Subaru Legacy 2003 Service Manual page 2686

1) Adjusting preload for front and rear bearings
Adjust the bearing preload with spacer and washer
between front and rear bearings. Pinion height ad-
justing washer are not affected by this adjustment.
The adjustment must be carried out without oil seal
inserted.
(1) Press rear bearing race (rear) into differen-
tial carrier with ST1 and ST2.
ST1 398477701 HANDLE
ST2 398477703 DRIFT 2
ST1
(2) Install rear bearing race (front) to differential
using ST1 and ST2.
ST1 398477701 HANDLE
ST2 398477702 DRIFT
(3) Insert ST1 into carrier with pinion height ad-
justing washer and new rear bearing cone fitted
onto it.
NOTE:
Before assembly inspection, when tooth contact is
normal, confirm that washer is not deformed and
re-use the used washer.
(4) Then install preload adjusting spacer and
washer, front bearing cone, ST2, companion
flange, and washer and drive pinion nut.
ST1 398507702 DUMMY SHAFT
ST2 398507703 DUMMY COLLAR
( A )
( B )
( C )
ST2
(A) Pinion height adjusting shim
(B) Preload adjusting spacer
(C) Preload adjusting washer
REAR DIFFERENTIAL FOR T-TYPE
ST2
DI-00079
ST1
DI-00080
DI-31
(5) Turn ST1 with hand to make it seated, and
tighten drive pinion nut while measuring the pre-
load with spring balance. Select preload adjust-
ing washer and spacer so that the specified
preload is obtained when nut is tightened to the
specified torque.
NOTE:
• Use a new lock nut.
• Be careful not to give excessive preload.
• When tightening the drive pinion nut, lock ST1
with ST2 as shown in the figure.
ST1 398507704 BLOCK
ST2 398507702 DUMMY SHAFT
Tightening torque:
181 N·m (18.5 kgf-m, 134 ft-lb)
ST1 ST2
Front and rear bearing preload
For new bearing:
19.6 — 28.4 N (2.0 — 2.9 kgf, 4.4 — 6.4 lb)
at companion flange bolt hole
For used bearing:
8.34 — 16.67 N (0.85 — 1.7 kgf, 1.87 — 3.75 lb)
at companion flange bolt hole
DIFFERENTIALS
ST2
DI-00081
DI-00117