Komatsu PC270LL-7L - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is an Operation & Maintenance Manual for the Komatsu PC270LL-7L Hydraulic Excavator. It provides comprehensive information for the safe and effective use, maintenance, and troubleshooting of the machine. The manual is identified by the publication number CEAM014701 and is applicable to serial numbers PC270LL-7L A86001 and up, featuring a 6D102E-2 engine. This material is proprietary to Komatsu America International Company and is protected against unauthorized reproduction or disclosure. Komatsu emphasizes a continuous program of research and development, reserving the right to make changes or improvements to their products without obligation to install such changes on previously sold units. Customers are advised to contact their distributor for the latest revision information. The manual was published in March 2016 and is copyrighted by Komatsu America Corp.

Function Description:

The Komatsu PC270LL-7L is a hydraulic excavator primarily designed as a forestry machine. Its intended uses include log loading, log stacking, stump handling, log unloading, and log handling. The machine is also suitable for road building applications, with specific recommendations provided in the manual. The excavator operates with a hydraulic system, which is critical for its various functions, and requires careful management of pressure and fluid.

Important Technical Specifications:

Model: PC270LL-7L Hydraulic Excavator
Serial Numbers: PC270LL-7L A86001 and up
Engine: 6D102E-2
Engine Type: Diesel engine, compliant with EPA and California regulations for large non-road compression ignition engines.
Emission Control: The engine is designed, built, and equipped to conform to U.S. Federal emission regulations, with a warranty period of five years or 3,000 hours of operation, whichever comes first, from the date of delivery.
Hydraulic System: Features an accumulator and requires specific procedures for air bleeding and pressure release in the control circuit.
Electrical System: Includes a battery, alternator, starting motor, and an electronic control system.
Fuel System: Utilizes a fuel control dial, fuel filter cartridge, and fuel strainer.
Cooling System: Equipped with a radiator, oil cooler, and condenser fins, requiring specific coolant and maintenance.
Track System: Features track shoes with bolts and requires regular tension checks and adjustments.
Safety Features: Includes a safety lock lever for operation, emergency stop items, and various warning labels.

Usage Features:

Operator's Cab: Designed with an operator's seat, storage box for the manual, ceiling window, and front window. Emergency exit procedures are detailed for both inside and outside the cab.
Controls and Gauges: The machine monitor provides essential information, including radiator water level, engine oil level, maintenance interval, charge status, fuel level, air cleaner clogging, engine water temperature, hydraulic oil temperature, and engine oil pressure. Pilot displays and various meters are also present.
Switches: Includes a starting switch, fuel control dial, cigarette lighter, swing lock switch, lamp switch, alarm buzzer stop switch, horn switch, log loader grapple rotation CW/CCW switches, log loader grapple close/open switches, power max switch, room lamp switch, emergency pump drive switch, swing brake cancel switch, working mode selector switch, auto-deceleration switch, travel speed selector switch, wiper switch, window washer switch, maintenance switch, select switch, back switch, up/down switches, input confirmation switch, and liquid crystal monitor adjustment switch.
Levers and Pedals: Features safety lock lever, travel levers, and work equipment control lever.
Attachments: The manual covers attachment installation, combinations, and specific safety rules for lifting objects with the bucket.
Operation Modes: Includes various working modes and a one-touch power max switch for enhanced performance.
Travel: Detailed instructions for moving forward, backward, steering, traveling on slopes, and permissible water depth.
Cold Weather Operation: Specific guidelines for starting the engine, fuel, lubricants, cooling system coolant, and battery management in cold conditions.
Transportation: Procedures for loading and unloading the machine with a trailer, securing it, and lifting it.
Troubleshooting: Guidance for issues such as running out of fuel, phenomena that are not failures, towing, and problems with the electrical system, chassis, engine, and electronic control system.

Maintenance Features:

Maintenance Schedule: A detailed chart outlining maintenance intervals (10 hours, 100 hours, 250 hours, 500 hours, 1000 hours, 2000 hours, 4000 hours, 5000 hours) for various components.
Lubrication: Instructions for lubricating the road builder machine, swing circle, and checking oil levels in the machinery case, final drive case, and damper case.
Fluid Management: Procedures for checking and adding window washer fluid, checking radiator water level, engine oil level, hydraulic oil level, and battery electrolyte level.
Filter Replacement: Guidelines for replacing engine oil filter cartridge, fuel filter cartridge, and hydraulic filter element.
Cleaning: Instructions for cleaning air cleaner element, inside of cooling system, radiator fins, oil cooler fins, condenser fins, and internal/external air filters of the air conditioner system.
Adjustments: Procedures for adjusting track tension, bucket clearance, air conditioner compressor belt tension, engine valve clearance, and checking electrical intake air heater.
Component Checks: Regular checks for track shoe bolts, swing pinion grease level, turbocharger tightening parts and rotor play, fan belt tension, alternator, starting motor, vibration damper, and water pump.
Hydraulic System Maintenance: Includes bleeding air from the hydraulic system, releasing internal pressure, changing oil in the hydraulic tank, and cleaning the hydraulic tank strainer.
Safety Critical Parts: A list of safety-critical parts that require periodic replacement.
Special Procedures: Instructions for handling high-pressure oil and hoses, welding, removing battery terminals, and precautions regarding recoil springs.
Product Publications: Information on ordering parts books, operation and maintenance manuals, and service manuals from Komatsu distributors.
Environmental Considerations: Guidelines for handling waste materials and avoiding mixing lubricants.
Pre-Operation Checks: A comprehensive list of checks to perform before starting the engine and before operation.
Break-in Period: Specific instructions for operating the machine during the initial 100 hours to ensure optimal performance and longevity.