Rear Drive Shaft: Adjustment

NOTE: When replacing the rear drive shaft or bearing, select the rear drive shaft shim.

Install the rear drive shaft.

Fig 1: Installing Rear Drive Shaft
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, measure the depth "A" from the end surface of ST to the contact surface of ball bearing.
ST 499575400 GAUGE

Fig 2: Measuring Ball Bearing Contact Surface Depth Using Gauge (ST 499575400)
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, measure the height "B" from the mating surface of intermediate case to the end surface of ST.
NOTE: Set the ST so that it does not ride on the bearing inner race.

ST 499575400 GAUGE

Fig 3: Measuring Intermediate Case Mating Surface Height Using Gauge (ST 499575400)
Courtesy of SUBARU OF AMERICA, INC.

Obtain the thickness of rear drive shaft shim using the following formula to select none to four rear drive shaft shims.

T (mm) = A - B + 0.38 - (0.05 - 0.25)

[T (in) = A - B + 0.0149 - (0.002 - 0.01)]

T: Rear drive shaft shim thickness

A: Depth from the ST end surface to the ball bearing contact surface

B: Height from the mating surface of the intermediate case to the ST end face

0.38 mm (0.0149 in): Thickness of gasket

15 mm (0.591 in): Thickness of ST

0.05 - 0.25 mm (0.002 - 0.01 in): Clearance