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Have air pressure in the braking system even when the vehicle is not running.
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Maintain some air pressure in the braking system when the vehicle is not running.
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Must be run to build air pressure to allow the brakes to operate properly.
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Maintain air pressure when shut off for periods of less than four hours.
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38/50.
13.
Vehicles with dual air brake systems:
Answer correctly : 0 | Wrong : 0
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