Engine Adjustments - Westerbeke 6.5 SBCG-60HZ Operator's Manual

ENGINE ADJUSTMENTS
NOTE: WESTERBEKE recommends that the following engine
adjustments be performed by a competent engine mechanic.
The information below is provided to assist the mechanic.
TIMING BELT INSPECTION AND REPLACEMENT
nmlng Belt Removal
A
CAUTION:
Water Dl o/11111 the timing belt severely ·
retlut:eS tile serriaiW. of tile belt. Keep the tl111ing
belt sp111t:ket and tensi1111« tree of oil and grease.
Thesll
pads
sllDuld never be cleaned. Replat:e if sed·
IIIISiy
Cllllfalllinated with dirt
Dt
oil. H oil
is
erident on
these
palls,
t:het:k lbe front
case,
oil PIIIIIP oil seals,
and t:aiiiShaft oil seals for
a
possible oil leak.
1. Tum the crankshaft clockwise to align· the timing mark on
the camshaft sprocket and timing belt rear cover.
NOTE: always tum
the
crankshaft clockwise.
TIMING
MARK
2.
Remove the plug on the left surface of the cylinder block
and insert a rod with a diameter of 8mm (0.3iin.) to lock
the counterbalance shaft.
NOTE: Be sure to use an inserting rod with a diameter pf
8mm (0.31
in.).
2.6 IN (65MM)
ROD
•~-
CYLINDER
BLOCK
3. Loosen the timing belt tensioner nut.
4. Move the timing belt tensioner toward the water pump,
and temporarily tighten the nut to hold the tensioner in
that position.
TIMING BELT TENSIONER
PUMP
5. Remove the timing belt.
NOTE:
If
the timing belt is to be reused, draw an arrow on
the belt back to indicate the direction of rotation (clock-
wise).
Camshaft Sprocket Removal
1. Remove the bolt without turning the camshaft.
Oil Pump Sprocket Flange Nut Removal.
1. Remove the plug from the left side of the cylinder block.
2.
Insert an 8 mm (0.31 in.) diameter round bar to lock the
counterbalance shaft.
3. Remove the nut.
l"fN'lWESTEIIBEKE
l
Engines & Generators
20