Oil Pump: Assembly

Using the ST, install the front oil seal.
ST 499587100 OIL SEAL INSTALLER

NOTE: Use a new oil seal.

Fig 1: Installing Oil Seal
Courtesy of SUBARU OF AMERICA, INC.
Apply a coat of engine oil to inner and outer rotors.
Assemble the inner and outer rotors in their original positions.
Assemble the oil relief valve and install relief valve spring and plug.
NOTE: Use a new gasket.
Install the oil pump cover.
Tightening torque:

T1: 5.4 N.m (0.55 kgf-m, 4.0 ft-lb)

T2: 44 N.m (4.5 kgf-m, 32.5 ft-lb)

Fig 2: Identifying Oil Pump Cover Components
Courtesy of SUBARU OF AMERICA, INC.