Download Westerbeke 20B TWO/30B THREE Technical data

Specified Value/Standard
Repair Limit
Connecting Rod
Forged I-beam
Type
Within 0.002
(0.05 mm)
Bend and twist
0.004 - 0.014
(0.1 - 0.35 mm)
Big end thrust clearance
Connecting Rod Bearing
Aluminum metal with back metal
Type
Oil clearance
0.006 (Service limit)
(0.15 mm)
0.01,0.02
(0.25, 0.50 mm)
Undersize
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
(43 mm)
-0.006
(-0.15 mm)
Pin 0.0.
1.575
(40 mm)
-0.006
(-0.15 mm)
Under size finishing
Journal U.S.
0.25
Pin U.S.
1.6817 - 1.6823
(42.715 - 42.730 mm)
0.50
1.6719 - 1.6724
(42.465 - 42.480 mm)
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