Komatsu D61EX-24 Operation & Maintenance Manual page 343

MAINTENANCE PROCEDURE
4.
Open engine side cover (6).
5.
Remove front cover (7) and engine side covers (8) and (9).
6.
Open hydraulic tank inspection cover (10).
7.
Open fuel tank inspection cover (11).
8.
Turn starting switch (1) to ON position.
9.
With the user menu on the machine monitor, set "Machine
Setting" to the Fan Reverse Mode.
For setting of the Fan Reverse Mode, see "REVERSE HY-
DRAULIC FAN".
REMARK
Even if Fan Reverse Mode is set while the engine is run-
ning, the fan rotation direction is not reversed.
The screen in the figure is displayed to inform the operator
that the direction of rotation of the fan has not been
changed.
Stop the engine once and perform the steps 3 to 8.
10. Turn the starting switch (1) to START position and start the
engine.
The hydraulic fan rotates in reverse.
11. Turn the fuel control dial at High idle (MAX) position, and run the engine at high idle.
Change the time for running the engine at high idle corresponding to the seriousness of clogging.
Normal clogging: 1 to 2 minutes
Excessive clogging: 2 to 3 minutes
12. After cleaning, turn the fuel control dial to Low idle (MIN) position.
Run the engine at low idle for approximately 10 seconds.
13. Turn starting switch (1) to OFF position and stop the engine.
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MAINTENANCE