Westerbeke W-46 - Page 35

INSPECTION/REPAIR
Tappets and Tappet Holes.
1. Inspect the riding face of each tappet for wear, contact pattern
and cracks. Replace defective tappets.
2. Check the fit of the tappet in the hole and confirm with the
repair limit in the chart indicated below. If the limit is
exceeded, replace the tappet. If the hole is worn, resulting in
an excessive radial clearance, even with a new tappet, the crank-
case must be replaced.
Specifications
Unit: mm (in.l
Item Standard
Repair Service
limit
limit
Fit of holes
O.Q3S- 0.098
+O.lO(hole)
(0.00138-
0.13
on tappets
0.00386)
(0.005 1) (+0.0039)
Tappet hole
22 (0.87)
+0.10
diameter
{+0.0039)
Flywheel and Ring Gear
1. Check the flywheel for cracks and the crankshaft flywheel dowel
pin for proper fit.
2. Check the threads of the flywheel retaining bolts for stretch and
other defects. Replace the bolts as needed.
3. Check the ring gear for broken or excessively worn teeth. If the
teeth are defective, remove the gear from the flywheel and replace
it with a new one.
Timing Gear Case and Oil Seal.
1. Check the timing gear case for signs of cracks and inspect the
condition of the dowel pin holes.
2. Check the oil seal for excessive wear and defects; replace it
when stated conditions are present. Closely inspect the oil seal
when excessive oil leaks from the crankshaft end.
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