Automatic Locking Hub

1. Install wheel studs if removed.
2. Align scribe marks on hub and rotor, then install six retaining bolts and tighten to specifications.
3. Using bearing installer tools No. J-29015 and J-8092, or equivalents, install outer race.
4. Repeat step 3 for installation of outer bearing and outer race.
5. Install inner bearing, then using seal tools No. J-36830 and J-8092, or equivalent, install oil seal.
6. Coat inner hub with grease, then apply Besco L-2, or equivalent, to inner and outer bearing.
7. Turn hub so chamfer is aligned to tapped hole on outer side, then using installer tool No. J-36827, or equivalent, install hub nut.
8. Using a spring scale, adjust bearing preload to 3.31 lbs.
9. Install lock washer with larger diameter of tapered bore to vehicle. If bolt holes in lock plate are not aligned with corresponding holes in nut, reverse lock plate. If bolt holes are still out of alignment, turn nut enough to obtain alignment. Ensure screw is fastened tightly so head is lower than surface of washer.
10. With transfer lever still in 2H position, install inner cam with cam gear facing out.
11. Lower vehicle from hoist, then support lower link with floor jack, placing axle in normal position.

Fig. 3 Axle Shaft Snap Ring Tool Installation:

Fig. 18 Measuring axle shaft snap ring clearance:

12. Install snap ring tool No. J-36836, or equivalent, to axle shaft with extension tool No. J-36835-2, or equivalent, Fig. 3, then measure clearance t, Fig. 4, between tool and snap ring groove of axle shaft using a feeler gauge.
13. Clearance should be 0.0039 inches. If clearance is larger than specified, select proper shim to meet specification.
14. Remove tool No. J-36836 and ensure inner cam stays in place. If inner cam is removed, repeat steps 10-13.

Fig. 19 Application of drive clutch assembly lubricant (Part 1 of 2):

Fig. 19 Application of drive clutch assembly lubricant (Part 2 of 2):

15. Apply multipurpose grease or bearing grease to portions of clutch assembly as shown Fig. 5, then align cut part of drive clutch assembly with concave part of inner cam.
16. Engage cam teeth of drive clutch assembly to teeth of the inner cam by turning axle shaft.
17. Install snap ring and shims as follows:
a. Install extension tool No. J-36835-2, or equivalent, to axle, Fig. 6.
b. Install snap ring to snap ring tool.
c. Install driver tool No. J-36835-1, or equivalent.
d. Pull axle shaft out by pulling tool No. J-36835-2 and install snap ring to axle by pushing tool No. J-36835-1, then remove tool. Ensure snap ring is fitted correctly.

Fig. 20 Installation of axle snap rings & shims:

18. Install housing assembly, hub cap and retaining bolts and tighten to specification.