Komatsu H70051 Series Operation & Maintenance Manual page 390

MAINTENANCE PROCEDURE
2.
Remove filter cap (3) at the bottom of DEF pump, and re-
move equalizing element (4).
3.
Turn cap (6) of filter removal tool (5) and remove it.
4.
Check the installation of spacer (7).
5.
Insert filter removal tool (5) into the bottom of the DEF
pump and thrust in with hand.
6.
Check that filter removal tool (5) is fully inserted to the end.
Insert the filter to the end where you cannot thrust it in any
further.
7.
Turn filter removal tool (5) in reverse, and remove filter (8).
Filter (8) is removed and you can take it out together with
filter removal tool (5).
If filter (8) cannot be removed from DEF pump, grip filter
removal tool (5), pull it down, then it will be removed.
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MAINTENANCE