Komatsu PC128UU-2 Operation & Maintenance Manual page 180

Hydraulic excavator
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OPERATION
When the work equipment angle sensor has been
removed and installed again, the automatic stop position
will change.
When the cutting edge of the bucket is lowered to the
ground surface, the depth display does not become 0.0
m (0.0 in).
The depth display changes according to the position of
the bucket.
The boom stops before the point set for the depth mode.
(This happens particularly when the boom is lowered
slowly.)
In cold weather, the stop position changes when the
interference prevention device and automatic control
device are actuated. (This returns to normal when the
hydraulic oil is warmed up.)
TROUBLESHOOTING
3-123

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