Westerbeke 6.5KW - 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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