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Pre-feed module – Filter ele-
ment replacement
Note:
Shutoff devices for urea solution lines must
be provided on-board.
1.
Shut off supply and return line from pre-feed
module to tank.
2.
Provide an appropriate container to collect
the urea solution.
3.
Clean pre-feed module (1) before opening it.
4.
Undo filter housing (2) with filter wrench and
drain urea solution into a suitable container.
5.
Remove filter element by pulling it down-
wards.
6.
Replace O-ring.
7.
Insert new filter element in filter housing (2).
8.
Screw in filter housing (2) up to stop then
turn back a quarter turn.
9.
Open supply and return line from pre-feed
module to tank before starting engine.
186 | Exhaust Gas Aftertreatment | MS150123/01E 2017-05
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