Komatsu HM300-1 Dump Truck Service Manual

Table of Contents

01 GENERAL …………………………………………………………………………….. 01-1
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD …… 10-1
20 TESTING AND ADJUSTING ……………………………………………………. 20-1
30 DISASSEMBLY AND ASSEMBLY …………………………………………… 30-1
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 for KOMATSU Dump Truck HM300-1
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

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.

Removing, installing, and drying connectors and wiring harnesses

Disconnecting connectors
(1) Hold the connectors when disconnecting.
When disconnecting the connectors, hold the connectors and not the wires. For connectors held by a screw, loosen the screw fully, then hold the male and female connectors in each hand and pull apart. For connectors which have a lock stopper, press down the stopper with your thumb and pull the connectors apart.
Never pull with one hand.
(2) When removing from clips
When removing a connector from a clip, pull the connector in a parallel direction to the clip.
If the connector is twisted up and down or to the left or right, the housing may break