Komatsu PC300-8M2, PC300LC-8M2, PC350-8M2, PC350LC-8M2, PC360-8M2, PC360LC-8M2 Hydraulic Excavator Operation and Maintenance Manual (PEN01726-02)

These PC300–PC360-8M2 excavators usually live in quarries, heavy civil sites, and loading out trucks all day, so keeping a steady maintenance rhythm is what keeps them earning. This Operation and Maintenance Manual is what I use to plan services, walk operators through daily checks, and decide what needs attention before it fails. If, for example, the boom cycle starts slowing or the machine feels “lazy” on the controls, I’ll go back to this book to verify inspection points, operator settings, and basic checks before calling in deeper diagnostics.

Applications & Use Cases

• Set up a realistic service schedule so the machine comes in for work before wear turns into downtime.
• Guide daily and weekly inspections for pins, hoses, filters, and track gear to catch looseness and leaks early.
• Verify operating practices so operators aren’t overloading the machine or running it in the wrong mode all day.
• Trace minor performance complaints (slow functions, odd noises, heat) through basic checks before tearing into components.
• Plan long shutdowns or seasonal layups so the excavator comes back ready without surprise failures.

FAQ

Q: Can I keep this manual on a tablet in the cab?

A: Yes, it’s well-suited for digital use; you can zoom diagrams and search terms quickly while you’re on site.

Q: Is it worth printing parts of it?

A: I’d print the inspection and service-interval pages and keep them in the shop so techs can tick off tasks as they go.

Safety Note

Always follow the manual’s lockout, support, and depressurizing steps before you put a tool on any part of the machine.