Checking The Connecting Rod Bearings - Westerbeke 9.0 BCG Technical Manual

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Checking the Connecting Rod Bearings
1. Check each connecting rod bearing careful-
Iyand replace it if it is worn, scored or flaked.
2. Check each connecting rod bearing's oil
clearance with a "plastigauge." If the
clearance for these bearings exceed the al-
lowable limit, replace all the connecting rod
bearings. If the connecting rod journals are
scored
or
flaked, grind the crankshaft's con-
necting rod journals and install an undersize
bearing.
Bearing Oil Clearance:
Specified Limit: 0.0008 - 0.0016 inches
(0.020 -0.044 mm)
Allowable Limit: 0.0031 inches (0.08 mm)
Kinds of Connecting Rod Bearings:
Standard Repair
Undersize 0.0098 inches (0.25 mm)
Undersize 0.0196 inches (0.50 mm)
3. Check each connecting rod's thrust
clearance.
Specified Limit: 0.0059 - 0.0098 inches
(0.150 - 0.250 mm)
Allowable Limit; 0.0012 inches (0.03 mm)
4. Check each connecting rod's journal width.
Journal Width: 0.8661 - 0.8681 inches
(22.00 - 22.05 mm)
Westerbeke Generators
1.5739 - 1.5748 inches (39.976 - 40.000 mm)
1.5642 - 1.5646 inches (39.732 - 39.742 mm)
1.5544 - 1.5548 inches (39.482 - 39.492 mm)
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