Problem #6

Air Leak at Exhaust Port of the Trailer Hand Control with Tractor and Trailer Brakes Released

POSSIBLE CAUSES
Tractor Protection Valve
Trailer Components
Trailer Hand Control
Step #1

Pull Trailer Supply. If leak continues, go to Step #2.
If leak stops, go to Step #3.

Step #2

Replace Trailer Hand Control. Bad or dirty Inlet.

Step #3

Disconnect Glad Hands and connect to holder on tractor.
Push Trailer Supply. If Exhaust Port of Trailer Hand Control leaks, replace Hand Control.
If Exhaust Port does not leak, go to Steps #3 through #5 of Problem #1.

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