Chrysler RAM TRUCK 2500 1994 Service Manual page 149

3 - 42 REAR SUSPENSION AND AXLE
•
Fig. 45 Differential Bearing Cap Reference Letters
Fig. 46 Ring Gear Backlash Measurement
I f the mesh and backlash steps have been followed
in the procedures above, good gear teeth contact pat­
terns should exist.
RING G E A R T E E T H CONTACT PATTERN
ANALYSIS
The ring gear teeth contact patterns will show i f
the pinion gear depth shim(s) have the correct thick­
ness. I t will also show i f the ring gear backlash has
been adjusted correctly. The backlash must be main­
tained within the specified limits until the correct
teeth contact patterns are obtained.
(1) Apply a thin coat of hydrated ferric oxide, to
the drive and coast side of ring gear teeth.
(2) Rotate the ring gear one complete revolution i n
both directions while a load is being applied. Insert a
pry bar between the differential housing and the case
flange. This action will produce distinct contact pat­
terns on both the drive side and coast side of the ring
gear teeth.
(3) Note patterns i n compound. Refer to (Fig. 47)
for interpretation of contact patterns and adjust ac­
cordingly.
(4) Install the axle shafts. Refer to Axle Shaft I n ­
stallation within this group.
(5) Install the housing cover. Refill the differential
with lubricant. Refer to Axle Shaft Installation.
(6) Install the RWAL/ABS brake speed sensor and
cover onto the axle housing. Tighten the sensor to 24
N-m (18 ft. lbs.) torque.