IN ADDING AN AIR TRACTOR PACKAGE TO THE STANDARD AIR OVER HYDRAULIC BRAKE SYSTEM A MIX OF PIPE FITTINGS WAS MADE WHICH WERE INCOMPATIBLE WITH THE PIPE THREADS ON THE VEHICLES AIR BRAKE SYSTEM.
THIS CONDITION COULD RESULT IN AIR LEAKS IN THE BRAKESYSTEM AND REDUCE THE BRAKING ABILITY.
INSTALL CORRECT FITTINGS AS NECESSARY.