Rear diff SUBARU TRIBECA 2009 1.G Service Owner's Manual

DI-15
Rear Differential (VA–type)
DIFFERENTIALS
13) Remove the rear differential front member.
14) Secure the rear differential using band.
15) Remove the self-lock nuts which hold the rear
differential to rear crossmember.
16) Remove the air breather hose from the sub
frame.
17) Remove the rear differential stud bolt from rear
crossmember bushing.
NOTE:
When removing the stud bolt, carefully adjust the
angle and location of transmission jack and jack
stand, if necessary
18) Pull out the axle shaft from rear differential.
NOTE:
If it is difficult to remove the axle shaft from rear dif-
ferential, remove it using tire lever.
19) Lower the transmission jack.
20) Secure the rear drive shaft to lateral link using
wire.
21) Remove the rear differential member plate from
rear differential.
B: INSTALLATION
1) Insert the rear differential member plate into rear
differential.
2) Set the rear differential to transmission jack.
NOTE:
Secure the rear differential to transmission jack us-
ing band.
3) Install the ST to rear differential.
ST 28099PA090 OIL SEAL PROTECTOR
DI-00474
DI-00276
DI-00277
(A) Rear differential member plate
(A) Rear differential member plate
DI-00475
(A)
DI-00475
(A)
DI-00476
ST

DI-16
Rear Differential (VA–type)
DIFFERENTIALS
4) Insert the spline shaft until the spline portion
comes inside the side oil seal.
ST 28099PA090 OIL SEAL PROTECTOR
5) Remove ST from rear differential.
ST 28099PA090 OIL SEAL PROTECTOR
6) Push the rear differential to insert the axle shaft
into rear differential.
7) Adjust the transmission jack, if necessary, and
insert the rear differential stud bolt into rear cross-
member bushing properly.
8) After inserting the rear differential stud bolt into
the rear crossmember bushing, lift up the transmis-
sion jack and align the rear differential to the its at-
tachment position.
9) Tighten a new self-locking nut temporarily to rear
crossmember.
10) Remove the band from rear differential. Lift up
the rear differential until the rear differential is sep-
arated from the transmission jack.
11) Install the rear differential front member with a
new self-locking nut.
Tightening torque:
T1: 65 N·m (6.6 kgf-m, 48 ft-lb)
T2: 110 N·m (11.2 kgf-m, 81 ft-lb)
DI-00289
ST
DI-00281
DI-00393
DI-00283
DI-00269
DI-00284
T2
T1

DI-17
Rear Differential (VA–type)
DIFFERENTIALS
12) Tighten the self-locking nut.
Tightening torque:
70 N·m (7.1 kgf-m, 51 ft-lb)
13) Lower the transmission jack.
14) Install the air breather hose to the sub frame.
15) Install the propeller shaft.

16) Install the heat shield cover.
17) Install the rear exhaust pipe and muffler.
C: DISASSEMBLY
To detect the real cause of trouble, inspect the fol-
lowing items before disassembling.
•Tooth contact and backlash between hypoid driv-
en gear and drive pinion
•Total preload of drive pinion
1) Remove the air breather hose.
2) Set the ST on vise and install the differential as-
sembly to ST.
ST 398217700 ATTACHMENT SET
3) Drain the gear oil by removing the plug.
4) Remove the rear differential oil temperature
switch.
5) Remove the rear cover by loosening retaining
bolts.
6) Remove the lock plate RH and LH.
7) Remove the holder RH and LH with ST.
ST 18630AA010 WRENCH ASSY
8) Pull out the differential case assembly from dif-
ferential carrier.
NOTE:
Be careful so that the teeth do not to hit against the
case.
DI-00269
STDI-00363
DI-00388
DI-00364
ST
DI-00365
DI-00366

DI-18
Rear Differential (VA–type)
DIFFERENTIALS
9) Remove the bearing race from holder RH and
LH with ST and press.
ST 18758AA000 PULLER
NOTE:
•Make sure the bolt of puller turn manually.
•Set the puller so that its claws catch the groove of
holder.
10) Remove the oil seal from holder RH and LH us-
ing screwdriver.
NOTE:
Perform this operation only when changing oil seal.
11) Extract the bearing cone with ST1, ST2 and
ST3
NOTE:
•Do not attempt to disassemble the parts unless
necessary.
•Never mix up the RH and LH bearing races and
cones.
ST1 498077000 REMOVER
ST2 399520105 SEATS
ST3 899864100 REMOVER
12) Remove the hypoid driven gear by loosening
hypoid driven gear bolts.
13) Remove the self-locking nut while holding the
companion flange with ST.
ST 498427200 FLANGE WRENCH
(A) Groove
(B) Claw
(A) Holder
ST
DI-00367
ST
(A)
(B)
(A)
ST
DI-00368
DI-00369
DI-00370
ST1
ST2
ST3
DI-00371
DI-00372
ST

DI-19
Rear Differential (VA–type)
DIFFERENTIALS
14) Extract the companion flange with a puller.
15) Removes the drive pinion shaft.
16) Remove the rear bearing cone from drive pin-
ion by supporting the cone with ST.
NOTE:
Place the replacer so that its center-recessed side
faces the pinion gear.
ST 398517700 REPLACER
17) Remove the front oil seal from differential carri-
er using screwdriver.
18) Remove the pilot bearing, front bearing cone
and collar.
19) When replacing the bearings, hit out the front
bearing cup and rear bearing cup in this order out of
case using a brass bar.
D: ASSEMBLY
NOTE:
•Assemble in the reverse order of disassembly.
•Check and adjust each part during assembly.
•Use a new gasket.
•Keep the shims and washers in order, so that
they are not improperly installed.
•Thoroughly clean the surfaces on which the
shims, washers and bearings are to be installed.
•Apply gear oil when installing the bearings and
thrust washers.
•Be careful not to mix up the RH and LH bearing
races.
•Replace the oil seal with a new one at every dis-
assembly. Apply grease to the lips when installing
the oil seal.
•Be careful not to mix up the differential oil seal
RH and LH.
(A) Companion flange
(B) Puller
(A) Pilot bearing
(B) Collar
(C) Front bearing
(D) Rear bearing cup
(B)
(A)
DI-00394
DI-00373
ST
(B)(A)(C)(D)
DI-00374
(A) 2 cutout portions along diagonal lines
(B) Tap alternately with brass bar.
(B)
(A)
DI-00077
DI-00078

DI-20
Rear Differential (VA–type)
DIFFERENTIALS
1) Adjusting preload for front and rear bearings
Adjust the bearing preload between front and rear
bearings with collar and washer. Pinion height ad-
justing washer is not affected by this adjustment.
The adjustment must not be carried out with oil seal
inserted.
(1) Install the rear bearing race into the differen-
tial carrier using ST1 and ST2.
ST1 398477701 HANDLE
ST2 398477703 DRIFT 2
(2) Using the ST, install the front bearing race to
the differential carrier.
ST 499277200 INSTALLER
(3) Insert the front bearing cone.
NOTE:
Use new front bearing cone.
(4) Measure and record the thickness of pinion
adjust washer.
NOTE:
If tooth contact (drive pinion, hypoid driven gear) is
normal in the inspection before disassembling, ver-
ify that the washer is not deformed, and then re-use
the used washer.
(5) Insert the ST1 into carrier with the pinion
height adjusting washer and rear bearing cone
fitted onto it.
NOTE:
Use new rear bearing cone.
(6) Install the preload adjusting collar & washer,
front bearing cone, collar, companion flange,
and washer & self-locking nut.
ST1 18678AA000 DUMMY SHAFT
(7) Turn ST1 by hand to seat the bearing, and
measure the initial load and initial torque with a
spring scale while tightening the selflocking nut.
Select the preload adjusting washer and collar
so that the specified preload is obtained when
nut is tightened to the specified torque.
NOTE:
•Use a new self-locking nut.
•Be careful not to give excessive preload.
•When tightening the self-locking nut, lock com-
panion flange with ST2 as shown in the figure.
•Measure the preload in direction of tangent to the
flange.
ST1 18678AA000 DUMMY SHAFT
ST2 498427200 FLANGE WRENCH
Tightening torque:
191 N·m (19.5 kgf-m, 141 ft-lb)
DI-00375
ST2
ST1
DI-00376
ST
(A) Pinion height adjusting washer
(B) Preload adjusting collar
(C) Preload adjusting washer
(D) Collar
ST1DI-00377
(D)(C)(B)(A)
DI-00398
ST2

DI-21
Rear Differential (VA–type)
DIFFERENTIALS
Initial load:
12.7—32.2 N (1.3—3.28 kgf, 2.9—7.24 lb)
Initial torque:
0.48 — 1.22 N·m (0.045—0.124 kgf-m, 0.32—
0.9 ft-lb)
2) Adjusting drive pinion height:
Adjust the drive pinion height with washer installed
between the rear bearing cone and the back of pin-
ion gear.
(1) Install the ST2.
ST1 18678AA000 DUMMY SHAFT
ST2 18831AA010 DIFFERENTIAL CARRIER
GAUGE
(2) Install the side holder LH to the left side of
the differential carrier in reverse direction.
Preload adjusting washer
Par t No. Thickness mm (in)
38336AA430 1.500 (0.0591)
38336AA440 1.513 (0.0596)
38336AA450 1.525 (0.0600)
38336AA460 1.538 (0.0606)
38336AA470 1.550 (0.0610)
38336AA480 1.563 (0.0615)
38336AA490 1.575 (0.0620)
38336AA500 1.588 (0.0625)
38336AA510 1.600 (0.0630)
38336AA520 1.613 (0.0635)
38336AA530 1.625 (0.0640)
38336AA540 1.638 (0.0645)
38336AA550 1.650 (0.0650)
38336AA560 1.663 (0.0655)
38336AA570 1.675 (0.0659)
38336AA580 1.688 (0.0665)
38336AA590 1.700 (0.0669)
38336AA600 1.713 (0.0674)
38336AA610 1.725 (0.0679)
38336AA620 1.738 (0.0684)
38336AA630 1.750 (0.0689)
38336AA640 1.763 (0.0694)
38336AA650 1.775 (0.0699)
DI-00152
DI-00481
Preload adjusting collar
Par t No. Length mm (in)
31454AA250 51.05 (2.010)
31454AA260 51.25 (2.018)
31454AA270 51.35 (2.022)
31454AA280 51.45 (2.026)
31454AA290 51.55 (2.030)
31454AA300 51.65 (2.033)
31454AA310 51.75 (2.037)
31454AA320 51.85 (2.041)
31454AA330 52.05 (2.049)
(A) Pinion height adjusting washer
RH
LH
N
(A)
ST2ST1
DI-00379
DI-00380

DI-22
Rear Differential (VA–type)
DIFFERENTIALS
(3) Measure the clearance N between the end
of ST2 and the end surface of ST1 by using a
thickness gauge.
NOTE:
Make sure there is no clearance between the case
and ST2.
ST1 18678AA000 DUMMY SHAFT
ST2 18831AA010 DIFFERENTIAL CARRIER
GAUGE
(4) Obtain the thickness of pinion height adjust-
ing washer to be inserted from the following for-
mula, and replace the temporarily installed
washer with this one.
NOTE:
Adjust it using the 0 — 3 washers.
T = To + N – 0.05 mm (0.0020 in)
(Example of calculation)
To = 0.15 mm (0.0020 in)
N = 0.1 mm (0.0039 in)
T = 0.15 mm (0.0020 in) + 0.1 mm (0.0039 in) –
0.05 mm (0.0020 in) = 0.2 mm (0.0079 in)
Result: Thickness = 0.2 mm (0.0079 in)
Therefore use part number 32295AA370.
3) Install the selected pinion height adjusting wash-
er on drive pinion, and press the rear bearing cone
into position with ST.
ST 398177700 INSTALLER
4) Insert the drive pinion into the differential carrier,
and install the preselected bearing preload adjust-
ing collar and washer.
5) Set ST and differential carrier to the press and
install the front bearing cone.
ST 399780104 WEIGHT
NOTE:
Set the carrier to the press until the companion
flange is installed.
TThickness of pinion height adjusting
washer mm (in)

To T h i c k n e s s o f w a s h e r t e m p o r a l l y
inserted mm (in)

NClearance of thickness gauge mm (in)
Memo:

Pinion height adjusting washer
Par t No. Thickness mm (in)
32295AA350 0.150 (0.0059)
32295AA360 0.175 (0.0069)
32295AA370 0.200 (0.0079)
32295AA380 0.225 (0.0089)
32295AA390 0.250 (0.0098)
32295AA400 0.275 (0.0108)
DI-00381
ST2
ST1
(A) Drive pinion
(B) Bearing preload adjusting collar
(C) Bearing preload adjusting washer
(D) Differential carrier
ST
DI-00085
(D)
(A)
(B)
(C)
DI-00382
ST
DI-00383

DI-23
Rear Differential (VA–type)
DIFFERENTIALS
6) Insert the collar, then install the pilot bearing.
7) Fit a new oil seal with ST.
NOTE:
•Press-fit until the oil seal end comes 1 mm (0.04
in) inward from end of carrier.
•Apply grease to the oil seal lips.
ST 499277200 INSTALLER
8) Press-fit the companion flange with ST.
NOTE:
Be careful not to damage the bearing.
ST 899874100 INSTALLER
9) Apply Lock-Tite to the drive pinion shaft screw
threads and on the new nut seat.
Lock Tite:
THREE BOND 1324 (Part No. 004403042)
10) Attach the nut and use the ST to fix the com-
panion flange in place, then tighten.
ST 498427200 FLANGE WRENCH
Tightening torque:
191 N·m (19.5 kgf-m, 141 ft-lb)
11) Measure the initial torque and initial load.
Initial load:
12.7—32.2 N (1.3—3.28 kgf, 2.9—7.24 lb)
Initial torque:
0.48 — 1.22 N·m (0.045—0.124 kgf-m, 0.32—
0.9 ft-lb)
(A) Pilot bearing
(B) Collar
DI-00389
(A)
(B)
ST
DI-00089
DI-00384
ST
DI-00372
ST
DI-00152
DI-00481

DI-24
Rear Differential (VA–type)
DIFFERENTIALS
12) Install the hypoid driven gear to differential
case.
NOTE:
•Tighten diagonally while tapping the bolt heads.
•Set a cushioning such as wooden block, alumi-
num plate or shop cloth between vise and differen-
tial case if the side gear comes into contact with
vise.
Tightening torque:
62 N·m (6.3 kgf-m, 45.6 ft-lb)
13) Press the side bearing into differential case us-
ing ST.
ST 398487700 DRIFT
14) Assemble holders.
(1) Install the new oil seal into holder RH and
LH.
ST 498447100 INSTALLER
(2) Install the bearing race into holder RH and
LH.
ST 398177700 INSTALLER
CAUTION:
Make sure that the RH and LH oil seals, bearing
outer races and cones are properly assembled.
(3) Install the differential assembly into differen-
tial carrier in the reverse order of disassembly.
(4) Temporally tighten the side holders RH and
LH in differential carrier to install.
DI-00371
ST
DI-00095
ST
DI-00166
ST
DI-00167
DI-00366