Komatsu PC750SE-6K Excavator Service Manual

Table of Contents

01 GENERAL ……………………………………………………………… 01-1
10 STRUCTURE AND FUNCTION ……………………………….. 10-1
20 TESTING AND ADJUSTING…………………………………… 20-1
30 DISASSEMBLY AND ASSEMBLY …………………………… 30-1
40 MAINTENANCE STANDARD………………………………….. 40-1
90 OTHERS………………………………………………………………… 90-1

GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting.

TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating Problems to Causes are also mention in this section.

DISASSEMBLY AND ASSEMBLY KOMATSU Excavator

This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations.

Abnormality in engine speed sensor system is displayed
– This troubleshooting is carried out when there is still an abnormality, so when disconnecting the connector and inserting the T-adapter, or when removing the T-adapter and returning the connector to its original position, if an E service code is not displayed, the problem has been removed.
– If the starting switch is turned OFF after an abnormality occurs, turn the starting switch ON and check if an E service code is displayed. (If it is not displayed, the problem has been removed.) Before carrying out troubleshooting, check that all the related connectors are properly inserted.
– Always connect any disconnected connectors before going on the next step.