Engines & Generators
SERVICE
BULLETIN
DATE:
__
24-Apr-1_5
__
BULLETIN NUMBER:
----
276
SUB.JECT:
Generator Drive Belt Performance
MODELS
AFFECTED: 3.5 SBCG and 3.0 BCG Gasoline Generators
DETAIL: Generator drive belt life performance improvements include a belt tension adjustment
change,
the addition
of
a spring spacer, and a new idler pulley. 3.5
SBCG
generators
produced
on
or after manufacturing date code OD (April
2015)
will
have
these changes.
Changes
made
are
enhancements, modification
to
existing
products
in the field is not
covered
under
warranty.
Manufacturing
of
new
products includes. for optimum belt
break
in, adjusting
the
belt
to
a
dimension
of
1"
in
our
assembly process as illustrated below.
After
the
first
hour
of
run time
if necessary, it is adjusted again to 1" prior to releasing
the
unit
for
shipment.
Important Note: Maximum
performance
of
the drive belt
and
prevention
of
potential failure
due
to
incorrect tension requires the belt be to adjusted
to
1"
at
the
recommended
50 hour
maintenance service.
Generator drive belts for regular maintenance replacement
(part
numbers
remain the same)
wlll
be
sold as a
k.it
with
instructions that
includes
the
required spring spacer. Replacing the
pulley is
not
required. Initial
adjustment
of
the belt with
the
spacer
installed is 1
".
After
running the
unit
for
1 hour. varying AC loads in the process,
the
belt
must
be
adjusted again
to
1". After
50
hours run time,
or
during the
next
scheduled service, inspection and
adjustment to
1" is required to ensure proper belt tension.
Add
1
!8"
Spacer
Here
WEST~RB[!(E
COR!"OR
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My!J?~,
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H;:w1cocf<
Ro;id, T;:iunton,
f\11/\
02780-73:19
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Tel:
508.823.7677
1t
F;.)'('.
::io8.88<'l.9(\~p,
www.westerbeke.com
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