Komatsu PC400-8R PC450-8R Series Hydraulic Excavator Operation and Maintenance Manual – PEN00287-01

Description

Komatsu PC400-8R PC450-8R Series Operation & Maintenance Manual

This is the complete Operation & Maintenance Manual for the Komatsu PC400-8R, PC400LC-8R, PC450-8R and PC450LC-8R hydraulic excavators. Published under document number PEN00287-01, this manual covers machines from serial number PC400-75001 and up, and PC450-75001 and up. It is the same publication supplied with the machine, providing operators and maintenance personnel with the procedures needed to run, inspect, service and repair these excavators correctly.

File Details

• Manual type: Operation & Maintenance Manual
• Brand: Komatsu
• Models covered: PC400-8R, PC400LC-8R, PC450-8R, PC450LC-8R
• Document number: PEN00287-01
• Publication date: 02-08 (February 2008)
• Language: English
• Page count: Approximately 389 pages
• File format: PDF

Chapters Covered

• Foreword — California Proposition 65 Warning
• Safety Information — signal words, hazards, safety alert symbol
• Introduction — use of machine, directions of machine, visibility from operator’s seat, service meter location, machine serial numbers and distributor
• Safety Labels — location of safety labels, all warning decals and their meanings
• General Precautions Common to Operation and Maintenance — ensuring safe operation, understanding the machine, preparations for safe operation, fire prevention, precautions when getting on or off the machine, emergency exit, protective structures
• Precautions for Operation — jobsite investigation, loose ground, high-voltage cables, visibility, asbestos dust, starting engine, checks before operation, travel precautions, operating on slopes, prohibited operations, parking, transportation, towing, lifting objects with bucket
• Precautions for Maintenance — warning tags, workplace cleanliness, stopping engine, two workers for maintenance, working under machine, proper tools, welding, battery handling, high-temperature coolant and oil, high-pressure oil and fuel, high-pressure hoses and piping, high voltage, noise, track tension grease, recoil spring, accumulator and gas spring, compressed air, air conditioner, waste disposal, window washer fluid, safety critical parts
• Machine View Illustrations — overall machine view, component identification
• Detailed Controls and Gauges — monitoring system, emergency monitors, caution monitors, basic check monitors, meter display, pilot display, gauges and meters, switches, function switches, air conditioner controls, radio, auxiliary electric power, fuse, fusible link, controller, toolbox, grease pump holder, fire extinguisher
• Machine Operations and Controls — before starting engine, walk-around checks, checks before starting, starting engine, engine warm up, breaking-in new machine, stopping engine, machine operation, steering, swinging, work equipment controls, working mode, one-touch power max, prohibited operations, general operation information, traveling on slopes, escape from mud, recommended applications, bucket replacement and inversion, parking, machine inspection after daily work, locking, transportation, cold weather operation, long term storage, troubles and actions
• Maintenance — maintenance information, outline of service, handling oil fuel coolant, electric system maintenance, wear parts, recommended fuel coolant and lubricant, tightening torque specifications, safety critical parts, maintenance schedule, maintenance procedure (initial 1000 hours, when required, check before starting, every 50/100/250/500/1000/2000/4000/5000/8000 hours)
• Specifications — operating weight, bucket capacity, engine, dimensions, working ranges
• Attachments and Options — general precautions, bucket with hook, machine ready for attachment, attachment guide, recommended attachment operations, handling machines equipped with KOMTRAX
• Index

This Komatsu PC400-8R PC450-8R Series Operation and Maintenance Manual is far more than a basic owner’s guide. It is the full workshop reference that Komatsu expects operators and service technicians to use daily. The safety section alone spans dozens of pages covering every hazard you will encounter on a jobsite — from high-voltage cables and loose ground to high-pressure hydraulic oil and hot coolant. The maintenance schedule breaks down every service interval from daily checks through 8000-hour overhauls, and the maintenance procedure chapter walks through each task step by step: draining water from the fuel tank, checking hydraulic oil level, cleaning the air cleaner element, adjusting track tension, replacing bucket teeth, bleeding air from the fuel and hydraulic circuits, and hundreds of other procedures. The troubleshooting chapter (Troubles and Actions) helps you diagnose problems ranging from a discharged battery to error codes on the machine monitor, with causes and remedies listed in table form. The specifications section gives you operating weight, bucket capacity, engine output, dimensions and working ranges for all four models, so you can verify your machine’s limits before lifting or digging.

Why This Manual Matters

These Komatsu excavators are heavy, complex machines. A wrong procedure — bleeding hydraulic pressure incorrectly, adjusting track tension without following the safety steps, or ignoring a maintenance interval — can lead to component failure, downtime, or serious injury. Having the correct Operation and Maintenance Manual on hand means you follow the manufacturer’s exact specifications for fluids, torques, pressures, and service intervals. It is the difference between guessing and knowing.

Whether you are an owner-operator performing daily checks, a fleet manager scheduling maintenance, or a technician diagnosing a fault, this manual gives you the procedures, capacities, torque values, and troubleshooting tables you need. The document covers all four models — PC400-8R, PC400LC-8R, PC450-8R, and PC450LC-8R — so it applies across the entire series.

IMAGES PREVIEW

Instant PDF Delivery

This Komatsu PC400-8R PC450-8R Series Operation and Maintenance Manual is delivered as an instant PDF download. No shipping, no waiting. After payment you can access the file immediately and view it on any device — computer, tablet, or smartphone. Print the pages you need for the workshop, or keep the entire manual on a device for quick reference in the field. The PDF format lets you search, zoom, and navigate the document just like the original publication.