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PROPELLER
SHAFT
DIFFERENTIAl CARRIER
TROUBLE DIAGNOSES AND
CORRECTIONS
When
a
differential
carrier is
sus
pected
of
being noisy
it is
advisable
to
make
a
thorough
lest
to
determine
whether
the
noise
originates
in the
Condition
Noise
on
drive
coast
and float
Noise
on
turn
Knocking
sound
during
starting
or
gear
shifting
tires
road surface exhaust
universal
joint propeller
shaft wheel
bearings
engine
transmission
or
differential
carrier
Noise which
originates
in
other
Probable
cause
Shortage
of oil
Incorrect tooth
contact
between
ring
gear
and drive
pinion
Incorrect backlash between
ring
gear and
drive
pinion
Seized up
or
damaged ring gear
and drive
pinion
Seized up
damaged
or
broken drive
pinion
bearing
Seized up
damaged
or
broken
side
bearing
Loose bolts
or
nuts
fIXing
ring
gear
bearing
cap
etc
Seized
up
damaged
or
broken side and
pinion
mate
Seized up
damaged
or
broken side gear
and
pinion
thrust washer
Pinion
mates too
tight
on
their shaft
Excessive backlash
Incorrect
backlash
ring
ar
to
drive
pinion
or
side gear
to
pinionmate
Worn gears
or case
Worn
rear
axle shaft and side
gear
spline
Drjve
pinion
bearing
under p reload
Loose drive
pinion
nut
Loose bolts
or
nuts
ftxing
ring
gear
bearing
cap
etc
PD 14
places
cannot
be
corrected
by
adjust
ment
or
replacement
of
parts
in
dif
ferential
carrier
Corrective
action
Supply
gear
oil
Rebuild
gear
carrier
if
necessary
Adjust
tooth
contact
or
replace
the
hypoid
gear
set
Adjust
backlash
or
replace
the
hypoid
gear
set if
necessary
Replace
the
hypoid
gear
set
Replace
the
pinion
bearing
and
faulty
parts
Replace
the side
bearing
and
faulty
parts
Clamp
them
to
specified
torque
and
replace
faulty
parts
Replace
faulty
parts
Replace faulty
parts
Replace faulty
parts
Adjust
backlash
Replace
worn
parts
Replace
worn
parts
Adjust
preload
Repair
or
replace
Clamp
them
or
replace
if necessary
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