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November 2008
A-16 CHECK THE EFFICENCY OF THE STEERING
SELECTION SYSTEM
During operation, the alignment of the front and rear
axles of the machine can be subject to variations. This
can depend on an oil blow-by from the steering control
circuit, or on a steering of both axles when front and rear
wheels are not perfectly aligned.
To fix this problem, rather than checking the alignment
visually, follow the procedure below:
1 Move the machine to a solid and level ground.
2 Set the steering selection switch A to "four-wheel
steer" (pos. 2).
3 Rotate the steering up to its stop (either to the right
or to the left).
4 Set the steering selection switch to "two-wheel steer"
(pos. 0).
5 Rotate the steering up to its stop (turn in the same
direction as above).
6 Reset the steering selection switch to "four-wheel
steer" (pos. 2).
7 Rotate the steering (to the side opposite to point 3)
so that the rear axle reaches its stop.
8 Reset the steering selection switch to "two-wheel
steer" (pos. 0).
9 Rotate the steering (to the same side as in point 7)
so that the front axle reaches its stop.
10 Reset the steering selection switch to "four-wheel
steer" (pos. 2).
Now the wheels should be re-aligned.
1
Document 57.0009.0427
0
2
B
GTH-4017EX GTH-4514EX GTH-4013EX
Section 4 - Maintenance Procedures
GTH 4017 EX
GTH 4514 EX
P
A
GTH 4013 EX
If the rear wheel alignment indicator light (OPTIONAL)
is on the machine, the indicator light A comes on when
wheels are aligned (see rear wheels on position B). The
sensor C on the steering cylinder of the rear axle gives
the aligned wheels.
4
A
15
10
20
RPM x 100
5
25
0
30
P
C
TABLE A
19
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