Westerbeke 15.0KW -60Hz EDT Návod k obsluze Strana 56

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Sea
Water
The
sea
water pump is a bell-driven pump with a non-ferrous
impelier.
The impeller
has
flexible vanes which wipe against a curved cam within the
im""I1,,,
lU'U",IlU.
producing the pumping action. On
no
account should this pump be
run
dry. There should always
be
a
spare impeller and impeller cover gasket on board
(an
impeller kil).
Alternator (DC) and Water Pump Drive Belt Tension
Never
attempt
to
adjust the drive belt's tension while the engine
is
in
operation.
CAUTION
Excessive alternator and water
pump
drive belt tension can cause rapid wear of the belt and
reduce the service
life of the fresh water
pump
and alternator shaft bearings. Excessive slack
or
the presence
of
oil on the belt
can
cause bell slipping, resulting in high operating tempera-
tures, as well as insufficient alternator output.
The alternator and water
pump
drive belt is properly adjusted if the belt can be deflected
no
less
than
3/8
inch and
no
more than 1/2 inch
(10
mm, 12 mm) as the belt is depressed with the
thumb
at
the
midpoint
be-
tween the
two
pulleys
on
the longest span
of
the belt. (See the figure below.) A spare drive belt should be
carried on board.
Alternator and Water
Belt
Tension
Westerbeke
Generators
52
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