VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH 10,000 OR 12,000 POUND DANA FRONT AXLES. A CONDITION CALLED BRAKE "SPRAG", WHICH IS CHARACTERIZED BY A NOISE AT THE END OF AN APPLIED STOP,…
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. THE AIR HOSES FROM THE RELAY VALVES WERE CONNECTED DIRECTLY TO THE SERVICE BRAKE CHAMBERS, RATHER THAN BETING CONNECTED THROUGH THE ANTI-LOCK BRAKING SYSTEM (ABS) MODULATOR. THIS…