Oil Pump Housing: Adjustment

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

Using the ST, measure the length "L", which is from the mating surface of transmission to the recessed portion of high clutch drum.
ST 398643600 GAUGE

Fig 1: Measuring Length L Which From Mating Surface Of Transmission using Gauge ST 398643600
Courtesy of SUBARU OF AMERICA, INC.
Using the ST, measure the length from oil pump housing mating surface to the top surface of oil pump cover with thrust needle bearing.
ST 398643600 GAUGE

Fig 2: Measuring Length From Oil Pump Housing using Gauge ST 398643600
Courtesy of SUBARU OF AMERICA, INC.

Calculation of total end play

Select the suitable bearing race from among those listed in this table so that clearance C to be within 0.25 to 0.55 mm (0.0098 to 0.0217 in).

C = (L + G) - lambda

END PLAY

C	Clearance between concave portion of high clutch and end of clutch drum support
L	Length from case mating surface to concave portion of high clutch
G	Gasket thickness [0.28 mm (0.0110 in)]
lambda	Height from housing mating surface to upper surface of clutch drum support

Fig 3: Identifying End Play

Courtesy of SUBARU OF AMERICA, INC.

THRUST NEEDLE BEARING

After completing the end play adjustment, insert the bearing race in recess of the high clutch. Install the thrust needle bearing to oil pump cover using Vaseline.
After correctly install the new gasket to the case mating surface, carefully install the oil pump housing assembly. Be careful to avoid hitting the drive pinion against the inside of case.
Install both parts with dowel pins aligned. Make sure no clearance at mating surface.