Westerbeke 65A-FOUR - Page 63

SERVICING SPECIFICATIONS
Item Factory Specification
Allowable Limit
Piston Ring Gap
Compression Ring
0.30 to 0.45 mm 1.25 mm
1
0.0118
to 0.0177 in. 0.0492 in.
Compression Ring 0.30 to 0.45 mm 1.25 mm
2 0.0118 to 0.0177 in.
0.0492
in.
Oil Ring
0.25 to 0.45 mm 1.25
mm
0.0098 to 0.0177 in. 0.0492 in.
Connecting Rod
Alignment
0.05
mm
-
0.0020 in.
Piston Pin to Small End Bushing
Clearance 0.020 to 0.040 mm 0.15 mm
0.0008 to 0.0016 in. 0.0059 in.
Piston Pin 30.006 to 30.011 mm
-
(0.0.)
1.1813t01.1815in.
Small End Bushing
30.031 to 30.046 mm
-
(1.0.)
1.1823 to 1.1829 in.
-
Crankshaft
Side Ciearance
0.15toO.31 mm 0.50 mm
0.0059 to 0.0122 in. 0.0197 in.
Alignment 0.02 mm
-
0.00079 in.
Crankshaft
Journal
0.0
74.977 to 74.990 mm
-
2.9518 to 2.9524 in.
Crankshaft Journal to Crankshaft Bearing
Oil Clearance
0.018
to 0.062 mm
0.20 mm
0.0007 to 0.0024 in.
0.0079
in.
Crank Pin
0.0.
52.977 to 52.990 mm
-
2.0857 to 2.0862 in.
Crank Pin to Pin Bearing
Oil Clearance
0.018
to 0.051 mm
0.20 mm
0.0007 to 0.0020 in.
0.0079 in.
Cylinder Bore
1.0.
98.000 to 98.022 mm
98.15
mm
3.8582 to 3.8591 in. 3.8642 in.
Cylinder Bore
1.0. 98.500 to 98.522 mm 98.65 mm
(Oversize)
3.8780 to 3.8788 in.
3.8839
in.
~ WESTERBEKE
Engines & Generators
57