Timing Belt Inspection And Replacement - Westerbeke 8.0KW-60HZ Operator's Manual

ENGINE ADJUSTMENTS
NOTE:
WESTERBEKE recommends that the following engine
adjustments be peiformed by a competent engine mechanic.
The information below is provided to assist the mechanic.
TIMING BELT INSPECTION AND REPLACEMENT
A
CAUTION:
Water or oil on the timing belt severly
reduces the service life of the belt. Keep the timing
belt sprocket and tensioner free of oil and greese.
These parts should never be cleaned. Replace if seri-
ously contaminated with dirt or oil. If oil is evident on
these parts, check the front case, oil pump oil seals,
and crankshaft oil seals for
a
possible leak.
\ TIMING BELT ASSEMBLY
7
SPROCKET BOLT
5
BELT TENSIONER
1
UPPER COVER
. 2
LOWER COVER _ _
-4o-I
9
ENGINE
SUPPORT
BRACKET
8
CAMSHAFT
SPROCKET
6
CRANKSHAFT
PULLEY
10
BELT REAR COVER
TIMING BELT
NUMBERS INDICATE THE
ORDER OF DISASSEMBLY
4
TENSIONER
SPRING
TIMING BELT REMOVAL
Using pliers, grip the tensioner spring projection and remove
it from the oil pump case stopper. ll1en, remove the tensioner
spring and the timing belt tensioner.
NOTE:
If
the timing belt is to be reused, chalk an arrow on the
belt to indicate the direction of rotation before removing it.
This will ensure the timing belt is fitted correctly when
reused.
~ ~
)
U}
TIMING BELT
0
0
TENSIONER_
TENSIONER
\f7"'i"P-~ioU'/
SPRING
REMOVING
THE TIMING .~
BELT
. SPROCKET BOLT REMOVAL (CAMSHAFT)
Using the special tools shown in the illustration, lock the
camshaft sprocket in position and then loosen the camshaft
sprocket bolt.
Engines & Generators
24