ON CERTAIN TRUCKS, EQUIPPED WITH A FULL AIR BRAKE SYSTEM, THERE MAY BE 3 POSSIBLE DEFECTS RELATED TO THE PARKING BRAKE CHAMBER PORTION OF THE AIR BRAKE CHAMBER ASSEMBLY. THEY ARE AS FOLLOWS: (1) DUE TO IMPROPER INSTALLATION OF THE PARKING BRAKE CHAMBER END CAP DURING ASSEMBLY, WATER MAY ENTER THE PARKING BRAKE…
CONTINUED OPERATION IN THIS CONDITION COULD CAUSE CORROSION OF THE POWER SPRING IN THE PARKING BRAKE CHAMBER, LEADING TO POSSIBLE SPRING FAILURE. IN THE WORST CASE, RESULTANT DAMAGE COULD CAUSE THE PARKING BRAKE TO ENGAGE WHILE THE PARKING BRAKE LEVER IS IN THE RELEASED (OFF) POSITION AND THE VEHICLE COULD CRASH…
DEALERS WILL FOR ITEM (1) ABOVE, INSPECT THE PARKING BRAKE CHAMBER. THE END CAP WILL BE REPLACED WITH A MODIFIED PART. IF CORROSION IS FOUND INSIDE OF THE CHAMBER, OR ON THE POWER SPRING, THE PARKING BRAKE CHAMBER WILL BE REPLACED. FOR ITEMS 2 AND 3, THE DEALER WILL CHECK THE MANUFACTURER IDENTIFICATION MARK ON…