Komatsu PC290LC-6K, Operation & Maintenance Manual

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3-42
PC290-ENG
If the rear face of the hole for the pin op point
a
is protruding to the front
from the rear face of the pin hole for adapter
d
, do not try to knock the pin
in. There is something preventing point
a
from entering adapter
d
fully,
so remove the obstruction. When point
a
enters adapter
d
fully, knock in
lock pin
b
.
9. Insert lock pin
b
in the hole of the point and hit it until its top is the
same level as the surface of point.
10. After replacing a bucket tooth, always check the following.
1) After the lock pin has been knocked in, check that it is being
secured by the plug.
2) Lightly hit lock pin 2 in the reverse direction from which it was hit
in.
3) Lightly hit the tip of the point from above and below, and hit its
sides from right and left.
4) Confirm that tip of the plug is located in the recess of the pin.
The life of the point can be lengthened and the frequency of its replace-
ment can be reduced by turning it upside down so that it will wear evenly.
Replace the rubber plug and locking pin with new parts at the same time
as replacing the point to prevent the point from falling off.
24. SERVICE PROCEDURE