Challenger Techstar CVT MT525B Series, Operators Instruction Book

Page: 213 / 248

7 . ACCESSORIES AND OPTIONS
7.75 Challenger MT500B EU
7
To return to the window (Fig. 175), press the key
«
5
when
the window (Fig. 177) is open and the icon (22 Fig. 177) is
green or in reverse video on b/w screens.
7.13.2.9 - Working operation
Furrow start:
When the tractor is at the start of a furrow, activate the rear
linkage lowering control as soon as the tractor front imple-
ment reaches mark Y (26 Fig. 178). The front implement
lowers to below the set working depth because the tractor
front is ballasted (front linkage extra-lowering). When dis-
tance X has been travelled, the rear linkage lowers auto-
matically (27 Fig. 178). The back of the tractor is now
ballasted. Thus the front linkage raises slightly to working
position (28 Fig. 178).
Furrow end:
At the end of a furrow, activate the rear linkage lifting con-
trol when the front implement reaches mark Y (29 Fig.
178). The front implement lifts. When distance X has been
travelled, the rear linkage is automatically activated to lift
the implement.
NOTE: For pointed fields, however, the POINTS menu
must be used to optimise the operation of the DUAL
CONTROL (see paragraph 7.8.5).
IMPORTANT: If the linkage high and low stops are mod-
ified during work, they are not stored in the
DATATRONIC active memory. To memorise them, see
paragraph 7.8.2.2.
A
B
1000
2000
790
5.3 10% M
5%
540
2
2000
5 % 73 %
1
ON
Z3A-1314-11-04-B
Fig. 177
GEARBOX SETTINGS
ACTIVE MEMORY
HEADLAND
POINTS
EHS VALVES 5-6
EHS VALVES 1-4
FRONT DUAL CTRL
RPM
KPH
25
22
24
Y
X
Z3A-946-08-04-B
Fig. 178
26
27
28
LEGEND:
26. Lowering the front linkage below working position
27. Lowering the rear linkage into working position
28. Lifting the front linkage into working position
29. Lifting of the front linkage
29