2.
Connect filling pump to filling connection (1)
on the intake side of the filter.
3.
Open threaded vent plugs (2) and fill with fuel
until fuel emerges from the vent pipe (3).
4.
Close threaded vent plugs (2).
5.
Open fuel shutoff valve.
6.
Check differential pressure (→ Page 100).
Result:
If flushing did not improve differential pres-
sure, replace fuel prefilter element
(→ Page 108).
Flushing fuel prefilter with re-
versible duplex filter
1.
Cut out contaminated filter (A or B):
1 Filter A cut out
2 Filter B cut out
2.
Open threaded vent plug (1) of the filter to be
flushed.
3.
Open drain valve (2) and drain fuel.
Result:
Fuel flows from filtered side back to the unfil-
tered side, flushing the filter deposits down-
wards out of the filter.
4.
Close threaded vent plug (1) and drain cock
(2).
106 | Fuel Filter | MS150119/01E 2016-02
TIM-ID: 0000064788 - 001
