Komatsu WA200-8 Operation & Maintenance Manual page 371

MAINTENANCE
After the engine is stopped, the DEF system devices automatically purge the DEF in the DEF injector and DEF
pump and return it to the DEF tank to prevent malfunction of the devices caused by freezing of the DEF or dep-
osition of urea.
After the engine is stopped, the devices are still operated for a few minutes. Before replacing the filter, clean
around the DEF pump first after the DEF system devices stop.
Items to be prepared
• DEF filter removal tool
• Torque wrench
1.
Remove the bolts (1) (6 pieces) and remove the fender (2).
2.
Remove the bolts (3) (9 pieces) and remove the covers (4)
and (5).
The DEF filter is located at the position shown in the fig-
ure.
MAINTENANCE PROCEDURE
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