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General Information and Operating Instructions
PUSHBACK TRACTOR CHALLENGER550
Jan 28/19
Engaging the parking brake
Figure 23: Parking brake
(1) The CHALLENGER550 is braked.
(2) Press the brake pedal.
The CHALLENGER550 comes to a full stop.
(3) Hold brake pedal down.
(4) Set the gear selector of the CHALLENGER550 to N - Neutral.
(5) Pull the parking brake lever 1 backwards until it can be felt to snap in.
Parking brake is engaged.
(6) Release the brake pedal.
Towing/recovering the CHALLENGER550
Refer to the documentation entitled "Emergency Operating Measures" (Chapter 2) for towing and
emergency operation.
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Property of American Airlines
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