Westerbeke 6.5KW Technical Manual page 50

Main Journal Crankpin
Standard 49.938 - 49.956
mm
39.940 - 39.956
mm
(1.9661-1.9668 in)
(1.5724-1.5734 in)
Undersize 0.254 49.690 - 49.705
mm
39.690 - 39.706
mm
(1.9528-1.9534 in) . (1.5598-1.5604 in)
Undersize 0.508
49.440 - 49.455
mm
39.440 - 39.456
mm
(1.9430-1.9436 in)' (1.5500-1.5506 in)
Undersize 0.762 49.190 - 49.205
mm
39.190 - 39.206
mm
(1.9332-1.9338 in) (1.5402-1.5408 in)
NOTE: When grinding the crankshaft, take care of the following
points.
a. When grinding the crank-
shaft, finish the place of
uR" as shown in the figure.
b. The crankshaft processing
diameters are as shown in
the table above.
4. Check the crankshaft alignment.
If it exceeds the limit, replace
with a new one.
Maximum allowable run-out:
0.05
mm
(0.0020 in)
5. Check the crankshaft end play
wi th a dial indicator as shown
in the figure. If it exceeds
the limit, replace the thrust
bearing with an oversized thrust
bearing.
End play limit: 0.30
mm
(0.0118 in)
NOTE: Any crankshaft grinding
should be done by a qualified
machine shop.
44
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