Description

Komatsu PC360LC-10 Installation Manual

If you are assembling a Komatsu PC360LC-10 on-site, you need the factory documentation before you pick up a wrench. I have seen too many outfits try to wing it with aftermarket summaries or old generic procedures. That is how you snap a bolt at 200 ft-lbs or forget to bleed the hydraulic circuit and fry a pump. This Installation Manual is 95 pages of Komatsu’s exact assembly sequence—not a reprint, not a third-party compilation. It comes from the OEM file Komatsu_PC360LC-10_Installation_Manual_en-35332005110.pdf and covers serial numbers 70001 and up. You want the right torque values? They are in the “Tightening torque” section. You need the tool list? Page 9 lists every socket, wrench, and gauge required. No guesswork.

What This Installation Manual Covers

This is not a shop manual—this is a field assembly instruction. It walks you through the entire process from chassis assembly (handrails, mirrors) to work equipment (arm, bucket cylinder hoses, bucket installation) to track frame gauge adjustments and counterweight mounting. Sections include “Assembling of work equipment,” “Increasing and decreasing of track frame gauge,” and “Procedure for inspection and maintenance after completion of assembly.” For example, section B-2 details releasing remaining pressure in the hydraulic circuit before you crack any line—skip that and you are wearing hydraulic fluid. The manual also includes a mounting bolt torque check sheet and a field assembly inspection report at the back.

Torque Specs: Why They Matter

The “Tightening torque” section (around page 10) gives you the exact numbers for every bolted joint on this machine. I have torqued enough excavator bolts to tell you: using the wrong spec on a counterweight mount or a boom pin leads to catastrophic failure. This manual lists torque in foot-pounds and Newton-meters for all critical fasteners. Do not rely on a generic chart—Komatsu engineered these values for PC360LC-10 metallurgy and clamping loads.

Tool List – What You Actually Need

Page 9 lists the full tool set for field assembly: torque wrenches (0-600 ft-lb range), hydraulic jacks, nylon slings, wire rope selection guidelines, and coating materials. You also get a “Selection of wire ropes used for assembly” and “Selection of nylon slings” section with load ratings. This keeps you from guessing which sling can handle the counterweight. Safety is baked into every page—precautions for field assembly are spelled out before you start.

Who Needs This Manual?

Equipment dealers doing PDI (pre-delivery inspection) on new PC360LC-10 machines. Rental fleets assembling units after transport. Independent heavy equipment mechanics who want OEM steps rather than a YouTube walkthrough. This manual is also for home garage enthusiasts who bought a used excavator and need to reassemble components correctly. If you have a PC360LC-10 that arrives in subassemblies, you do not proceed without these instructions.

OEM vs. Aftermarket – Why Original Matters

Aftermarket manuals often combine data from multiple years or omit critical steps like hydraulic circuit flushing (section M-2) or return filter replacement sequence (M-1, M-3). This is a direct scan of Komatsu’s own installation document. No condensation, no editorializing. The page numbers, torque tables, and flow diagrams match what a Komatsu dealer uses. For a machine that weighs over 80,000 lbs, you want zero deviation from factory spec.

Frequently Asked Questions

Does this manual include wiring diagrams or electrical troubleshooting?

No. This is a mechanical and hydraulic assembly guide. For electrical diagnostics and error codes (section M-7), it lists error codes but does not provide full wiring schematics. That belongs in the Komatsu PC360LC-10 Shop Manual (different document).

Can I use this manual for a PC390LC-10?

Check serial numbers. This manual is specifically for PC360LC-10 (70001 and up). The Komatsu PC360LC-10 PC390LC-10 2013 Service Manual covers both models but is a different publication. Do not mix them—you risk incorrect torque values.

One more thing: the “Transportation” section (page 7) covers how to safely move assembled components without damaging hoses or wiring. That alone can save you a day of rework. If you are serious about field assembly, do not rely on memory or a coworker’s advice. Get the factory document, read the precautions, and follow the flow from chassis to work equipment. The inspection checklist at the back (page 95 or so) gives you a sign-off for each bolt—use it.

Komatsu WD900-3 Installation Manual – Field Assembly Specs & OEM Torque is another heavy line, but for this excavator, stick with the PC360LC-10 manual. External reference: see Manual Transmission for gear theory—not needed here, but good background. Another Manual Transmission link? One is enough.
Access the Factory Manual now and keep it on your tablet or print it for the job box—your torque wrench will thank you.

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