Komatsu PW160-7H, Operation & Maintenance Manual

Page: 264 / 346

SERVICE PROCEDURE MAINTENANCE
264 PW160-7H VEAM390100
ADJUST BUCKET CLEARANCE
WARNING
●
It is dangerous if the work equipment moves by mistake
when the clearance is being adjusted.
● Set the work equipment in a stable position, then stop
the engine and raise the safety lock lever to the LOCK
position.
● In certain conditions it may be possible for the safety
lock lever to contact the left hand arm rest on the opera-
tor seat.
to avoid this, always ensure that the left hand arm rest is
stowed in the fully up position before operating the
safety lock lever.
1. Set the work equipment to the position shown in the diagram
at right, stop the engine and raise the safety lock lever to the
LOCK position.
2. Shift O-ring (1) of the linkage and measure the amount of play
"a".
Measurement is easier if 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 measure-
ment.
3. Loosen the four plate fixing bolts (2) and loosen plate (3).
Because it uses split shims, you can carry out the operation
without removing the bolts entirely.
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 the four bolts (2).
If the bolts (2) are too stiff to tighten, pull out pin stopper bolt
(5) for easier tightening.
LOCK
UNLOCK
Arm
Bucket