Hub And Drum; Removal; Cleaning - Chevrolet 30 Series 1967 Service Manual

1. A x le Shaft
2. A x le Shaft-to-W heel Hub
Retaining Bolt
3. Adjusting N u t Lock N u t
4. Hub O u ter Bearing Assembly
5. Hub O uter Bearing Retainer
ferential side gear and flange holes index over hub
studs.
. Install tapered dowel over each hub stud. Install and
6
tighten stud nuts to 90 ft. lbs. torque.
7. Observe that clearance exists between face of stud
nuts and axle shaft flange. If no clearance exists,
this indicates excessive wear at studs, tapered dow­
els, or flange holes—replace worn part if necessary.

HUB AND DRUM

(Refer to Figures 57 and 58.)

Removal

1. Remove wheel assembly and axle shaft as specified
in applicable "Axle Shaft Removal" procedure of this
section.
2. Disengage tang of nut lock from slot or flat of lock
nut, then remove lock nut from housing tube, using
appropriate tool (fig. 59):
a. J-2 2 2 2 —5200 and 7200 lb. axles.
b. J-0 8 7 0 —11,000 and 13,500 lb. axle.
c. J-22343-15,000 lb. axle.
M50 Trailing
15.000 lb. Axle (Two-Speed)
M50 Trailing Axle (Two-Speed)
17.000 lb. Axle (Two-Speed)
d. J-7 3 4 1 —17,000 lb. axle.
3. Disengage tang of nut lock from slot of flat of ad­
justing nut and remove nut lock from housing tube.
4. Use appropriate tool as specified in Step 2 to remove
adjusting nut from housing tube.
Fig . 58 - Hub and Drum Details (Demountable-T/pe Drum)
6. W h eel Bolt 11. Hub Inner Bearing Assembly
7. Drum 12. Drum-to-Hub Retaining Screw
8 . O il Deflector
13. Thrust Washer
9. O il D eflector 14. Bearing Adjusting N ut
10. O il Seal
15. Adjusting N u t Lock
REAR SUSPENSION AND DRIVE LINE 4-29
NOTE: On 5200 through 15,000 lb. axles, re ­
move thrust washer from housing tube.
5. Pull hub and drum assembly straight off axle hous­
ing, using care on the 11,000, through 17,000 lb.
axles to avoid dropping outer bearing inner race and
roller assembly.
NOTE: The hub oil seal should be replaced
whenever the hub is removed for any reason.
. Remove oil seal.
6

Cleaning

1. Immerse bearing cone and roller assemblies in
cleaning solvent. Clean with stiff brush to remove
old lubricant. Blow bearings dry with compressed
air, directing air stream across bearing. Do not
spin bearings while blowing them dry.
NOTE:
To remove inner and outer bearings
and cups see "Bearing Cup Replacement" for
various axles.
2. Thoroughly clean all lubricant off axle housing tube
and out of inside the hub, wipe dry. Make sure all
particles of gasket are removed from outer end of
hub, axle shaft, and hub cap.
3. Scrape old sealing compound out of oil seal bore in
the hub.
16. Gasket
17. A x le Shaft Thrust Spacer
18. Hub Cap
19. Hub Cap Retaining Bolt
20. Hub Inner Bearing Spacer
CHEVROLET TRUCK SERVICE M ANUAL