Westerbeke 20B TWO Tehnical Manual page 21

Specified Value/Standard Repair Limit
Connecting Rod
Type Forged I-beam
Bend and twist Within 0.002
(0.05 mm)
Big end thrust clearance 0.004 - 0.014
(0.1 - 0.35 mm)
Connecting Rod Bearing
Type Aluminum metal with back metal
Oil clearance 0.006 (Service limit)
(0.15 mm)
Undersize 0.01,0.02
(0.25, 0.50 mm)
Crankshaft
Type Fully counterbalanced
Bend Within 0.001
(0.03 mm)
End play 0.002 - 0.007
(0.05 - 0.175 mm)
Journal
0.0.
1.693
-0.006
(43 mm) (-0.15 mm)
Pin
0.0.
1.575
-0.006
(40 mm) (-0.15 mm)
Under size finishing
Journal U.S.
0.25 1.6817 - 1.6823
(42.715 - 42.730 mm)
0.50 1.6719 - 1.6724
(42.465 - 42.480 mm)
Pin U.S. 0.25 1.5636 - 1.5642
(39.715 - 39.730 mm)
0.50 1.5537 - 1.5543
(39.465 - 39.480 mm)
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Westerbeke Engines