Komatsu WA270-7 Wheel Loader Service Manual

Table of Contents

• Index and Foreword
• Specification
• Standard value tables
• Testing and adjusting
• Troubleshooting
• Disassembly and assembly
• Maintenance standard
• Appendix
• Diagrams and drawings
• Index

Manual Extract Battery disconnect switch function:

Precautions for using battery disconnect switch
• The system operating lamp lights up when the controller is turned ON. Even if the starting switch is in the OFF position, the lamp lights up while the KOMTRAX is performing communication.

• Do not turn OFF the battery disconnect switch while the system operating lamp is lighting up.
• If the battery disconnect switch is turned OFF while the lamp is lighting up, the data in the controller may be lost and the controller may be damaged seriously.

• Do not turn OFF the battery disconnect switch while the engine is running or immediately after the engine is stopped.
• If the battery disconnect switch is turned OFF while the alternator is generating power, the generated current has nowhere to go, leading to overvoltage in the electrical system of the machine, which may cause serious damage to the electrical system, including the electric devices and controllers.

• If the battery disconnect switch is turned OFF for a long period, the machine monitor and the clock of the radio may be initialized. In this case, re-setting is required.