Komatsu WB93R-5, Operation & Maintenance Manual

Page: 112 / 284

INSTRUMENTS AND CONTROLS
110
20 - PATTERN CHANGE CONTROL LEVER
(if provided and only for the version with servo-as-
sisted backhoe)
WARNING
q
Before using the pattern change control lever to modify
the machine’s operating pattern, lower the equipment to
the ground and stop the engine.
q
After changing the control operating pattern, carry out
the first manoeuvres slowly and very carefully, in order
to understand the new controls correctly and to avoid
any damage or fatal injury that may be caused by incor-
rect movements.
q
After changing the control operating pattern and before
checking the movements of the machine, make sure that
the area is clear of obstacles and that no one is standing
in the range of movement of the machine.
The pattern change control is positioned on the rear central
part of the cab floor and allows the operator to choose the con-
trol pattern he prefers.
The pattern change control lever (20) has two positions:
q
Pos. 1: ISO PATTERN control system
Lever in position B.
q
Pos. 2: OPTION PATTERN control system
Lever in position C.
The control lever (20) is held in its position by means of a safe-
ty screw (D). When it is necessary to change the control pat-
tern, raise the mat and loosen the safety screw (D) until
releasing the lever (20) completely.
Select the desired control pattern by rotating the lever (20)
horizontally and secure it in its position by means of the safety
screw (D). Put back the mat.
IMPORTANT
q
All movements of the boom and the equipment are in-
hibited when the safety button (A) is in locking position
(LED on) (see "3.3.2 pos. 12 - SERVO CONTROL LOCK-
ING BUTTON").
q
Before moving the machine the operator must make
sure that the control pattern selected with the lever (20)
corresponds perfectly to the control pattern indicated
on the front part of the respective joysticks. If neces-
sary, turn the corresponding plates (E) by 180°.
20
D
B
RKAB4490
20
D
C
RKAB4500
RKAB4450
A
RKA15120
E E
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