Westerbeke W-46 - Crankcase Inspection; Crankshaft Inspection

. INSPECTION/REPAIR
6. Check the bearings as follows:
a. Inspect each bearing for- evidence of wiping or fatigue failure,
scratches by imbedded dirt particles and improper seating on
the bore. Determine by inspection whether the bearing should
be repaired or replaced.
b. Check the radial clearance between crankpin and bearing; if
the repair limit specified below is exceeded by the checked
clearance, replace the bearing. Where the crankpin is to be
ground to the next undersize, use a replacement bearing of that
undersize.
The two bearing undersizes are Q.25mm (0.00984in.) and o.somm
(0. 01969in.) •
Specifications
Unit: mm (in.)
Item
Standard
Repair
limit
58-0.035
Crankpin diameter
-0.055
0.20
(2 283 -0.00138)
(0.008)
. -0.00217
Radial clearance
0.035-0.100
0.200
between bearing
(0.00138- 0.00394)
(0.00787)
and crankpin
D= Dl + 02
2
Positions for measuring connecting rod
bearing with a micrometer
25