket summary can match.

Related Manuals for the Same Series

If you need a lighter reference for daily checks, the Komatsu PC210-8 Series Operation & Maintenance Manual is a good companion. For a different machine family, the Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual covers wheel loaders. But for the excavator line, stick with Komatsu PC210-8 PC240-8 Series Shop Manual – this is the one that covers full rebuild specs.

FAQ

Does this manual cover the PC240NLC-8?

Yes. The manual includes PC240NLC-8 from serial number K50001 and up.

What torque values are listed for the swing motor mounting bolts?

The Standard Value Table (section 20) lists all torque specs for swing motor, travel motor, and control valve mounting. You’ll find the exact ft-lb values for each bolt size and grade. The manual also gives assembly precautions like thread locker application and tightening sequences. Page references are included in each subsection – use the index to locate the specific torque table for your model.

Can I use this for troubleshooting a PC210LC-8 that stalls under load?

Start with Troubleshooting by failure code (P1-P4). If no code appears, use H-mode (hydraulic/mechanical) to check pump pressure and LS valve function. The manual includes step-by-step test procedures with expected pressures.

Is this the same manual Komatsu dealer techs use?

Yes – it’s the official factory shop manual, part number UEN00084-01 with all revisions up to the date of printing. No condensed aftermarket version.

If you’re tearing into a Komatsu PC210-8 series excavator – whether it’s the standard PC210-8, the long-track PC210LC-8, the narrow-spec PC210NLC-8, the heavy-duty PC230NHD-8, or the larger PC240LC-8 – you need the factory book. No second-guessing oil flow rates, no guessing at valve clearance specs, no wondering if the wiring diagram is right. Access the Factory Manual now and keep it on your tablet or print it for the workbench. Your machine will thank you.