Problem #9

Air Leak at the Exhaust Port of the following valves with Service Brakes Applied

POSSIBLE CAUSES
Brake (Foot) Valve Bad or dirty Exhaust Seat.

Relay Bad or dirty Exhaust Seat.

Quick Release Valve Bad or dirty Exhaust Seat.

Ratio Valves Bad or dirty Exhaust Seat.

Trailer Hand Control Valve Bad or dirty Exhaust Seat.

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