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."
Consequence & remedy
Consequence: AIR BRAKE RELEASE TIME MAY BE LONGER THAN ANTICIPATED BY THE OPERATOR INCREASING THE RISK OF A VEHICLE CRASH.
Remedy: DEALERS WILL INSTALL AN IN-LINE QUICK RELEASE VALVE IN EACH OF THE DROP LINES TO THE REAR MOST BRAKE CHAMBERS.
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.
Consequence & remedy
Consequence: IF THE STEERING SHAFT FAILS, STEERING CONTROL WILL BE LOST INCREASING THE RISK OF A VEHICLE CRASH.
Remedy: DEALERS WILL REPLACE THE FIREWALL ADAPTER PLATE ON THE AFFECTED VEHICLES.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
RQ98004 · Steering Columns
Opened Mar 18, 1998 · Closed Oct 7, 1998
Status: closed (inferred from source dates) · Steering:gear Box (other Than Rack And Pinion)
THESE VEHICLES WERE EQUIPPED WITH A FIREWALL ADAPTER PLATE FOR THE STEERING SHAFT BOOT WITH AN INSUFFICIENT CLEARANCE BETWEEN THE STEERING SHAFT AND THE TOP OPENING IN THE ADAPTER PLATE.
1997 Western Star Constellation Problems, Complaints & Recalls | Skip That Year