Subaru IMPREZA 2002 Service Manual page 102

GENERAL DIAGNOSTIC TABLE
I
DIFFERENTIALS
(3) Scored or chipped teeth of hypoid
gear.
(4) Seized hypoid gear.
(5) Improper preload for front or rear
bearings.
I
SvmDtom or trouble
Replace hypoid gear set.
Replace hypoid gear set.
Readjust.
6.
Gear noises
NOTE:
Since noises from engine, muffler, trans-
mission, propeller shaft, wheel bearings,
tires, and body are sometimes mistaken
for noises from differential assembly, be
careful in checking them. Inspection
methods to locate noises include coast-
ing, accelerating, cruising, and jacking-up
all four wheels. Perform these inspections
according to condition of trouble. When
listening to noises, shift gears into four
wheel drive and fourth speed position, try-
ing to pick up only differential noise.
(6) Seized, scored or chipped front or
rear bearing
.
(7) Seized, scored or chipped side bear-
ina.
Replace.
Replace.
(1) Improper tooth contact of hypoid gear.
I
Readjust or replace hypoid gear set.
(2) Improper backlash for hypoid gear.
I
Readiust.
I
(8) Vibrating differential carrier.
I
Replace.
DI-42