NHTSA recall 91V080000
Steering › Hydraulic power assist system
Mack CF
Reported May 23, 199135 vehicles affectedMACK TRUCKS, INCORPORATEDBuilt Mar 1, 1988 – Jun 1, 1989
The defect
Incorrect manufacture of the hydroboost cylinder allows the ball socket clamp to contact right side steering lever on an extreme left turn and cause flexing of the cylinder rod .
The risk
This flexing can cause seal failure or cylinder failureof the hydroboost unit and result in loss of steering control and result in avehicle accident.
The remedy
Replace incorrectly built boost cylinders.