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 new roller bearing into the specified position.
NOTE: If excessive force is applied to roller bearing, the roller bearing will not turn easily.

Fig 2: Pressing-Fit Roller Bearing
Courtesy of SUBARU OF AMERICA, INC.
After fitting a new O-ring to the drive pinion shaft, attach the drive pinion collar to the drive pinion shaft.
Install the lock washer to drive pinion shaft in the proper direction.

Tighten the new lock nuts using ST1, ST2 and ST3.

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, 85.3 ft-lb)

[Required torque setting]

T2: Tightening torque

L1: ST2 length 0.072 m (2.83 in)

L2: Torque wrench length

Example:

TIGHTENING TORQUE

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(10.2,73.5)
0.5(19.69)	101 (10.3,74.6)
0.55 (21.65)	102(10.4,75.4)

ST1 498937110 Holder

ST2 499787700 WRENCH

ST3 499787500 Adapter

NOTE: Attach ST2 to torque wrench as straight as possible.

Fig 3: Identifying 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:

MPT model

7.6 - 38.1 N (0.776 - 3.88 kgf, 1.7 - 8.6 lb)

VTD model

6.8 - 47.5 N (0.69 - 4.84 kgf, 1.52 - 70.67 lb)

Fig 4: Measuring Starting Torque Of Bearing
Courtesy of SUBARU OF AMERICA, INC.
Crimp the locknut in 2 locations.
Measure dimension "B" of 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) of the drive pinion shim.
t = 6.5±0.0625 - (B - A)

Select three or less shims from following table.

DRIVE PINION SHIM THICKNESS