Drive Pinion Shaft Assembly: Assembly

WARNING: This page is about a different variant/trim than selected.

Install the O-ring to plug and install the plug to drive pinion retainer.
NOTE:
- Use new O-rings.
- Apply CVTF to the O-rings.
Tightening torque:

25 N.m (2.5 kgf-m, 18.4 ft-lb)
Using the ST, install the oil seal to drive pinion retainer.
NOTE:
- Apply CVTF to the oil seal press-fitting surface and lip.
- Install the oil seal in the correct direction.
Pulley side

ST 18657AA020 OIL SEAL INSTALLER

Fig 1: Installing Oil Seal To Drive Pinion Retainer (Pulley Side)
Courtesy of SUBARU OF AMERICA, INC.

Front differential side

ST 499277100 BUSHING 1-2 INSTALLER

Fig 2: Installing Oil Seal To Drive Pinion Retainer (Front Differential Side)
Courtesy of SUBARU OF AMERICA, INC.
Measure the dimension "A" of drive pinion shaft.
ST 398643600 GAUGE

Fig 3: Measuring Dimension Of Drive Pinion Shaft
Courtesy of SUBARU OF AMERICA, INC.
Press-fit the new taper roller bearing front side inner race using the ST.
ST 499277200 INSTALLER

Fig 4: Pressing Taper Roller Bearing Front Side Inner Race Using ST
Courtesy of SUBARU OF AMERICA, INC.
Press-fit the new taper roller bearing rear side inner race and outer race together.
CAUTION: Damage may result if too much force is applied to the roller bearing.

NOTE: Press in to a position where the bearing rotates smoothly without play.

Fig 5: Pressing Taper Roller Bearing Rear Side Inner Race And Outer Race
Courtesy of SUBARU OF AMERICA, INC.

Tighten a new lock nut using the ST.

Using the following formula, calculate the torque for a torque wrench.

T2 = L2/(L1 + L2) x T1

T1: 130 N.m (13.3 kgf-m, 95.9 ft-lb)

[Required torque setting]

T2: Tightening torque

L1: ST1 length 0.1 m (3.94 in)

L2: Torque wrench length

Example:

Torque wrench length m (in)	Tightening torque N.m (kgf-m, ft-lb)
0.4 (15.75)	104 (10.6, 76.7)
0.45 (17.72)	106 (10.8, 78.2)
0.5 (19.69)	108 (11.0, 79.7)
0.55 (21.65)	110 (11.2, 81.1)

ST1 18621AA000 ADAPTER WRENCH

ST2 18667AA010 HOLDER

NOTE: Tighten the lock nut while directly aligning ST1 and torque wrench.

Fig 6: Removing Lock Nut

Courtesy of SUBARU OF AMERICA, INC.

Apply differential gear oil to roller of bearing and rotate the bearing several times.
Measure the starting torque of the bearing. Make sure the starting torque is within the specified range. If the torque is not within specified range, replace the roller bearing.
Starting torque:

16.3 - 42.7 N (1.7 - 4.4 kgf, 4.4 - 9.6 lbf)

Fig 7: Measuring Starting Torque Of Bearing
Courtesy of SUBARU OF AMERICA, INC.
Crimp the lock nut in 2 locations.
Measure the dimension "B" of the drive pinion shaft.
ST 398643600 GAUGE

Fig 8: Measuring Dimension Of Drive Pinion Shaft
Courtesy of SUBARU OF AMERICA, INC.
Obtain the thickness "T" mm (in) of the drive pinion shim using the following formula.
T = 6.55±0.1225 - (B - A)

[T in = 0.258±0.0048 - (B - A)]

T: Shim thickness

A: Height from ST to drive pinion shaft bearing catch saucer

B: Height from ST to drive pinion retainer case side end face

Select three or less shims from following table.