Westerbeke 4KW-7.7KW-11KW-12 5KW Operator's Manual page 17

Diesel generator sets
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*Antifreeze
of
poor
quality
will
cause
corrosion
of
the
cooling
system,
and
thus
always
use
antifreeze containing
rust
inhibitor and prepared by a reliable maker, and never
use it mixed with antifreeze of a different brand.
ANTIFREEZE ADDITION DATA
Antifreeze
Concentration
%
13
23
30
35
45
50
60
Freezing
"C
-5
-10
-15
-20
-30
-40
-50
te!!!}?:erature ! "Fl
(23)
(14)
(5)
!-4)
!-22)
!-40)
!-58)
Note:
It
is
advisable
that
selected on the basis of
s·c
(lO'F)
lower
than
perature.
3.
Alternator belt tension
The alternator belt is properly
tense
if
it
deflects
10
to
12
nun
(0.39
to 0.47 in)
as it
is depressed with a finger be-
tween the pulley and pulley of
the
long
distance
side.
Excessive
tension
can
cause
quick
wear
of
the
belt
and
bearings of the water pump and
the
alternator.
Excessive
slackness or presence of oil on
the
belt,
on
the
other
hand,
can lead to engine overheating
and
insufficient
charging
due
to a slipping belt.
CAUTION:
antifreeze
concentration
be
a
temperature which is about
the
actual
atmospheric
tem-
Never attempt to adjust
tension of
the
fan
belt while
the
engine is in operation.
16

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4 kw7.7kw12.5 kw11kw

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