Komatsu PC138US-8 PC138USLC-8 Excavator Operation and Maintenance Manual – PDF Download

Description

Komatsu PC138US-8 and PC138USLC-8 Operation and Maintenance Manual

The Komatsu PC138US-8 and PC138USLC-8 Operation and Maintenance Manual (Form TEN00189-01) is the complete reference for operating, servicing, and maintaining these GALEO hydraulic excavators. Whether you are an operator running daily checks, a technician performing scheduled maintenance, or a fleet manager planning service intervals, this manual provides the procedures and specifications needed to keep the machine productive and safe. It covers both the standard and blade-equipped configurations, along with the SAA4D95LE-5 diesel engine that powers both models.

File Details

• Manual type: Operation and Maintenance Manual
• Brand: Komatsu
• Models covered: PC138US-8, PC138USLC-8
• Engine: SAA4D95LE-5 diesel engine
• Document number: TEN00189-01
• Date: March 2007 (03-07)
• Language: English
• Page count: 375
• Format: PDF

Chapters Covered

• Foreword
• Safety Information
• Introduction
• Product Information
• Safety
• Operation
• Maintenance
• Specifications
• Attachments and Options

Foreword and Product Information

The manual opens with the California Proposition 65 warnings, the emissions warranty statement (including the French-language Canadian version), and the Komatsu introduction covering intended applications such as digging, leveling, ditching, loading, and demolition work. Product identification details are documented here, including the PIN/machine serial number plate location on the bottom right of the operator’s cab, the EPA engine number plate on the fuel main filter bracket, and the service meter location on top of the machine monitor. These details let you accurately identify the machine and engine when ordering parts or requesting service.

Safety

This section is one of the most detailed in the manual, spanning safety labels and their exact placement on the machine, general precautions for operation and maintenance, and specific safety rules for machine operation and maintenance work. Every safety label is reproduced with its part number and location, covering warnings for electric cables, hot coolant, high-pressure oil, battery hazards, swing area restrictions, and more. The safety section covers working wear and personal protective equipment, fire prevention and explosion prevention, safe starting and stopping procedures, traveling on slopes, lifting objects with the bucket, towing safety, and maintenance-specific hazards such as high-pressure grease, recoil springs, accumulators, and high-voltage injector terminals. The safety maintenance information includes warning tag procedures and the two-worker rule for maintenance when the engine is running.

Operation

The operation section walks through the complete machine controls and gauges, including the monitoring system with its emergency monitors, caution monitors, and basic check monitors. It explains the working mode selector (P, E, L, B, and ATT modes), travel speed selection, auto-deceleration, wiper and washer controls, air conditioner operation, radio controls, and the machine monitor’s function switches. From there, the manual details pre-start checks, engine starting procedures in normal and cold weather, warm-up operations for both the engine and hydraulic equipment, and the full range of machine operations: traveling, steering, swinging, work equipment controls, and working mode selection. Transportation procedures, loading and unloading with a trailer, lifting the machine, cold weather operation, long-term storage, and troubleshooting guidance for common issues round out this section.

Maintenance

The maintenance section is the largest part of the manual, covering everything from the maintenance schedule chart and wear parts list to detailed procedures for every service interval. You will find the recommended fuel, coolant, and lubricant specifications with ambient temperature charts and capacities, tightening torque specifications for metric bolts and hydraulic hoses, safety critical parts with replacement intervals, and the complete maintenance schedule broken down into when-required tasks and every-100, 250, 500, 1000, 2000, 4000, 5000, and 8000-hour maintenance. Procedures cover air cleaner servicing, cooling system cleaning, track shoe bolts and track tension adjustment, bucket tooth replacement (both vertical and horizontal pin types), bucket clearance adjustment, air conditioner maintenance, and hydraulic system air bleeding. The manual also includes the maintenance interval for machines equipped with a hydraulic breaker.

Specifications

The specifications section provides the key dimensions and performance data for both the PC138US-8 and PC138USLC-8, including machine weight, bucket capacity, engine horsepower, overall length, height, width, track width, tail swing radius, track length, tumbler center distance, cab height, ground clearance, travel speed, and swing speed. The working ranges table gives maximum digging reach, digging depth, digging height, vertical wall digging depth, dumping height, minimum swing radius, and blade lifting and lowering depths. A separate specifications table covers the blade-equipped configurations for both models.

Attachments and Options

The attachments section covers the machine ready for attachment configuration, including stop valve and selector valve operation, attachment control pedal positions, accumulators, and the breaker circuit additional oil filter. It explains hydraulic circuit connection for one-line attachments, attachment removal and installation, and recommended attachment operations for hydraulic breakers. The attachment guide includes combination tables for standard, long, and short arms, track shoe selection by application category, and KOMTRAX machine management system information.

What This Manual Enables You to Do

With the Komatsu PC138US-8 and PC138USLC-8 Operation and Maintenance Manual on hand, you can confidently perform daily walk-around inspections and pre-start checks, diagnose warning monitor alerts and error codes (including E02, E03, E10, E11, E14, E15, and E0E conditions), execute scheduled maintenance from 100-hour greasing through 8000-hour high-pressure piping clamp replacement, and troubleshoot common electrical, chassis, and engine problems. The manual gives you the correct procedures for releasing hydraulic pressure safely, bleeding air from the hydraulic system after repairs, and adjusting track tension without risking injury from the grease plug. It also provides the torque values, capacities, and adjustment specifications needed to complete each job to Komatsu’s standards.

Why Accurate Procedures and Specifications Matter

Hydraulic excavators operate under extreme pressure and load conditions, and small mistakes can lead to expensive component damage, unsafe machine behavior, or personal injury. Using the correct torque on track shoe bolts, the right oil viscosity for the ambient temperature, and the proper sequence for releasing hydraulic pressure are not optional details – they are the difference between a machine that lasts and one that fails early. The manual’s safety critical parts list, with its 2-year or 4000-hour replacement intervals for hoses and seat belts, exists precisely because some components degrade in ways that are difficult to detect by inspection alone. Following the manufacturer’s procedures and specifications protects both the machine and the people working around it.

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Instant PDF Delivery

This Komatsu PC138US-8 PC138USLC-8 Operation and Maintenance Manual is delivered as a PDF file immediately after payment. There is no shipping, no waiting for a physical book, and no restriction on which device you use it on. Open it on a laptop in the shop, a tablet in the cab, or a phone at the jobsite. Print the pages you need for a particular job and keep the full manual on file for reference. The PDF format lets you search for specific procedures, specifications, or error codes quickly, so you spend less time flipping through pages and more time getting the work done.