DETAILED CONTROLS AND GAUGES OPERATION
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CONTROLLER 3
q Do not let water, mud, or juice spill on the controller. This will cause failures.
q If any problem occurs in the controller, do not repair it by yourself. Please contact your Komatsu dis-
tributor for repairs.
(1): Engine controller
There are two engine controllers: one each on the left and right
sides of the engine body.
q When removing the engine controller, use the following
procedure.
1. Turn the starting switch OFF, wait for 3 minutes, then
remove the negative (-) terminal of the battery.
(For machines equipped with the optional battery isolator
switch, turn the starting switch OFF, then wait for at least 3
minutes before turning the battery isolator switch OFF.)
2. Remove the positive (+) terminal of the battery.
(2): Pump controller
There are two pump controllers under the assistant's seat.
q When removing the pump controller, remove as follows.
1. Turn the starting switch OFF, wait for 3 minutes, then
remove the negative (-) terminal of the battery.
(For machines equipped with the battery isolator switch
(option), turn the starting switch OFF, then wait for at least
3 minutes before turning the battery isolator switch OFF.)
2. Remove the positive (+) terminal of the battery.
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