26
Maintenance
Hub Inspection Removal-
Replacement And Adjustments
A. Removal of Hub
1.
Remove wheel
2.
Remove grease cap
3.
Remove cotter pin or bend tang washer on Posi-
Lube
4.
Unscrew the spindle nut counter clockwise
5.
Remove spindle washer
6.
Remove hub from spindle
B. Seal Inspection and Replacement
1.
Seals should be replaced each time the hub is
removed.
2.
Pry the seal out of the hub with a screwdriver.
3.
Tap new seal into place.
C. Bearing Maintenance, Adjustments, and
Replacement
1.
Inspect for corrosion and wear.
2.
If any rust or wear exists on the bearing then
remove and replace.
3.
If bearings are found to be in good condition, then
cleaning and repacking the grease is all that is
needed.
NOTE: Do not spin bearings with compressed air.
4.
Hand pack each bearing individually using a
premium lithium base wheel bearing grease.
5.
Reinstall the hub, reversing the procedure above
using the bearing adjustment procedures below.
6.
If you have the Posi–Lube system refer to the
“Posi-Lube Lubrication Procedure”.
D. Bearing Adjustment
Feel and Drag Method
Tighten slotted nut until hub drags slightly whe rotated.
(Rotating the hub while tightening the nut seats the
bearing.) Loosen the slotted nut 1/6 turn (1 hex) to align
nut slot with the cotter pin hole. Wheel should turn
freely. Insert new cotter pin through nut and spindle. If
necessary loosen, never tighten, nut to align slot with
the hole in the spindle. Bend one leg of cotter pin over
the end of the spindle and the other leg over the nut.
Tap legs slightly to set. Cotter pin must be tight. If
equipped with Posi-Lube, bend tang back into position.
Shark SMT Operator’s Manual 9.800-504.0 - E
