Komatsu PC400LC-5 Operation & Maintenance Manual page 185

24.
SERVICE PROCEDURE
24.2.8 ADJUST BUCKET CLEARANCE
a
WARNING
It is dangerous if the work equipment moves by mistake when
the clearance is being adjusted.
Set the work equipment in a stable condition, then stop the
engine and lock the lever securely.
Free
AE096630
1.
2.
3.
4.
Set the work equipment to the position shown in the diagram at
right, stop the engine and set the lock lever to the locked
position.
Measure the amount of play "a".
Measurement is easier of you move the bucket to one side or the
other so all the play can be measured in one place.
Use a gap (clearance) gauge for easy and accurate measure-
ment.
Loosen the four bolts, bolt @ and plate 0.
Remove shim @ corresponding to the amount of play "a"
measured above.
[Example]
In the case of play of 3 mm, remove two 1.0 mm shims and one 0.5
mm shim. Play becomes 0.5 mm. For shim 0, two types of 1.0 mm
and 0.5 mm are used.
When play a is smaller than one shim, do not carry out any
maintenance.
5. Tighten the four bolts @ and 0.
Then, clearance "b" becomes large and free play "a" is removed.
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