Selection Of Driven Plate No. 3

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

Install the drive plate and driven plate to the center differential carrier.
Measure the depth "A" from the mating surface of the extension case to the transfer clutch piston.

Fig 1: Measuring Depth From Mating Surface Of Extension Case To Transfer Clutch Piston
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, measure the height "B" from the AT main case mating surface to end of ST, and then subtract the thickness of ST (PISTON GUIDE) (50 mm (1.97 in)) from measured value.
ST 398744300 PISTON GUIDE

Fig 2: Measuring Height Of AT Main Case Mating Surface To End Of ST
Courtesy of SUBARU OF AMERICA, INC.

Calculation formula:

When clearances are 0.2 mm (0.008 in):

T (mm) = A - B + 0.08

[T (in) = A - B + 0.0031]

When clearances are 0.6 mm (0.024 in):

T (mm) = A - B - 0.32

[T (in) = A - B - 0.0126]

T: Thickness of driven plate No. 3

Standard:

0.2 - 0.6 mm (0.008 - 0.024 in)

NOTE: Calculation formula for "T" is applied when measuring using ST (398643600 GAUGE, 398744300 PISTON GUIDE). When not using the ST,

When clearances are 0.2 mm (0.008 in):

T (mm) = A - (B - α - 0.28) - 0.2

[T (in) = A - (B - α - 0.011) - 0.008]

When clearances are 0.6 mm (0.024 in):

T (mm) = A - (B - α - 0.28) - 0.6

[T (in) = A - (B - α - 0.011) - 0.024] is applied.

T: Thickness of driven plate No. 3

Depth from mating surface of the extension case to the transfer clutch piston.
Height from the AT main case mating surface to the contact face of the tool that was used as the substitute of the ST.

α: Thickness of tool used when measuring "B"

0.28 (0.011): Gasket thickness (Unit mm (in))

If it is out of specification, select the driven plate No. 3 to adjust within the specification.