SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH
VEHICLE DESCRIPTION: HEAVY DUTY 6X4 TRUCKS EQUIPPED WITH EITHER HENDRICKSON RT/RS SERIES SUSPENSIONS OR CHALMERS 800 SERIES SUSPENSIONS, WITH A WHEEL BASE GREATER THAN 250 INCHES, AND WESTERN STAR'S AIR '96' AIR BRAKE SYSTEM WITHOUT ANTI-LOCK BRAKES. THESE VEHICLES DO NOT MEET THE AIR BRAKE RELEASE TIME REQUIRED BY FMVSS NO. 121, "AIR BRAKE SYSTEMS."
Remedy: DEALERS WILL INSTALL AN IN-LINE QUICK RELEASE VALVE IN EACH OF THE DROP LINES TO THE REAR MOST BRAKE CHAMBERS.
40 vehicles affected
STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
VEHICLE DESCRIPTION: CONVENTIONAL TRUCKS AND TRUCK/TRACTORS EQUIPPED WITH A FIREWALL ADAPTER PLATE FOR THE STEERING SHAFT BOOT. INSUFFICIENT CLEARANCE BETWEEN THE TOP OF THE STEERING SHAFT AND THE TOP OF THE OPENING IN THE ADAPTER PLATE CAN CAUSE THE STEERING SHAFT TO CONTACT THE TOP OF THE FIREWALL ADAPTER OPENING WEARING A GROOVE IN THE STEERING SHAFT. IF THE GROOVE IS ALLOWED TO WEAR DEEP ENOUGH, THE SHAFT CAN FAIL.
Remedy: DEALERS WILL REPLACE THE FIREWALL ADAPTER PLATE ON THE AFFECTED VEHICLES.
14 vehicles affected