Chrysler RAM TRUCK 2500 1994 Service Manual page 95

2 - 38 FRONT SUSPENSION AND AXLE
Fig. 37 inner Bearing Removal
Clean the axle shaft tubes with a stiff wire brush
or clean cloth.
Inspect the components for;
• Smooth appearance with no broken/dented sur­
faces on the bearing rollers or the roller contact sur­
faces
• Bearing cups must not be distorted or cracked
• Machined surfaces should be smooth and without
any raised edges
• Raised metal on shoulders of cup bores should be
removed with a hand stone
• Wear and damage to pinion gear mate shaft, pin­
ion gears, side gears and thrust washers. Replace as
a matched set only.
• Ring and pinion gear for worn and chipped teeth
• Ring gear for damaged bolt threads. Replaced as a
matched set only.
• Pinion yoke for cracks, worn splines, pitted areas,
and a rough/corroded seal contact surface. Repair or
replace as necessary.
• Preload shims for damage and distortion. Install
new shims i f necessary.
DIFFERENTIAL ASSEMBLY
(1) Install the following components i n the differ­
ential case.
• Differential side gears and thrust washers
• Pinion gears and thrust washers
• Pinion gear mate shaft (align holes in shaft and case)
• Pinion gear mate shaft roll pin
If replacement gears and thrust washers were
installed, it is not necessary to measure the
gear backlash. Correct fit is due to close ma­
chining tolerances during manufacture.
. •
(2) Invert the differential case and start two ring
gear bolts. This will provide case-to-ring gear bolt
hole alignment.
(3) Install new ring gear bolts and alternately
tighten to 95-122 N-m (70-90 ft. lbs.) torque (Fig. 38).
TORQUE
Fig. 38 Ring Gear Bolt Installation
(4) Lubricate all differential components with a
light coat of grease or hypoid gear lubricant.
PINION GEAR DEPTH INFORMATION
Ring and pinion gears are supplied as matched sets
only. The identifying numbers for the ring and pinion
gear are etched into the face of each gear (Fig. 39). 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 of a pinion etched with
a (0). The standard setting from the centerline of the
ring gear to the back face of the pinion is;
• Model 44 axle: 109.5 mm (4.312 inches) Fig. 40.
• Model 60 axle: 127 mm (5.000 inches) Fig. 40.
The standard depth provides the best teeth contact
pattern.
THE BUTTON END ON THE PINION GEAR
HEAD IS NO LONGER A MACHINED-TO-SPECIFI-
CATIONS SURFACE. DO NOT USE THIS SUR­
FACE FOR PINION DEPTH SET-UP OR
CHECKING (Fig. 40).
Compensation for depth variance is achieved by a
selected thickness oil slinger (production) or shims
(service). The slinger is placed between the inner pin­
ion bearing cone and gear head (Fig. 41). The shim
pack is placed under the inner (rear) bearing cup. To
change the pinion adjustment, shims are available i n
thicknesses of 0.003, 0.005, and 0.010 inch. I f