Defect summary
THE STEERING GEARBOX MOUNTING FASTENERS WERE NOT PROPERLY HEAT TREATED.
Consequence
THE FASTENER WASHERS CAN CRACK, ULTIMATELY RESULTING IN GEARBOX MOUNTING ASSEMBLY FAILURE AND LOSS OF STEERING CONTROL.
Remedy
DEALERS WILL REPLACE THE SUSPECT WASHERS WITH NEW, IMPROVED WASHERS.
Notes
SYSTEM: STEERING; GEAR BOX.VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 TRUCKS. NOTE: IF THE VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLE TIME OR THE REMEDY DOES NOT CORRECT THE DEFECT, PLEASE CONTACT MACK AT 1-800-439-3011. ALSO, CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.
Source: NHTSA ODI recalls file, campaign 94V206000. Text as published by NHTSA.