Komatsu PC210-10 DEMOLITION BASE SPEC., Operation & Maintenance Manual

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MAINTENANCE MAINTENANCE SCHEDULE TABLE
4–29
ADJUST BUCKET CLEARANCE
ADJUST BUCKET CLEARANCE:PC-LBK0-27DK00A
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WARNING
It is dangerous if the work equipment moves by mistake
when the bucket clearance is being adjusted.Set the work
equipment in a stable condition, then stop the engine and
set the lock lever securely to the LOCK position (L).
1. Set the work equipment in the position shown in the figure
on the right, then stop the engine and set the lock lever to
the LOCK position (L).
2. Shift O-ring (1) and measure the amount of play "a".
Measurement is easier if you move the bucket to one side so
that all the play can be measured at one place (the right side
in the figure).
Use a clearance gauge for easy and accurate measurement.
3. Loosen four plate mounting bolts (2), and loosen plate (3).
The shim is a split type, so the work can be carried out
without removing the bolts.
4. Remove shim (4) 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 (4), 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 four bolts (2).
If bolts (2) are too stiff to tighten, pull out pin stopper bolt (5)
for easier tightening.
(6) Arm
(7) Bucket