7 . ACCESSORIES AND OPTIONS
7.18
Challenger MT500B EU
7.5 - FRONT DUAL CONTROL
7.5.1 - General
The “Front Dual Control” is identical to the “Rear Dual Con-
trol”, controlling the front implement (e.g.: plough, cultiva-
tor, roller) at soil entry and exit, and automatically transmits
position and applied draft changes to the rear implement in
order to obtain simultaneous horizontal movement.
The information necessary for operation of the system is
transmitted to the “DATA 2” onboard computer via the
sensors and the electronic linkage calculator.
This system is currently available on tractors fitted with
"LOAD SENSING" hydraulics.
NOTE: Tractors fitted with ‘Front Dual Control’ are auto-
matically fitted with “Rear Dual Control”, however the
two systems cannot be used together.
7.5.2 - Description of the adjustment screen
(See section 7.4)
Fig. 20: Press key 2 or 3, the drop-down menu appears. Se-
lect -FRONT ADJ- in -DUAL-. Four new symbols are dis-
played (Fig. 21):
• Ref. A to H: this information is used to set the height
and depth of the front and rear implements
• Ref. I to P: this information is used to operate the sys-
tem at automatic furrow starts and ends.
To select one of the display windows, use keys 6-1 and 6-2.
A B: Front linkage position high.
C D: Rear linkage position high.
E F: Front linkage position low.
G H: Rear linkage position low.
I J: Front-to-rear implement length in ‘FURROW START”
phase.
M N: Front-to-rear implement length in ‘FURROW END’
phase.
Fig. 20
V 923
2
14
3
UNITS
---JOYSTICK---
MAX FLOW
KICK OUT
TRAIL IMPL
TRAIL ADJ
-----DUAL-----
REAR ADJ
REAR CTRL
FRONT ADJ
FRONT CTRL
Fig. 21
V 918
10
12
6
A
B
E
F
I
J
M
N
C
D
G
H
V 976
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