Challenger Techstar CVT MT525B Series, Operators Instruction Book

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3 . INSTRUMENTS AND CONTROLS
3.14 Challenger MT500B EU
3.8.2 - Operation:
WARNING: Never adjust seat when tractor is
moving.
1.Weight adjustment:
Automatic pneumatic seat
The seat is adjusted for the driver's weight by briefly
pulling the weight and seat height automatic actuator
lever (1) while the driver is sitting on the seat.
Semi-automatic pneumatic seat
The seat should be adjusted for the driver’s weight
with the driver sitting on the seat. The adjustment is
made by pulling out or pushing in the actuator lever (1)
until the green mark is visible in the weight-and-height
indicator (10).
Manual adjustment seat
The seat should be adjusted when the driver is not
seated by turning the actuator lever (or adjustment
thumb wheel) provided for this purpose. The indicator
displays the weight which has been set
NOTE: To prevent damage to the health, the setting for
the driver's weight must be checked and adjusted as
necessary before the vehicle is driven.
2. Height adjustment:
Automatic pneumatic seat
The seat height can be set automatically and continu-
ously.
The seat height can be altered by either pulling out or
pushing in the actuator lever of the automatic weight
and height actuator lever (ref. 2). If the adjustment
reaches the top or bottom endstop, the height is
adjusted automatically in order to guarantee a mini-
mum spring travel.
NOTE: In order to avoid damage, do not operate com-
pressor for more than 1 minute.
Manual adjustment seat
The seat height can be set automatically and is adjusta-
ble in several steps. The seat can be raised as required
until it clicks into position. If the seat is raised higher
than the last notch (end of travel), it returns to its low-
est position.
3. Fore / aft adjustment:
The locking lever must latch into the desired position.
It should not be possible to move the driver seat into
another position when it is locked.
4. Backrest angle adjustment.
5. Swivel adjustment:
Pull the lever until you feel resistance which allows
you to turn the seat 20° to the left and 10° to the right.
Lockable every 10°.
If you pull more strongly to overcome the resistance
the swivel is unlocked and you can turn freely. For
locking push back lever again.
The locking lever must latch audibly into place. The
swivel should be in the central position for driving.
6. Backrest extension.
7. Lumbar support adjustment.
8. Fore/aft isolator:
Under certain driving conditions (for example with a
trailer attached), it is useful to activate the fore / aft iso-
lator. This means that shock impacts in the driving
direction can be better absorbed by the driver seat:
- Position 1 = fore / aft isolator on
- Position 2 = fore / aft isolator off.
9. Armrest angle adjustment:
The armrests can be folded up if required and the
height individually adjusted.
To adjust the armrest height (arrows) the plastic cover
must be removed by pressing together the inner clips
and pulling off the cover at the same time.
The cover is refitted in the same way in reverse order.
Luxury pneumatic seat with automatic adjustment
10. Seat pan angle adjustment:
The angle of the seat pan can be individually adjusted.
Pull on the knob ref. 10 while pressing on or releasing
the pressure on the seat to find a comfortable position.
11. Seat depth adjustment:
The depth of the seat pan can be individually adjusted.
Pull on the knob ref.
11
and move the seat forwards or
backwards to find the desired position.
12. Lumbar support adjustment:
Manual adjustment: turn the handle to the left or right
to move the lumbar support vertically or horizontally.
Electrical adjustment: there are two available adjust-
ments, each of which can be obtained by the switches
(+ or -) ref. 12.
MT-0281103
Fig. 20
v721a
1
2
8