Assuming a major air leak in tractor-trailer combination that will result in complete system air pressure loss,which of the following sequence of events will occur FIRST?
A) trailer supply button pops out
B) tractor protection valve trips to OFF
C) spring brakes start to apply when hold-off air drops below 60 psi (4 bar)
D) tractor inversion valve actuates
Correct Answer:
Verified
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