SERVICE BRAKES, AIR
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. THERE IS INTERFERENCE BETWEEN THE AIR BRAKE S-CAM AND THE END OF ONE OF THE KNUCKLE STUDS. AS THE BRAKE SHOE LINING WEARS, THE S-CAM ROTATION MAY BE LIMITED BY THE INTERFERING KNUCKLE STUD. IF THE S-CAM CAN NOT ROTATE THROUGH ITS FULL RANGE OF MOTION, THE BRAKING FORCE CAN NOT BE FULLY TRANSMITTED FROM THE BRAKE SHOE LININGS TO THE BRAKE DRUMS.
Remedy: DEALERS WILL SHORTEN THE INTERFERING KNUCKLE STUD TO ELIMINATE THE CLEARANCE PROBLEM.
944 vehicles affected
STEERING:LINKAGES:ROD:RELAY:CONNECTING
SCHOOL, TRANSIT, OR HEAVY DUTY VEHICLES EQUIPPED WITH SPICER 6,000 OR 8,000 LB. FRONT STEER AXLES. THE TIE ROD END CAN PULL OUTBOARD AND SEPARATE FROM THE TIE ROD TUBE DUE TO IMPROPER THREAD ENGAGEMENT BETWEEN THE MALE TIE ROD END AND THE FEMALE TUBE.
Remedy: DEALERS WILL REPLACE THE COMPLETE TIE ROD ASSEMBLY.
40,091 vehicles affected