Subaru 2004 LEGACY, Service Manual

Page: 111 / 609

DI-41
DIFFERENTIALS
Rear Differential (T-type)
Backlash:
0.10 — 0.20 mm (0.0039 — 0.0079 in)
(7) At the same time, measure the total preload
of drive pinion. Compared with the resistance
when differential case is not installed, if the total
preload is not within specification, adjust the
thickness of side bearing retainer shims, in-
creasing/reducing by an even amount at a time.
Total preload:
20.7 — 54.4 N (2.1 — 5.5 kgf, 4.7 — 12.2 lb)
15) Recheck the hypoid driven gear to drive pinion
backlash.
Backlash:
0.10 — 0.20 mm (0.0039 — 0.0079 in)
16) Check the hypoid driven gear runout on its
back surface, and make sure that pinion and hy-
poid driven gear rotates smoothly.
If the hypoid driven gear runout on its back surface
exceed the specification, verify that there is any for-
eign material between hypoid driven gear and dif-
ferential case, and they are not deformed.
Hypoid driven gear runout on its back surface:
0.05 mm (0.0020 in)
17) Checking and adjusting the tooth contact of hy-
poid driven gear
(1) Apply an even coat of red lead on both sides
of three or four teeth on the hypoid driven gear.
Check the contact pattern after rotating the hy-
poid driven gear several revolutions back and
forth until a definite contact pattern appears on
the hypoid driven gear.
(2) When the contact pattern is incorrect, read-
just.
NOTE:
Be sure to wipe off red lead completely after adjust-
ment is completed.
• Correct tooth contact
Checking item: Tooth contact pattern is slightly
shifted toward toe side under no-load rotation.
[When loaded, contact pattern moves toward
heel.]
DI-00099
DI-00099
(A) Toe side
(B) Heel side
DI-00101
AT-00207
(A)
(B)