Komatsu Utility 395F6001, Operation & Maintenance Manual

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INSTRUMENTS AND CONTROLS
97
6-1 LEVER
The boom control lever is positioned on the operator’s right
and controls the boom lifting and lowering and the folding
and dumping of the equipment according to the orthogonal
movements listed below.
N - Neutral
A - Boom lowering
B - Equipment dumping
C - Boom lifting
D - Equipment folding
If the lever is operated following an inclined direction with re-
spect to the machine axes, simultaneous movements, pro-
portional to the inclination angle, are obtained, since the two
hydraulic distributors responsible for the single functions are
working at the same time.
N - Neutral
A - Boom lowering – Equipment folding
B - Boom lowering – Equipment dumping
C - Boom lifting – Equipment dumping
D - Boom lifting – Equipment folding
IMPORTANT
• In the TRAVEL–WORK operating mode, independently of the boom extension and in order to increase
the transversal stability of the machine, if the boom inclination exceeds approximately 30° (which can be
checked on the goniometer applied to the left side of the first section of the boom), the movement of the
frame with respect to the axles is automatically locked (if the rear axle lock cylinder is installed).
Normal conditions are automatically restored when the boom inclination is again below 30°.
6-2 BOOM EXTENSION-RETRACTION POTENTIOMETER
This is a roller potentiometer (1) with proportional directional
signals that automatically returns to the center when re-
leased.
When turned towards the front of the machine (A), it controls
the extension of the boom; turned in the opposite direction
(B), it controls the retraction of the boom.
RKA01840
D
A
B
C
N
RKA01850
A
B
C
N
D
RKAA0622
B
A
1
A
B