Reduction Driven Gear: Adjustment

Measure the height "A" from the ST upper face to the ball bearing catch surface.
ST 499575600 GAUGE

Fig 1: Measuring Height "A" From ST Upper Face To Ball Bearing Catch Surface Using Gauge
Courtesy of SUBARU OF AMERICA, INC.
Measure the height "B" from the ST to the mating surface of the transmission case.
ST 499575600 GAUGE

Fig 2: Measuring Height "B" From ST To Mating Surface Of Transmission Case Using Gauge
Courtesy of SUBARU OF AMERICA, INC.

Obtain the thickness of transfer drive gear shim using the following formula to select one to three transfer drive gear shims.

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

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

T: Shim thickness

A: Height from the ST upper face to the ball bearing catch surface

B: Height from ST to transmission case mating surface 0.05 - 0.25 mm (0.002 - 0.01 in): Clearance