Mechanic Tests - Air Brake Controls

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Page 1 of 11 (0%)
Indicates required field
1) Tractor protection valves:
2) A wig-wag (low air warning device) should operate:
3) An inversion/spring brake modulating valve must be mounted upside down.
4) The Canadian Motor Vehicle Safety Standards (CMVSS) schedule 121 states that parking brakes must hold an empty or loaded vehicle on a:
5) Spring brakes commonly operate the _________________ to keep the vehicle from moving when parked.