Fault Phenomenon: Komatsu 830E mining truck traction motor temperature alarm sounds, power automatically limited.

Troubleshooting Process:
– Checked cooling fan: motor cooling fan not running or airflow insufficient.
– Checked air duct: internal motor air duct clogged.
– Checked sensor: temperature sensor faulty.
– Checked load: prolonged overload operation.

Root Cause: The forced cooling fan filter for the traction motor is clogged with coal dust, causing poor motor heat dissipation.

Required Parts: Clean fan filter, inspect fan motor.