Item Affected: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
Date Announced: 12/03/1991
Description of Recall: TRW SUPPLIED POWER STEERING GEARS WITH NON-HEAT-TREATED WORM SCREWS. THE STEERING GEARS WITHOUT HEAT TREATED WORM SCREWS CAN LOCK UP IN TIGHT TURNING MANEUVERS.
Conequence: LOCK UPS OF THE STEERING GEAR CAUSES LOSS OF STEERINGCONTROL AND COULD RESULT IN AN ACCIDENT.
Action Need To Fix It: REPLACE THE NON-HEAT-TREATED WORM SCREWS.
Notes: SYSTEM: STEERING GEARS.VEHICLE DESCRIPTION: KENWORTH TRUCKS EQUIPPED WITH TAS65007 POWER STEERING GEARSAND MANUFACTURED IN SEATTLE AND ST. THERESE.