Dodge RAM TRUCK 1500 1995 Service Manual page 128

3 - S REAR SUSPENSION AND AXLE
mm
SERVICE DIAGNOSIS
Condition
Possible Cause
Correction
WHEEL NOISE
AXLE SHAFT NOISE
AXLE SHAFT BROKE
DIFFERENTIAL CASE
CRACKED
DIFFERENTIAL GEARS
SCORED
LOSS OF LUBRICANT
(a) Wheel loose.
(b) Faulty, brinelled wheel bearing.
(a) Misaligned axle shaft tube.
(b) Bent or sprung axle shaft.
(c) End play in drive pinion bearings.
(d) Excessive gear backlash between ring
gear and pinion gear.
(e) Improper adjustment of drive pinion
gear shaft bearings.
(!) Loose drive pinion gearshaft yoke nut.
(g) Improper wheel bearing adjustment.
(h) Scuffed gear tooth contact surfaces.
(a) Misaligned axle shaft tube.
(b) Vehicle overloaded.
(c) Erratic clutch operation
(d) Grabbing clutch.
(a) Improper adjustment of differential
bearings.
(b) Excessive ring gear backlash.
(c) Vehicle overloaded.
(d) Erratic clutch operation.
(a) Insufficient lubrication.
(b) Improper grade of lubricant.
(c) Excessive spinning of one wheel/tire.
(a) Lubricant level too high.
(a) Tighten loose nuts.
(b) Faulty or brinelled bearings must be
replaced.
(a) Inspect axle shaft tube alignment.
Correct as necessary.
(b) Replace bent or sprung axle shaft.
(c) Refer to Drive Pinion Bearing Pre-Load
Adjustment.
(d) Check adjustment of ring gear
backlash and pinion gear. Correct as
necessary.
(e) Adjust drive pinion shaft bearings.
(f) Tighten drive pinion gearshaft yoke nut
with specified torque.
(g) Readjust as necessary.
(h) If necessary, replace scuffed gears.
(a) Replace broken axle shaft after
correcting axle shaft tube alignment.
(b) Replace broken axle shaft. Avoid
excessive weight on vehicle.
(c) Replace broken axle shaft after
inspecting for other possible causes.
Avoid erratic use of clutch.
(d) Replace broken axle shaft. Inspect
clutch and make necessary repairs or
adjustments.
(a) Replace cracked case; examine gears
and bearings for possible damage. At
reassembly, adjust
differential bearings properly.
(b) Replace cracked case; examine gears
and bearings for possible damage. At
reassembly, adjust ring gear backlash
properly.
(c) Replace cracked case; examine gears
and bearings for possible damage.
Avoid excessive weight on vehicle.
(d) Replace cracked case. After inspecting
for other possible causes, examine
gears and bearings for possible
damage. Avoid erratic use of clutch.
(a) Replace scored gears. Scoring marks
on the drive face of gear teeth or in
the bore are caused by instantaneous
fusing of the mating surfaces. Scored
gears should be replaced. Fill rear
differential housing to required capacity
with proper lubricant. Refer to
Specifications.
(b) Replace scored gears. Inspect all
gears and bearings for possible
damage. Clean and refill differential
housing to required capacity with
proper lubricant.
(c) Replace scored gears. Inspect all
gears, pinion bores and shaft for
damage. Service as necessary.
(a) Drain excess lubricant by removing fill
plug and allow lubricant to level at
lower edge of fill plug hole.
J9003-49