Westerbeke 65A-FOUR - Idler Gear

SERVICING
Oil Clearance of Camshaft Journal
1. Measure the camshaft journal 0.0. with an outside
micrometer.
2. Measure the cylinder block bore 1.0. for camshaft with an
inside micrometer.
3. If the oil clearance exceeds the allowable limit, replace the
camshaft.
Factory spec.
0.050 to 0.091 mm
Oil clearance of
0.00t97 to 0.00358 in.
camshaft journal
0.15 mm
Allowable limit
0.0059 in.
Camshaft journal 0.0. Factory spec.
45.934 to 45.950 mm
1.8084 to 1.8091 in.
Camshaft bearing I.D. Factory spec.
46.000 to 46.025 mm
1.81
I 0 to 1.8120 in.
Oil Clearance between Idle Gear Shaft 1, 2 and Idle Gear 1, 2
Bushing
1. Measure the idle gear shaft 0.0. with an outside micrometer.
2. Measure the idle gear bushing 1.0. with an inside micrometer,
and calculate the oil clearance.
3. If the. oil clearance exceeds the allowable limit, replace the
bushing.
Clearance between idle
Factory spec.
gear 1, 2 shaft and idle
gear 1, 2 bushing
Allowable limit
Idle gear 1, 2 bushing
Factory spec.
1.0.
Idle gear " 2 shaft D.D.
Factory spec.
Replacing Idle Gear Bushing
(When removing)
0.050 to 0.091 mm
0.0020 to 0.0036 in.
0.10 mm
0.0039 in.
45.025 to 45.050 mm
1.7726 to 1.7736 in.
44.959 to 44.975 mm
1.7700 to 1.7707 in.
1. Using an idle gear bushing replacing tool, press out the used
bushing.
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Using an idle gear bushing replacing tool, press in a new
bushing (service parts) to the specified dimension.
~ WESTERBEKE
Engines & Genera/ors
46
MEASURING THE CYLINDER BORE 1.0.
o
o
o
REMOVING
•
• INSTALLING
REPLACING THE IDLER GEAR BUSHING