Westerbeke 6.5KW - Page 52

4. Measure the extent of uneven
wear on the journals at four
locations (direction A and B,
front and back). Replace if
limit is exceeded.
Uneven wear limit: 0.05 mm
(0.020 in)
Diameter of journal
(standard):
Front and rear:
41.949 - 41.965 mm
(1.65l~ - 1.6522 in)
Center: 41.919 - 41.935 mm (1.6504 - 1.651 in)
Checking Flywheel and Ring Gear
2
A
~B
1. Check the flywheel for damage or wear on ring gear tooth surface
and replace, if necessary.
2. Replace the ring gear by the following procedure:
a. Heat the ring with a torch.
b. Remove the ring gear by striking its circumference.
c. Heat the new ring gear to 250 - 300·C (480 - 570·F) on a hot
plate or in an oven. Before slipping it onto the flywheel,
make sure that the chamfered side of the ring gear is
directed toward the engine.
NOTE: Excessive heat may destroy original heat treatment and
cause premature failure of the ring gear.
Checking Chain, Chain Adjuster Blade, Damper and Sprocket
1. Check for wear or damage and replace any faulty parts.
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