F 350 4WD Pickup V8-7.3L DSL (1988)
Figure 2
3.
Remove the linkage from the truck, Figure 2.
a.
See if the rubber is torn on the RBS. If the rubber is torn, replace it with a greaseable steel joint.
b.
See if the steel joint will spin freely. If the joint spins freely with the hand, replace the joint.