Westerbeke 4.5 BCGB - 60HZ Operator's Manual page 38

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.
Crankshaft Bolt Removal
1.
Lock the crankshaft in position.
NOTE:
Do not tum the crankshaft.
2. Remove the crankshaft bolt.
Timing Belt Inspection
Replace the belt if any of the following conditions exist:
1.
Hardening of back rubber-back side is glossy, without
resilience, and leaves no indent when pressed with firt-
gemail.
2. Cracks on rubber back.
3. Cracks or peeling of canvas.
4. Cracks on tooth bottom.
5.
Cracks on belt.
6. Abnormal wear of belt sides. The sides are normal if
they are sharp as if cut by a knife.
7. Abnormal wear on teeth.
8. Tooth missing and canvas fiber exposed.
CRACKS OR
PEELING ·
RUBBER
5.
EXPOSED
,__-~!Do.........,
7.
Tensioner Inspection
6.
8.
ABNORMAL WEAR
(FLUFFY STRAND)
TOOTH MISSING
AND CANVAS
ER EXPOSED
1. Replace the tensioner if the pulley binds, rattles or is noisy
when turned.
Flange Installation
1. Mount the flange so that its side shown by the heavy
arrow in the illustration faces toward the sprocket.
FLANGE
d)NASHER
-~-®Q
Crankshaft Bolt Installation
1.
Lock the crankshaft.
NOTE:
Do not tum the crankshaft.
2. Tighten the crankshaft bolt to the specified torque.
Oil Pump Sprocket Flange Nut Installation
1.
Insert a round bar into the plug hole in the left side of
the cylinder block to keep the counterbalance shaft from
turning.
2. Install the oil pump sprocket.
3. Tighten the nut to the specified torque.
36 - 41 fl-lb (50 - 57 Nm)
~
NUT
'OIL PUMP
. SPROCKET
Camshaft Sprocket Bolt Installation
1. Tighten the bolt to the specified torque.
Bolt Torque: 58-72ft- lbs (80 -100 Nm)
BOLT
Engines & Generators
,30