EXPLANATION OF COMPONENTS
OPERATION
CONTROLLER (COMPUTER) The front and rear governors, pump controllers, and VHMS controllers are installed inside the room under the cab. NOTICE ● Never splash or spill water, mud or drink over the controllers as this may cause a fault. ● If a fault occurs in the controller, do not attempt repair, but consult your Komatsu distributor. 1. Engine controller Engine controller (1) is under the line filter hose found when the second side door from the left of the machine is opened. ●
When removing the engine controller, do as follows. 1. Turn the starting switch OFF, wait for at least 3 minutes, then remove the negative (–) terminal of the battery. 2. Remove the positive (+) terminal of the battery.
REMARK The engine controller is cooled by the air conditioner cooler. To prevent any drop in the cooling function, check before starting operations that the cooling hoses have not come out, are not cracked, and that the clamps are not loose.
2. Pump controller Pump controller (2) is inside the cab room. ●
When removing the pump controller, do as follows. 1. Turn the starting switch OFF, wait for at least 3 minutes, then remove the negative (–) terminal of the battery. 2. Remove the positive (+) terminal of the battery.
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