Hudson 1948 - 1952, Service Manual

Page: 255 / 333

REAR AXLE 11 - 13
6. Install bearing cones on differentials case hubs, using
differential side bearing replacer J-2546 as shown in
Figure 29.
7. Place differential case assembly in carrier and assemble
differential bearing adjusting nuts.
8. Install differential bearing outer races and caps in place
and insert bolts and lock-washers, drawing them up
finger tight. (Make sure the bolts and lockwashers are in
good condition).
9. Turn the left hand adjusting nut to the right (clockwise)
until no play can be felt between ring gear and pinion.
10. Turn the right hand adjusting nut to the right
(clockwise) and draw it up tight, using differential bear-
ing adjusting nut wrench J-972, See Figure 30.
FIGURE 30
11. Mount dial indicator, KMO-30 on the differential carrier
flange. Turn left hand adjusting nut to the left
(counterclockwise) one half notch. Turn right hand adjusting
nut to the right (clockwise) one half notch.
NOTE: It is suggested that while this operation is
being accomplished, the ring gear be rotated to allow
the tapered bearings to seat properly.
FIGURE 31
12. Rest plunger of dial indicator on the outer edge of the ring
gear tooth. See Figure 31. When moving the ring gear by
hand, the back lash should be between .004" to .006". If
the reading does not conform to recommended tolerances
t u r n adjusting nuts one half notch at a time until desired
reading is obtained.
NOTE: After setting the back lash tolerance, use a small
brush and paint seven or eight teeth of the ring gear with
red lead. Move the painted teeth of the ring gear over the
pinion until a good impression of the tooth contact is
assured. The impressions obtained on the gear teeth will be
similar to those shown in Figure 32. With this illustration
as a guide, make adjustments accordingly.
13. Tighten left bearing cap bolts. Turn right differential
bearing. adjusting nut to the right (clockwise) one full
notch.
This additional tightening provides the necessary .008" to
.012" "Spread" to the differential carrier for proper opera-
tion.
14. Tighten cap bolts securely on right differential bearing
cap.