SERVICE PROCEDURE MAINTENANCE
4-28
CLEAN RADIATOR FINS AND COOLER FINS 0.
WARNING
! Never open the engine side cover when the engine is running. Stop the engine completely before
starting the cleaning operation.
! If compressed air, pressurized water, or steam hits your body directly, or causes dirt to fly, it may lead
to personal injury. Always wear safety glasses, dust mask, or other protective equipment.
Clean the radiator or cleaner if mud or dirt is stuck to it.
CLEAN FINS BY ROTATING COOLING FAN IN REVERSE 0.
NOTICE
When rotating the fan in reverse, be careful of flying dust
and take steps to prevent cloth or other objects from get-
ting caught in the fan.
On jobsites where the dust accumulates on to the radiator or
cooler, turn cooling fan reverse rotation switch (1) ON to rotate
the fan in the reverse direction and blow out the dust stuck to
the radiator or cooler. This can be used to extend the cleaning
interval.
METHOD OF ROTATING FAN IN REVERSE
NOTICE
! When the engine is running, even if the switch is pressed, the direction of rotation of the fan does not
change, but the cooling fan reverse rotation pilot lamp on the machine monitor flashes. Stop the
engine, then operate the switch.
! When the fan is rotating in reverse, the pilot lamp on the machine monitor lights up. Do not carry out
operations while the pilot lamp is lighted up. The machine will be unable to display its performance
fully and it may lead to overheating. For normal operations, always use the fan rotating in the normal
direction.
! If the engine has to be stopped when the fan is rotating in reverse, run the engine at low idling, then
stop it.
1. Turn the starting switch to the OFF position and stop the engine.
2. Turn the starting switch to the ON position.
3. Set cooling fan reverse rotation switch (1) to position (a)
(ON).
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