Pump Housing: Adjustment

Measure the distance "L" from the end of ST to the high clutch drum concave section using the ST.
ST 398643600 GAUGE

Fig 1: Measuring Distance From End Surface Of Special Tool
Courtesy of SUBARU OF AMERICA, INC.
Measure the distance from the oil pump housing mating surface to the end surface of the ST using the ST.
ST 398643600 GAUGE

Fig 2: Measuring Distance From Oil Pump Housing Mating Surface
Courtesy of SUBARU OF AMERICA, INC.

Calculation of total end play

Select the suitable thrust needle bearing from the table below so that clearance C will be within 0.25 to 0.55 mm (0.0098 to 0.0217 in).

C = (L + G) - l

DIAGNOSIS PROCEDURE

C	Clearance between concave section of high clutch and end of clutch drum support
L	Distance from the transmission case mating surface to concave portion of high clutch
G	Gasket thickness [0.28 mm (0.0110 in)]
l	Height from the oil pump housing mating surface to the upper surface of the cover for the oil pump having the thrust needle bearing.

Fig 3: Identifying Height From Housing Mating Surface To End Surface Of Special Tool

Courtesy of SUBARU OF AMERICA, INC.

THRUST NEEDLE BEARING THICKNESS

After completing the end play adjustment, insert the bearing race in the high clutch race. Apply vaseline to install the thrust needle bearing to oil pump cover.
After correctly installing 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 there is no clearance at the mating surface.