Komatsu PC27MR-3 PC30MR-3 PC35MR-3 Hydraulic Excavator Shop Manual SEN04063-07 PDF Download

Description

Komatsu PC27MR-3, PC30MR-3, PC35MR-3 Hydraulic Excavator Shop Manual

This is the full Komatsu Shop Manual for the PC27MR-3, PC30MR-3 and PC35MR-3 hydraulic excavators, published under document number SEN04063-07. It is a complete workshop reference covering specification data, structure and function, standard values, testing and adjusting, troubleshooting by failure code, disassembly and assembly, plus hydraulic and electrical circuit diagrams. Whether you are servicing a mini excavator in your own yard or running a repair shop, this Komatsu PC27MR-3 PC30MR-3 PC35MR-3 shop manual gives you the manufacturer’s procedures, torque figures, pressures and clearances in one downloadable file.

File Details

• Manual Type: Shop Manual (Service & Repair)
• Brand: Komatsu
• Models Covered: PC27MR-3, PC30MR-3, PC35MR-3
• Language: English
• Page Count: 779 pages
• File Format: PDF
• Document Number: SEN04063-07

Chapters Covered

• 00 Index and foreword
• 01 Specification
• 10 Structure, function and maintenance standard
• 20 Standard value table
• 30 Testing and adjusting
• 40 Troubleshooting
• 50 Disassembly and assembly
• 90 Diagrams and drawings

Index and Foreword

The opening section lays out the composition of the shop manual, safety notices, how to read the manual and its symbols, an explanation of terms used in the maintenance standard, handling of electric equipment and hydraulic components, engine connector handling, how to read electric wire codes, precautions during operation, push-pull coupler procedures, a standard tightening torque table and a conversion table. The safety chapter covers general precautions, preparation for work, precautions during work, sling work and sign making, mobile and overhead crane use, wire rope selection, and handling of the air conditioner circuit.

Specification

Specification and technical data for all three machines, including specification dimension drawings, working range drawings and full specification tables. This chapter gives you the operating weight, bucket capacity, engine model and rated output, overall length, height, width, shoe width, tail swing radius, track length, tumbler centre distance, ground clearance, travel speeds and continuous swing speed for the PC27MR-3, PC30MR-3 and PC35MR-3. Also included are engine details, performance figures, undercarriage data, hydraulic system type, pump capacities, set pressures, control valve type, hydraulic motor data, hydraulic tank details, and the cylinders used on boom, arm, bucket, boom swing and blade. A separate weight table lists the weights of every major assembly and component for safe lifting.

Structure, Function and Maintenance Standard

This is the technical heart of the Komatsu PC27MR-3 PC30MR-3 PC35MR-3 shop manual, broken into engine and cooling system, power train, undercarriage and frame, hydraulic system parts 1–3, work equipment, cab and its attachments, and electrical system. You get the PTO and cooling system layout, swing circle and swing machinery design, track frame, idler cushion, idler, track roller, carrier roller, sprocket and track shoe, hydraulic component layout, hydraulic tank and filter, centre swivel joint, travel motor, hydraulic cylinder, solenoid valve, multi-control valve, hydraulic pump, control valve, CLSS operation, swing motor, PPC valve, work equipment dimensions, floor and air conditioner, and the engine control system, electric control system, auto-deceleration, attachment proportional switch, breaker operation switch, work mode selection, flow control, KOMTRAX system, monitor system and sensors.

Standard Value Table

The standard service value table gives you the standard value for a new machine and the service limit value for engine-related parts and chassis-related parts. It covers engine speed, exhaust gas colour, valve clearance, compression pressure, oil pressure, fuel injection timing, belt tension, hydraulic pressures, swing and travel performance, hydraulic drift, work equipment speed, time lag, internal leakage, and hydraulic pump performance. These are the numbers you check against when testing, adjusting and troubleshooting.

Testing and Adjusting

Step-by-step procedures for testing and adjusting the machine, including engine speed, exhaust gas colour, valve clearance, compression pressure, engine oil pressure, fuel injection timing, alternator belt tension, air conditioner compressor belt tension, fuel control lever, swing circle bearing clearance, track shoe tension, oil pressures in the work equipment, travel, boom swing, swing and blade circuits, LS differential pressure, PC valve, control pump circuit oil pressure, solenoid valve output pressure, PPC valve output pressure, PPC valve adjustment, swing holding brake release pressure, travel deviation, oil leakage from work equipment cylinders, bleeding air from each part, releasing residual pressure from the hydraulic circuit and hydraulic tank, pressurizing the hydraulic tank, how to open and close the tilt floor, diode inspection, and operator and service mode functions and flow.

Troubleshooting

Troubleshooting is split into failure code table and fuse locations, general troubleshooting information, troubleshooting by failure code, electrical system troubleshooting (E-mode), hydraulic and mechanical system troubleshooting (H-mode) and engine troubleshooting (S-mode). The failure code section covers communication errors, power supply errors, sensor power supply errors, switch errors, potentiometer errors, relay errors, EPC valve errors and fuel control motor errors. The E-mode section walks through the engine not starting, engine not stopping, monitor faults, alarm buzzer, oil pressure caution, charge level caution, preheating, coolant temperature gauge, fuel level gauge, service meter, travel speed selection, working lamp, work equipment lock lever, wiper, washer, air conditioner and KOMTRAX faults. The H-mode section tackles low speed or power across the whole machine, engine stall, systems not working, abnormal pump noise, fine control, boom, arm, bucket, boom swing, travel, swing and blade problems, hydraulic drift, time lag, compound operation and steering. The S-mode section covers starting, engine stop, pick-up, hunting, output, exhaust smoke, oil consumption, contamination, fuel consumption, coolant, oil pressure, oil level, overheating, noise and vibration.

Disassembly and Assembly

Removal, installation, disassembly and assembly procedures for the fuel injection pump, radiator and hydraulic oil cooler, engine and hydraulic pump, swing motor and swing machinery, swing circle, track shoe, idler, recoil spring, track roller, carrier roller, revolving frame, centre swivel joint, control valve, hydraulic cylinder, work equipment, cab glass, front window, floor frame and air conditioner unit. Each procedure is supported by special tool lists, coating material lists, tightening torques and safety notes.

Diagrams and Drawings

The final chapter provides hydraulic circuit diagrams and electrical circuit diagrams, plus a connector list and stereogram, so you can trace circuits and understand how the systems are connected.

Why This Komatsu Shop Manual Matters

Mini excavators like the PC27MR-3, PC30MR-3 and PC35MR-3 work in tight spaces, on slopes and around utilities, so correct pressures, torques and clearances are not optional. This Komatsu PC27MR-3 PC30MR-3 PC35MR-3 shop manual gives you the manufacturer’s own specifications and procedures — from the 3D82AE-6 and 3D88E-6 engine data to the CLSS hydraulic system, PPC valve adjustment and travel deviation correction. You can diagnose a fault code, test a circuit, set a relief pressure, rebuild a cylinder, pull a swing motor or replace a track roller with the right sequence, the right tools and the right values.

If you maintain or repair these Komatsu mini excavators, this Komatsu PC27MR-3 PC30MR-3 PC35MR-3 repair manual is the reference you keep on the workshop tablet. It covers serial numbers PC27MR-3 20002 and up, PC30MR-3 30001 and up, and PC35MR-3 15001 and up, so it stays relevant across the model run.

IMAGES PREVIEW

Delivery is instant: after payment you download the PDF and you are working. No shipping, no waiting, no damaged paper copy. Open it on a laptop, tablet or phone in the workshop, print the pages you need for the job, and keep the full 779-page manual on file for the next machine.