Cherokee 4WD L6-4.0L VIN S (1998)
Steering Gear: Description and Operation
The power steering gear is a recirculating ball type gear. The gear acts as a rolling thread between the worm shaft and rack piston. The worm shaft is
supported by a thrust bearing at the lower end and a bearing assembly at the upper end. When the worm shaft is turned the rack piston moves. The rack
piston teeth mesh with the pitman shaft. Turning the worm shaft turns the pitman shaft, which turns the steering linkage.
CAUTION: Components attached with a nut and cotter pin must be torqued to specification. Then if the slot in the nut does not line up with the cotter
pin hole, tighten nut until it is aligned. Never loosen the nut to align the cotter pin hole.