CRANKSHAFT, PISTON AND CONNECTING ROD
72
2. Compare the measurements to those that are
listed in the chart at the end of the chapter.
3. Inspect the cylinder cross hatch.
NOTE: The cross hatch is important because it
helps hold oil on the cylinder walls.
NOTE: If the cross hatch is polished off, that is a
sign of dirt ingestion. The cylinder can not be re-
honed because replacement piston rings are not
available. The engine must be short blocked.
Bearings
There are two bearings to inspect; a bearing in the
crank case cover and one in the cylinder block. To
inspect the bearings:
1. Remove the crank case cover and cylinder block
oil seals using a seal puller.
See Figure 10.15.
2. Inspect the bearing surface for galling,
scratches, metal transfer or any other signs of
damage.
3. Measure the inside diameter of the bearings and
compare to the chart at the end of this chapter.
4. If the crankshaft journal is with in specifications,
slide it into the bearing and check for movement
in the bearing that would indicate that the bear
-
ing is worn out.
NOTE: The bearing can not be serviced. If they
are bad the engine must be short blocked.
Figure 10.15
Oil seal
Seal puller
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