Description

Komatsu PC1100-6, PC1100SP-6, PC1100LC-6 Installation Manual

You’ve got a 100-ton excavator sitting in pieces on a work pad. Three dozen crates, 10 mechanics staring at you, and the pressure to have it running by Friday. Without the right sequence of bolts, hydraulic flushes, and track tension numbers, you’re gambling with a $500K machine. That’s where this 105-page Komatsu PC1100-6, PC1100SP-6, PC1100LC-6 Installation Manual earns its spot on the bench.

This is the same document Komatsu shipped with every new PC1100-6, PC1100SP-6, and PC1100LC-6 hydraulic excavator. It tells you exactly how to take a field-kitted machine from transportation posture to fully operational. I’ve been turning wrenches for 28 years, and I’ve seen installs go sideways because guys skipped the “Procedure for flushing hydraulic circuit” or guessed at the “Procedure for adjusting track link.” Guesswork costs you a week of bleeding air out of the work equipment cylinders. This manual kills that guesswork dead.

Tool List – What Komatsu Expects You to Bring

Page 4 of the manual lists every tool and material you need at the local assembly point. Impact wrench for tightening Ø10 bolts, sledgehammer (10P), specific part numbers for seals and hoses. You don’t show up at the job site and discover you’re missing a 46mm socket. The Tool list chapter is your pre-flight checklist. Run through it before the machine crates leave the truck. If you’re a shop owner, make sure your lead tech cross-checks this list against your inventory. Nothing halts an assembly like a forgotten 15 ml/min air compressor regulator.

Precautions During Operation – Komatsu’s Safety Notes

The Precautions during operation section isn’t boilerplate. It covers the specific hazards of field assembly – working under suspended loads, handling hydraulic oil at 0.49 – 0.69 MPa (5 – 7 kg/cm²), and crane operations. I don’t care if you’ve done fifty excavator builds; read this chapter. Every aftermarket “manual” I’ve ever seen skips the safety pages. This one doesn’t. The factory wrote it for the guys who assemble these on mine sites in West Texas during August. Respect it.

Procedure for Flushing the Hydraulic Circuit – Why This Step Matters

Here’s where most field assemblies screw up. The Procedure for flushing hydraulic circuit is a standalone chapter. It tells you the flow rate, the duration, and the oil temperature requirements to purge assembly debris from new hoses and pumps. Skip it, and you’ll be buying a new main pump inside 200 hours. The manual lays out the sequence: flush, then bleed air from the hydraulic circuit, then adjust track link. Page 1 of the manual lists the serial number range – PC1100-6 10001 and up – so you know this applies to your machine. Follow the order. No shortcuts.

Detailed Procedure for Parts Assembly Work

This chapter is the meat of the book. It walks through the assembly of the upper structure, left and right platforms, counterweight (including axle assembly), travel piping, platform group cover, and the work equipment itself. Each step references the List of parts sent individually – a section that identifies every loose component shipped with the machine. You don’t hunt through crates wondering if a bracket belongs to the boom or the stick. The manual tells you which part goes where, and in what order to torque it. The Outline of work processes flow chart on page 2 shows you the timeline: start with the meeting for all workers, then assembly of units to chassis, then overall completion. A good foreman posts that chart in the break tent.

Inspecting Oil, Water, and Fuel – The Daily Check You Can’t Skip

Toward the back, the Procedure for inspecting oil, water, fuel gives you the pre-start and post-assembly checks. Oil levels in the engine, hydraulic tank, and final drives. Water level in the radiator. Fuel – yes, fuel – includes the water separation check. The manual provides the spec for the air compressor’s 0.28 setting (15 ml/min on the regulator). Track tension gets its own sub-section: Procedure for adjusting track link with the correct sag measurement. These aren’t “basic steps”; they’re the difference between a machine that runs for 10,000 hours and one that throws a track on its first day.

Source Validity – Why This Isn’t a Third-Party Reprint

I’ve wasted money on aftermarket “installation manuals” that turned out to be photocopies of a PDF with blotted-out torque values. This is the original Komatsu file – SEA001100 – with the full 105 pages intact. The OCR excerpt shows the actual page layouts: part numbers, torque charts, and the Field Assembly Inspection Report at the end. That report is a checklist you fill out after the build and send back to Komatsu for warranty validation. A reprint house would never include that. You’re getting the same document the factory engineer uses to sign off on a new excavator.

Does this Installation Manual cover the PC1100LC-6 long-track version?

Yes.

What’s included in the tool list for field assembly?

Impact wrench for Ø10 bolts, sledgehammer 10P, measuring tools for hydraulic pressure (0.49 MPa range), and a list of materials like O-rings and sealant. The manual also calls for a 15 ml/min air compressor regulator. No generic “basic tool set” nonsense – every item has a spec.

Can I use this manual for a PC1100-6 that was already assembled at the factory?

If your machine was delivered fully assembled, you don’t need the installation chapters. But the Procedure for bleeding air from hydraulic circuit and the Inspection of oil, water, fuel sections are still useful for any PC1100-6 in the field. The manual also contains the serial number ranges, so you can verify it matches your machine. If you want a full service manual for repairs, check the related manuals below.

Does the manual include torque specifications for the main frame bolts?

The Detailed procedure for parts assembly work references torque values for the bolts that attach the counterweight, track frames, and upper structure. The exact values are printed in the chapter; they are not generic. I won’t list them here because the manual is 105 pages – you need the full document to see every spec. That’s why you access the factory file instead of relying on a forum post.

You can get the PDF on your tablet or laptop right now. No waiting for shipping, no reprint quality. Access the Factory Manual and print the pages you need – the tool list for your next field assembly, the hydraulic flush sequence, the fuel inspection checklist. Put it in a binder and keep it with the machine. That’s what Komatsu expects, and that’s what keeps that $500K excavator digging for years.

Related Manuals

• Komatsu PC1100-6 PC1100SP-6 PC1100LC-6 2002 Workshop Manual – 839 Pages
• Komatsu PC1100-6 PC1100SP-6 PC1100LC-6 2002 Workshop Manual 885 Pages
• Komatsu PC1100-6 Workshop Manual 1998 | 753 Pages OEM

External reference: Manual Transmission – not directly related, but good background on drivetrain principles. Manual Transmission – same resource for gear knowledge.