Transfer Clutch: Adjustment

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

Measure the distance "A" from the end of ST to the rear drive shaft using the ST.
ST 398643600 GAUGE

Fig 1: Measuring Distance "A" From End Of ST To Rear Drive Shaft Using ST
Courtesy of SUBARU OF AMERICA, INC.
Measure distance "B" from the transmission case mating surface to the end of ST using ST1 and ST2.
ST1 398643600 GAUGE

ST2 499577000 GAUGE

Fig 2: Measuring Distance "B" From Transmission Case Mating Surface To End
Courtesy of SUBARU OF AMERICA, INC.

Calculation formula:

NOTE: Calculate "T":
T = A - B + 35.4 mm
[T = A - B + 1.3937 in]
T: Thrust needle bearing thickness
A: Distance from the end of the ST to end of rear drive shaft
B: Distance from the mating surface of the transmission case to the end of the ST
Example:
When, A = 33.6 mm (1.3228 in), B = 65.05 mm (2.5610 in)
T = 33.6 -- 65.05 + 35.4 = 3.95
[T= 1.3228 - 2.5610+ 1.3937 = 0.1555]
After calculation, the value of "T" becomes 3.95. Select a bearing thickness of 3.8 mm (0.150 in).

NOTE: Calculation formula for "T" is applied when measuring using ST (398643600 GAUGE, 499577000 GAUGE). When not using the ST,
T = (A - α + 0.45 mm) - (B - β) - H
[T = (A - α + 0.0177 in) - (B - β) - H]
is applied.
T: Thrust needle bearing thickness
A: Distance from the end of collar that was used as the substitute of the ST, to the end of reduction drive shaft
B: Distance from the matching surface of transmission case, to the end of collar that was used as the substitute of the ST
α: Thickness of collar used when measuring "A"
β: Thickness of collar used when measuring "B"
0.45: Gasket thickness (mm)
0.0177: Gasket thickness (in)
H: Shim clearance

GASKET THICKNESS SPECIFICATIONS

Thrust needle bearing
Part number	Thickness mm (in)
806536020	3.8 (0.150)
806535030	4.0 (0.157)
806535040	4.2 (0.165)
806535050	4.4 (0.173)
806535060	4.6 (0.181)
806535070	4.8 (0.189)
806535090	5.0 (0.197)