2.
Open vent valves (1) of filter to be drained.
3.
Open drain valve (2).
4.
Drain water and contamination from filter un-
til clean fuel emerges.
5.
Close drain valve (2).
6.
Open rotary slide valve (2) a little (turning to
approx. 30°) to introduce fuel into the filter
housing with the new filter element.
7.
Close vent valve (1) as soon as fuel emerges
from vent pipe (4).
8.
Turn the rotary slide valve to the upright posi-
tion (3) until it engages.
Result:
Both filters are cut in.
9.
Set differential pressure gage (→ Page 161).
MS150046/03E 2018-08
| Fuel Filter | 163
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Summary of Contents for 20V4000M73 series
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