Westerbeke W-46 - Camshaft Inspection

INSPECTION/REPAIR
The end. play is due to the differ-
ence between the width of thrust
bearing and the dimension (A) indi-
ca ted below:
4. Runout
Support the crankshaft as shown
and rqll it to measure its
deflection with a dial gauge.
Distortion is one-half on the
deflection (dial gauge reading:)
if it exceeds the standard,
reduce it by bending the
crankshaft in a press.
Specifications
Unit: mm (in.)
Item
Standard
Repair
limit
Crankshaft
runout
0.02
0.5
(0.0008)
(0.020)
s. Main Bearing
Inspect each main bearing for
evidence of w1p1ng or fatigue
failure, scratches from im-
bedded dirt particles and
improper seating on the bore
(bearing cap). Upon inspec-
tion, determine whether the
bearing should be replaced or
not.
Check each main bearing that
will be installed during engine
reassembly to determine the
specified radial clearance.
The checking procedure is as
follows:
A
Journal width for thrust bearing
Checking crankshaft for runout
Measuring main bearing ID
Engines & Generators
30