F 54 32
AdBlue
®
/ DEF dosing unit
m
Do not disconnect the vehicle batteries
until the dosing system has finished the
rinsing cycle. Wait for at least 5 minutes
after the ignition has been switched off
before starting to work on the
dosing unit.
Replace filter element
- Place a suitable container under the
filter housing to catch any AdBlue
®
/
DEF residues.
- Unscrew the cover (A) (27mm
wrench) and compensating element (B).
- Remove the filter (C) using the corresponding service tool (supplied with the filter).
The tool engages on the filter with a "click".
A
Use the side of the service tool with the same colour markings as the filter.
m
Depending on their condition, the com-
pensation element and filter must be re-
placed after they have been removed.
A
Check the cover (A), cover thread and
thread (D) of the dosing unit for any
damage and replace if necessary!
- Clean the cover (A), the cap thread
and the dosing unit with warm water
and a clean cloth.
A
Do not oil the O-rings and gaskets of
the filter!
- Insert the compensating element (B)
in the filter cartridge (C) and push this
into the dosing unit.
- Fit the cover (A).
Torque: 20 Nm.
m
Let the engine run for at least 15 minutes
so that the system reaches operating
temperature. Look out for any leaks.
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