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General Information and Operating Instructions
PUSHBACK TRACTOR CHALLENGER550
Jan 28/19
7 Switch
"Front axle suspension
to drive level
adjustment"
Press the button up:
Raise front axle suspension.
(until the "Drive level" indicator in the dis-
play lights up)
Press the button down:
Lower front axle suspension.
(until the "Drive level" indicator in the dis-
play lights up)
8 Button
"Raise/Lower front axle
suspension"
Press the button up:
Raise front axle suspension.
Press the button down:
Lower front axle suspension.
The "Front chassis" level indicator in the
display shows the current height of the
suspension.
9 "Low-beam headlights"
switch
Switch on/off low-beam headlight.
10 Switch
"Diesel pre-heating"
Switch heating at the fuel filter
on/off
11 Switch
"Front-wheel steering"
Select front-wheel steering. The selection
is indicated in the display.
Pos. Pictogram Designation Description
Property of American Airlines
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