Komatsu PC290LC-6K Operation & Maintenance Manual page 189

24.2.8 ADJUST BUCKET CLEARANCE
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.
• When knocking the pin in with a hammer, metal particles may
fly and cause serious injury, particulary if they get into your
eyes. When carrying out this operation, always wear goggles,
helmet, gloves, and other protective equipment.
• When the bucket is removed, place it in a stable condition.
1. Set the work equipment to the position shown in the diagram at right,
stop the engine and set the safety lock lever to the lock position.
2. Measure the amount of play
Measurement is easier of you move the bucket to one side or the
other so all the play can be measured in one place.
(In the diagram this is on the left-hand side)
Use a gap (clearance) gauge for easy and accurate measurement.
REMARK
When removing the pins, place the bucket so that it is in light contact
with the ground.
If the bucket is lowered strongly to the ground, the resistance will be
increased and it will be difficult to remove the pins.
3. Remove the stopper bolt
4. Fit shims according tot the amount of free play
above
(EXAMPLE)
If the play is 3 mm, fit two 1.0 mm shims and one 0,5 mm shim and
the play will becom 0,5 mm.
When the play
maintenance.
5. Refit pin and stopper bolt.
WARNING
WARNING
.
and nut and remove the pin half way.
is smaller than 0,5 mm. Do not carry out any
24. SERVICE PROCEDURE
A
measured
3-43