Challenger Techstar CVT MT525B Series, Operators Instruction Book

Page: 220 / 248

7 . ACCESSORIES AND OPTIONS
7.82 Challenger MT500B EU
7.13.3.8 - Activating the REAR DUAL CONTROL func-
tion
In order to use the DUAL CONTROL function, it must first
be activated.
• For this, press the key
«
2
when the window (Fig. 197) is
open. The window (Fig. 199) is displayed.
• Press the key
«
6
when the icon (57 Fig. 199) is green (if
this is not the case, first press the key
«
1
so the icon
(57 Fig. 199) is displayed in green. The DUAL CONTROL
function is then active and the symbol (58 Fig. 199)
changes from OFF to ON (59 Fig. 200).
NOTE: On b/w screens, the active window is indicated
by the icon (57
Fig. 199 ) in reverse video.
During use, a symbol is displayed under each linkage to in-
dicate their control position (e.g. 60 Fig. 200).
The following symbols can be displayed:
To return to the window (Fig. 197), press the key
«
5
when
the window (Fig. 200) is open and the icon (57 Fig. 200) is
green.
7.13.3.9 - Working operation
Furrow start (Fig. 201):
When the tractor is at the start of a furrow, activate the rear
linkage lowering control as soon as the first share reaches
mark Y (61). At the same time, the plough depth wheel is
partially lowered (62). As soon as distance X has been cov-
ered, the depth wheel is lowered to its working position
(63).
Linkage control in raised position
Linkage control in lowered position
Indicates if the DUAL CONTROL is in the furrow
start or end mode
Linkage control in floating position
A
B
1000
2000
790
5.3 10% M
5%
540
2
2000
OFF
1
Z3A-1318-11-04-B
Fig. 199
GEARBOX SETTINGS
ACTIVE MEMORY
HEADLAND
POINTS
EHS VALVES 5-6
EHS VALVES 1-4
REAR DUAL CTRL
RPM
KPH
57
58
A
B
1000
2000
790
5.3 10% M
5%
540
2
2000
1
ON
Z3A-1317-11-04-B
Fig. 200
GEARBOX SETTINGS
ACTIVE MEMORY
HEADLAND
POINTS
EHS VALVES
FRONT DUAL CTRL
RPM
KPH
60
57
59
Y
Y
X
Z3A-967-08-04
Fig. 201
64
63
62
61
65
LEGEND:
61. Lowering the linkage into working position
62. Partial depth wheel lowering
63. Plough in working position
64. Partial depth wheel lifting
65. Plough in high horizontal position