Drive Pinion Shaft Assembly: Assembly

Measure the dimension "A" of drive pinion shaft.
ST 398643600 GAUGE

Fig 1: Measuring Dimension "A" Of Drive Pinion Shaft
Courtesy of SUBARU OF AMERICA, INC.
Using a press, press-fit the roller bearing to the drive pinion shaft.
CAUTION: Damage may result if too much force is applied to the roller bearing.

NOTE: Use a new roller bearing.

Fig 2: Pressing Roller Bearing To Drive Pinion Shaft
Courtesy of SUBARU OF AMERICA, INC.
After applying ATF to the O-ring and attaching it to the drive pinion shaft, attach the drive pinion collar to the drive pinion shaft.
NOTE: Use new O-rings.
Install the lock washer to drive pinion shaft in the proper direction.

Using the ST, tighten the lock nut.

Calculate the lock washer and lock nut specifications using following formula.

T2 = L2/(L1 + L2) x T1

T1:116 N.m (11.8 kgf-m, 85.6 ft-lb)

[Required torque setting]

T2: Tightening torque

L1: ST2 length 0.072 m (2.83 in)

L2: Torque wrench length

Example:

TIGHTENING TORQUE SPECIFICATION CHART

Torque wrench length m (in)	Tightening torque N.m (kgf-m, ft-lb)
0.4(15.75)	98(10.0, 72.3)
0.45(17.72)	100(10.2, 73.8)
0.5 (19.69)	101 (10.3, 74.5)
0.55(21.65)	102(10.4, 75.2)

NOTE:

ST1 498937110 HOLDER

ST2 499787700 WRENCH

ST3 499787500 ADAPTER

Fig 3: Checking Torque Wrench Length

Courtesy of SUBARU OF AMERICA, INC.

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:

7.6 - 38.1N (0.77 - 3.88 kgf, 1.7 - 8.6 lb)

Fig 4: Measuring Starting Torque Of Bearing
Courtesy of SUBARU OF AMERICA, INC.
Crimp the locknut in 2 locations.
Measure the dimension "B" of the drive pinion shaft.
ST 398643600 GAUGE

Fig 5: Measuring Dimension "B" Of Drive Pinion Shaft
Courtesy of SUBARU OF AMERICA, INC.
Calculate the thickness "t" mm (in) of the drive pinion shim.
t = 6.5 (0.256) +0.0625 (0.0025) - (B - A)

Select three or less shims from following table.

PARTS THICKNESS SPECIFICATION CHART