3.
Use a hammer and drift to knock out lock pin (2).
If the drift is set against rubber pin lock (3) when it is hit,
the rubber pin lock may break. Set it against the back of
the pin.
4.
After removing lock pin (2) and rubber pin lock (3), check
them.
5.
If lock pin (2) and rubber pin lock (3) are used in the condi-
tion below, it will cause tooth (1) to come off during opera-
tion. Check the shape of the parts. If they have any dam-
age, replace them.
• Lock pin (2) is too short.
Dimension (B) is 1/3 or more of dimension (A) when
lock pin (2) is aligned with bottom face (C).
• The steel ball is about to come off.
Rubber (6) of the rubber pin lock is broken.
• The steel ball sinks.
The rubber of the rubber pin lock is deteriorated and
steel ball (7) sinks into it when you press it.
6.
Remove the soil stuck to adapter (4) by using a knife.
7.
Use your hand or a hammer to push rubber pin lock (3) in-
to the hole of adapter (4).
When doing this, be careful that rubber pin lock (3) does
not fly out from the adapter surface.
8.
Clean the inside of teeth (1), then install it to adapter (4).
If there is mud affixed to it or if there are protrusions, the
teeth (1) will not enter adapter (4) properly, and there will
not be proper contact at the mating portion.
9.
Fit tooth (1) to adapter (4), and check that when tooth (1) is pressed strongly, the rear face of the hole for
the pin of teeth (1) is at the same level as the rear face of the hole for the pin of adapter (4).
MAINTENANCE MAINTENANCE PROCEDURE
4-27
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