Defect summary
THE UNIVERSAL JOINTS AT EACH END OF THE STEERING SHAFT ARE ATTACHED TO THE SHAFT WITH A KEY AND SET SCREW. THE SET SCREWS MAY LOOSEN AND ALLOW THE KEY TO FALL OUT OF PLACE.
Consequence
IF THE KEY FALLS OUT, THE UNIVERSAL JOINT WOULD SPIN ON THE SHAFT, RESULTING IN LOSS OF STEERING AND A POSSIBLE CRASH.
Remedy
MODIFY STEERING LINKAGE TO PREVENT SET SCREW FROM LOOSENING AND KEY FROM COMING OUT OF KEY WAY.
Notes
SYSTEM: STEERING LINKAGE. VEHICLE DESCRIPTIONS: FIRE TRUCK.
Source: NHTSA ODI recalls file, campaign 90V063000. Text as published by NHTSA.