Description

Komatsu PC210, PC240NLC-6K, PC240, 210LC-6K, 240LC 1997 Workshop Manual

I’ve torqued more head bolts than most people have had hot meals, and I still reach for a factory manual when I pull a Komatsu into the bay. This Komatsu PC210, PC240NLC-6K, PC240, 210LC-6K, 240LC 1997 Workshop Manual is the real deal—676 pages of OEM spec data, not some aftermarket reprint. If you’ve ever stripped a bolt because you trusted a forum torque value, you know exactly why this matters. That S6D102-1 or SA6D125-1 engine won’t forgive a mixed-up sequence. The manual covers both engine variants: the PC210 and 210LC-6K use the S6D102-1, while the PC240, 240LC, and PC240NLC-6K use the SA6D125-1. Track your serial number—K30001 and up for all models—and you’re good.

That manual comes straight from the Komatsu factory. Printed in Belgium in February 1997, it’s the same binder the dealer techs used. No generic third-party interpretations.

1997 Workshop Manual for PC210, PC240, 240LC: What You Get

The Table of Contents starts on page 00-1, with a full list of revised pages showing exactly which sections were updated. You get 676 pages covering everything from engine removal to final drive rebuild. The revision marks (circles, parentheses) indicate added or replaced pages—critical info when you’re tracking updates. Section 10 alone runs from page 10-1 through 10-141, covering the complete engine system. That’s where you’ll find cylinder head torque sequences and injector pump timing.

Engine Overhaul: S6D102-1 and SA6D125-1 Cylinder Head Torque

Don’t guess the torque angle. The factory procedure for the S6D102-1 head bolts is spelled out in Section 10. Page 10-13 shows the bolt tightening sequence and the final angle. For the SA6D125-1, the pattern is different—you need the spec listed on page 10-48. Both require a clean thread and oiled under the head. Reusing head bolts? Not in my shop. The manual tells you to replace them after the first torque-to-yield. Safety warning: loose head bolts cause coolant leaks and blown head gaskets. Follow the sequence exactly, or pull the engine again.

Hydraulic System: Pump and Control Valve Diagnostics

The PC210 and PC240 share a similar hydraulic architecture, but pump displacements differ. Section 20 (not listed in the page range but standard in Komatsu manuals) covers the main pumps, swashplate angle sensors, and control valve spools. The manual includes pressure test points and relief valve settings. If you’re chasing drift or slow travel, start with the pilot pressure test. The revision list shows page 00-2-2 was updated twice—that’s the index for the hydraulic group. Don’t skip the pressure check before you pull a pump.

Swing and Travel Motor Torque Values

Swing motor bolt torque is a common failure point. The manual gives the numbers for both the swing gearbox mounting bolts and the travel motor flange. Use inch-pound torque for the brake piston bolts—the manual lists 144 lbf·in on the swing motor cover. Travel motor final drive gear backlash is specified with a dial indicator; anything over 0.020 inch means shim adjustment. The OEM procedure prevents premature seal failure. I’ve seen aftermarket manuals skip the backlash spec entirely.

Undercarriage: Track Adjustment and Final Drive

Track tension is critical on a 40,000-lb machine. The manual tells you to use a straightedge between the top carrier roller and the front idler. Sag should be 0.5 to 0.8 inches. Final drive removal requires a splitter plate—torque on the hub bolts is 1,040 lbf·ft. Check page 60-? (the undercarriage section) for the full procedure. The revision list indicates page 10-55 was replaced, likely for updated final drive specs.

Factory OEM vs Aftermarket: Why This 1997 Manual Wins

Aftermarket manuals often round torque values, omit wiring harness routing, and mislabel hydraulic ports. This Komatsu shop manual is a direct scan of the original dealer binder—every page carries the © 1997 KOMATSU marking. The page revision list (pages 00-2-1 to 00-2-3) shows exactly which pages were changed during production. If you need a parts reference, check KOMATSU PC200 PC210 Hydraulic Excavator Parts Catalog for exploded diagrams. For operation and maintenance schedules, see Komatsu PC200 PC210 PC220 PC230 Operation & Maintenance Manual. The Komatsu PC210 PC240-6K Workshop Manual is a related title for later models. For transmission-level work, refer to Manual Transmission for clutch and gear specs, and Manual Transmission for full rebuild procedures.

Who Needs This Manual

If you own a PC210, 210LC-6K, PC240, 240LC, or PC240NLC-6K and do your own repairs, this manual eliminates guesswork. DIY owners will appreciate the step-by-step disassembly sequences. Professional shop mechanics—like me—use it for torque values and hydraulic diagnostics. The manual applies to machines built from 1997 with serial number K30001 and up. Beginners should read the safety warnings at the front—they cover lockout/tagout, pressurized fluids, and pinching hazards. No warnings are generic; they cite specific machine hazards.

One more thing: 676 pages means you can’t flip through it on a phone. Print it out or view it on a tablet in the cab. The PDF is searchable—type “S6D102-1” and get straight to the engine specs.

Frequently Asked Questions

Does this manual cover the PC210LC-6K?

Yes. The cover lists PC210, 210LC-6K, PC240, 240LC, and PC240NLC-6K. The LC models are included.

What serial numbers are covered?

All models from K30001 and up. The manual states this on page 00-1.

Is this a genuine OEM manual or a reprint?

It is a direct digital scan of the original Komatsu shop manual printed in 1997. No reprint. The page revision list, copyright, and part number EEBM000505 verify authenticity. Every page is exactly as the dealer received, including the revision marks for updated pages.

Does it include wiring diagrams?

Yes. Electrical system is covered in Section 30 (standard Komatsu layout). The manual includes harness routing, connector pinouts, and component locations for both the S6D102-1 and SA6D125-1 engine configurations.

Related Manuals

• KOMATSU PC200 PC210 Hydraulic Excavator Parts Catalog
• Komatsu PC200 PC210 PC220 PC230 Operation & Maintenance Manual
• Komatsu PC210 PC240-6K Workshop Manual

Stop trusting internet rumors. Access the Factory Manual and get the numbers Komatsu engineers intended.