Volvo Penta D2-75 - Manual (Page 39)

37
Vacuum valve. Cleaning
Some engines have a vacuum valve installed in the
seawater piping.
WARNING! Risk for water penetration. Close the
sea cock.
Close the sea cock. Disassemble the valve. Unscrew
the hexagonal cover. In the cover there is a mem-
brane and a gasket. Clean all the parts. Turn the
cover upside down. Install the membrane first and
then the gasket. Turn the valve housing upside down
as well. Screw the cover into position, but not too hard
(0.2 kpm), or the valve may stop working.
Seawater filter. Cleaning
The seawater filter is an accessory. Screw off cover
(1) and remove seal plate (2). Lift out and clean the
insert (3).
IMPORTANT! If the boat is used in water that
has a lot of contaminants, seaweed etc. the filter
must be checked more frequently than indicated
in the maintenance schedule. Otherwise there is
a risk the filter will clog and the engine will
overheat.
1
2
3
Maintenance: Seawater system
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