Komatsu PC138US-11 (SERIAL NUMBERS C30001 and up) Shop Manual

40 TROUBLESHOOTING
CONTENTS
ABBREVIATION LIST
RELATED INFORMATION ON TROUBLESHOOTING
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE)
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE)
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H
MODE)
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE)
FAILURE MODE AND CAUSE TABLE
ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT WORK
ALL WORK EQUIPMENT, SWING AND TRAVEL LACK SPEED AND POWER
FINE CONTROL PERFORMANCE OR RESPONSE IS POOR
UNUSUAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP
ENGINE SPEED DROPS LARGELY OR ENGINE STOPS
SPEED OR POWER OF BOOM IS LOW
ARM SPEED OR POWER IS LOW
BUCKET SPEED OR POWER IS LOW
BLADE SPEED OR POWER IS LOW
WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION
HYDRAULIC DRIFT OF BOOM IS LARGE

SEN06662-C2

SERIAL NUMBERS C30001 and up