Method For Replacing Def Tank Breather Element - Komatsu WA480-8 Operation & Maintenance Manual

MAINTENANCE PROCEDURE
6.
Turn filter removal tool (3) in reverse, and remove filter (6).
Filter (6) is removed and you can take it out together with
filter removal tool (3).
If filter (6) cannot be removed from DEF pump, grip filter
removal tool (3), pull it down, then it will be removed.
7.
Slide filter (6) down, and remove spacer (5) from filter re-
moval tool (3).
8.
Pull filter (6) up while pushing in the tip of filter removal
tool (3), and remove it.
9.
Return the removed spacer (5) to filter removal tool (3),
and keep them.
10. Insert a new filter and a new equalizing element into the
bottom of DEF pump, and lightly tighten them with hand.
11. Tighten filter cap (1).
Tightening torque: 20 to 25 Nm {2.0 to 2.5 kgm}

METHOD FOR REPLACING DEF TANK BREATHER ELEMENT

Do not replace the element immediately after engine is stopped.
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WARNING
MAINTENANCE