Front Wheel Hub And Bearing Components (2Wd Models)-Exploded View - Jeep cherokee 1989 Owner's Manual

1-30
38.6 Dislodge the dust cap by working around the outer
edge with a screwdriver or hammer and chisel
and chisel (see illustration).
7
Straighten the bent ends of the cotter pin, then pull the cotter pin
out of the nut retainer (see illustration). Discard the cotter pin and use
a new one during reassembly.
8 Remove the nut retainer, adjustment nut and thrust washer from
the end of the spindle (see illustration).
9
Pull the rotorlhub assembly out slightly, then push i t back into its
original position. This should force the outer bearing off the spindle
enough so it can be removed.
10 Pull the rotorlhub assembly off the spindle.
1 1 Use a screwdriver to pry the grease seal out of the rear of the hub
(see illustration). As this is done, note how the seal is installed.
12 Remove the inner wheel bearing from the hub.
13 Use solvent to remove all traces of the old grease from the bear-
ings, hub and spindle. A small brush may prove helpful; however make
sure no bristles from the brush embed themselves inside the bearing
rollers. Allow the parts to air dry.
14 Carefully inspect the bearings for cracks, heat discoloration, worn
rollers, etc. Check the bearing races inside the hub for wear and
damage. If the bearing races are defective, the rotorlhub assemblies
should be taken to a machine shop with the facilities to remove the
old races and press new ones in. Note that the bearings and races come
as matched sets and old bearings should never be installed on new
38.8
The Motor Manual Guy
Chapter 1
Tune-up and routine maintenance
Front wheel hub and bearing components (2WD models)
Remove the cotter pin and discard
38.7
one when the hub is reinstalled
races.
15 Use high-temperature front wheel bearing grease to pack the bear-
ings. Work the grease completely into the bearings, forcing it between
the rollers, cone and cage from the back side (see illustration).
1 6 Apply a thin coat of grease t o the spindle at the outer bearing seat,
inner bearing seat, shoulder and seal seat.
17 Put a small quantity of grease inboard of each bearing race inside
the hub. Using your finger, form a dam at these points to provide extra
grease availability and to keep thinned grease from flowing out of the
bearing.
18 Place the grease-packed inner bearing into the rear of the hub and
put a little more grease outboard of the bearing.
1 9 Place a new seal over the inner bearing and tap the seal evenly
into place with a hammer and block of wood until it's flush with the hub.
2 0 Carefully place the rotorlhub assembly onto the spindle and push
the grease-packed outer bearing into position.
21 Install the thrust washer and adjustment nut. Tighten the nut only
slightly (no more than 12 ft-lbs of torque).
2 2 Spin the hub in a forward direction to seat the bearings and remove
any grease or burrs which could cause excessive bearing play later.
2 3 Check to see that the tiahtness of the adiustment nut is still aD-
proximately 12 ft-lbs.
2 4 Loosen the adjustment nut until it's just loose, no more.
THRUST
WASHER
NUT
BEARING
exploded view
-
use a new
it
NUT
RETAINER
DUST
PIN CAP