Subaru 1600 Service Manual page 386

REAR WHEEL DRIVING SYSTEM (4WD MODEL)
3) Bearing
Replace if seizure, peeling, wear,
rust, dragging during rotation, ab-
normal noise or other defect is
evident.
4) Thrust washers of side gear and
pinion mate gear
Replace if seizure, flaw, abnormal
wear or other defect is evident.
5) Oil seal
Replace if deformed or damaged,
and at every disassembling.
6) Differential case
Replace if the bearing bores are
worn or damaged.
7) Differential carrier
Replace if its sliding surfaces are
worn or cracked.
8) Companion flange
Replace if the oil seal lip contacting
surfaces have flaws.
6. Assembly
I) Precautions for assembling
a. Assemble in the reverse order of
disassembling.
Check and adjust each part during
assembly.
b. Keep the shims and washers in
order, so that they are not mis-
installed.
c. Thoroughly clean the surfaces on
which the shims, washers and bear-
ings are to be installed.
d. Apply gear oil when installing the
bearings and thrust washers.
e. Be careful not to mix up the right
and left hand cups of the bearings.
f.
Replace the oil seal with new one at
every disassembly. Apply chassis
grease between the lips
(*)
when
installing the oil seal.
Fig. 8-23 Applying grease to oil seal
2) Adjusting preload for front and
rear bearings.
Adjust the bearing preload with
spacer and washer between front and
rear bearings. Pinion height adjusting
washer has nothing to do with this
adjustment. The adjustment must be
carried out without oil seal.
a. Press front and rear bearing cups
into differential case.
Handle &
Drift Kit
(397471600)
Fig. 8-24 Installing bearing cup
b. Insert Dummy Shaft (398507702)
with pinion height adjusting washer
and rear bearing cone fitted on it
into case.
NOTE:
Reuse the used washer if they show
normal tooth contact pattern when
checked before disassembly.
PInion height adjusting washer
Preload adjusting spacer
\ Preload ad lust InQ washer
Dummy Collar
(398507703)
Dummy Shaft
(398507702)
A14·025
Fig.
8-25
Installing Dummy Shaft
c. Then, install preload adjusting
spacer and washer, front bearing
cone, Dummy Collar (398507703),
companion flange, washer and
drive pinion nut.
8-9
d. Turn Dummy Shaft with hand to
make it sealed, and tighten drive
pinion nut while measuring the pre-
load with spring balance as shown
in the figure. Select preload adjust-
ing washer and spacer so that the
specified preload is obtained when
nut is tightened to the specified tor-
que.
NOTE:
a. Be careful not to give excessive pre-
load.
b. When tightening the drive pinion
nut, lock Dummy Shaft with Block
(398507704) as illustrated here.
Block (398507704)
2 Dummy shaft (398507702)
A14-064
Fig.
8-26
Torque
(Drive
pinion nut)
167 - 196 N·m
(17.0 - 20.0 kg-m,
123 - 145 ft-Ib)
Fig. 8-27 Measuring preload
Front & rear bearing preload
For new bearing:
19.6-28.4N
(2.0 - 2.9 kg, 4.4 - 6.4lb) at
companion flange bolt hole
For used bearing:
8.34 - 16.67 N
(0.85 - 1.7 kg, 1.87 - 3.75 lb)
at companion flange bolt hole