Bucket Return Mechanism; Bucket Level Indicator - Komatsu WA270-3H Operation & Maintenance Manual

Wheel loader
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BUCKET RETURN MECHANISM

The bucket return mechanism permits to set automatically the required
digging angle of the bucket.
1.
Stop the machine on level
2.
Lower the bucket to the ground.
3.
Position at required digging angle.
4.
Push either the control lever for work hydraulic system or the multi-
functional lever to stop position '0'.
5.
Switch off the engine pull the parking brake.
6.
Place wheel chocks in front and behind the wheels.
7.
Secure the articulated steering with the articulated steering catch.
8.
Loosen both nuts (1) and adjust the holder (2) of the switch (3) in
such a way, that the rear tip of the bracket is in the centre of the
contact area of the switch (3).
9.
Retighten both nuts.
10.
The gap between the contact area of the switch (3) and the bracket
(4) must be 3 to 5 mm.
11.
After the adjustment is finished, the engine can be restarted.
WARNING
Unintentional moving and opening of the bucket may lead to
severe accidents!
Make sure that there is nobody standing next to the bucket,
before lifting and opening the bucket. Sound the horn
immediately before you start to lift the bucket.
12.
Raise the boom.
13.
Open the bucket.
14.
Set either the control lever for the work hydraulic system or the
multifunctional lever to tip-in position 'E', lock it in place, then release
it. Check whether either the control lever or the multifunctional
lever returns automatically to the stop position '0' when the bucket
has reached the required angle. Correct the adjustments, if
necessary.

BUCKET LEVEL INDICATOR

The level indicators on both sides of the bucket run in parallel to the
bucket cutting edge.
The position of the bucket cutting edge can be seen from the driver's
seat with the help of the level indicator.
ground.
Operation
3 2 0 _ 9 0 9
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