4.
Open threaded vent plug (1) of filter to be
serviced.
5.
Open drain plug (1).
6.
Allow water to drain until fuel emerges.
7.
Close drain plug (2) again.
8.
Drain second filter on module, from
(→ Step 4).
9.
Close threaded vent plug again.
10.
Open fuel supply.
11.
Vent fuel prefilter (→ Page 155).
Draining fuel prefilter with high
pressure, version B
Note:
The fuel prefilter can be drained during
engine operation or with the engine at a
standstill!
1.
Provide a suitable container to collect the wa-
ter.
2.
Take care when opening drain plug (1) be-
cause fuel or water can spurt out.
3.
Allow water to drain until fuel emerges.
4.
Close drain plug (2) again.
144 | Fuel Filter | MS15054/03E 2018-07
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