Transfer Clutch: Adjustment

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

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

Fig 1: Measuring Distance A Using Gauge ST 398643600
Courtesy of SUBARU OF AMERICA, INC.
Measure the distance "B" from the transmission case mating surface to the reduction drive gear end surface using ST1 and ST2.
ST1 398643600 GAUGE

ST2 499577000 GAUGE

Fig 2: Measuring Distance B From Transmission Case Using Gauge ST1 398643600 And Gauge ST2 499577000
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 end of extension case to end of rear drive shaft

B: Distance from end of transmission case to end of reduction drive gear

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, therefore select 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 ST, apply

T = (A - a + 0.45 mm) - (B - b) - H

[T = (A - a + 0.0177 in) - (B - b) - H]

T: Thrust needle bearing thickness

A: Distance from end of extension case to end of reduction drive shaft

B: Distance from end of transmission case to end of rear drive shaft

a: Collar thickness used when measuring "A"

b: Collar thickness used when measuring "B"

0.45: Gasket thickness (mm)

0.0177: Gasket thickness (in)

H: Shim clearance

THRUST NEEDLE BEARING