Chrysler RAM TRUCK 2500 1994 Service Manual page 143

3 - 36 REAR SUSPENSION AND AXLE
TOOL G 3 3 3 9
8903-29
Fig. 27 Differential Case End Play Measurement
thickness will be determined during the ring
gear backlash adjustment.
(12) Remove indicator and pilot stud.
PINION G E A R DEPTH INFORMATION
Gears are supplied as matched sets only. The iden­
tifying numbers for the ring and pinion gear are
etched into the face of each gear (Fig. 28). A plus (+)
number, minus (-) number or zero (0) is etched into
the face of the pinion gear. This number is the
amount (in thousandths of an inch) the depth varies
from the standard depth setting. The standard depth
provides the best teeth contact pattern.
PRODUCTION
NUMBERS
DRIVE P I N I O N
GEAR DEPTH
VARIANCE
GEAR MATCHING NUMBER
(SAME A S RING GEAR NUMBER)
J9003-100
Fig. 28 Pinion Gear ID Numbers
The standard depth is the distance (Fig. 29) from
the centerline of the axle shaft/ring gear to the shoul­
der of the rear pinion bearing.
• Model 60 axle, the standard depth/distance is
127.00 mm (5.000 inches)
• Model 70 axle, the standard depth/distance is
136.525 mm (5.375 inches).
• Model 80 axle, the standard depth/distance is
147.625 mm (5.812 inches).
INNER PINION
BEARING
BUTTON END
CENTERLINE OF
RING GEAR
J9403-56
Fig. 29 Pinion Gear Standard Depth/Distance
Compensation for depth variance is achieved by
two methods. One method is shims placed between
the pinion gear rear bearing cup and housing (Fig.
30). The second method is selective shim between the
pinion gear head and bearing cone.
P I N I O N GEAR
DEPTH S H I M
OR
SELECTIVE
S H I M
P I N I O N
B E A R I N G
PRELOAD
SPACER/SHIM
DIFFERENTIAL
B E A R I N G
S H I M J9403-64
Fig. 30 Shim Locations
I f new gear set is being installed, note the depth
variance etched into original and new pinion gear.
Add or subtract the thickness of the original depth
shims to compensate for the difference i n the depth
variances. Refer to the Depth Variance charts.