Hudson 1955 Rambler, Technical & Service Manual

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"Wasp" and "Rambler" Series). Preloading the side
bearings may change the backlash setting, there-
fore, recheck the backlash and correct if neces-
sary.
Tooth Contact Inspection
Inspect the tooth contact pattern to insure that
the ring and pinion gears are adjusted properly.
Paint eight or ten teeth of the ring gear with a
light coat of red lead in oil.
Turn the ring gear around until the painted
section of the ring gear is in contact with the
pinion gear. Turn the pinion with a wrench while
holding the ring gear with the other hand. This
causes the two gears to turn under load and
impresses a pattern on the painted section of the
ring gear (Fig. 35). Impress a pattern on both
Figure 35- Checking Tooth Contact Pattern
Under Load
drive and coast side of ring gear teeth.
This is the tooth contact pattern, the
pattern that is the final proof of the
adjustments.
If all adjustments are correct, the tooth
contact pattern will be distributed over the
central part of the tooth as in Figure 36-A.
If the pattern is high on the ring gear,
as in Figure 36-B, it means the pinion is
too far from the ring gear: In that case,
move the pinion toward the ring gear by
placing a thicker washer or shim between the
pinion gear and bearing.
If the pattern is low on the ring gear
tooth, as in Figure 36-C, the pinion is too
close to the ring gear. Then move the pinion
away from the ring gear by placing a thinner
washer or shim between the pinion gear and
bearing.
If the pattern is toward the small end or
"toe" of the tooth, as in Figure 36-D, the
ring gear is too close to the pinion. In that
case, move the ring gear away from the
pinion by putting a thinner shim on the left
side and a thicker shim on the right.
If the pattern is at the large end or
"heel" of the tooth, as in Figure 36-E, the
ring gear Is too far from the pinion. Then
move the ring gear toward the pinion by
putting a thinner shim on the right side and
a thicker shim on the left side.
When making "toe" or "heel" adjustments,
be sure to keep the same total thickness of
shims at the side bearings.
Axle Shaft Bearing Installation
The axle shaft bearings have no provision
for lubrication after assembly. These bear-
ings should be packed with a good quality
wheel bearing lubricant before the assembly
operation.
Press axle shaft bearings onto the axle
shafts with the small diameter of the cone
tow ard the outer tapered end of the shaft
REAR AXLE - PROPELLER SHAFT 15
FIGURE 36— Tooth Contact Patterns. "A" Illustrates Correct Tooth Pattern Which is Centrally
Located on the Tooth