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Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Lubrication System (2.5L)) >> Oil Pump >> Assembly
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Oil Pump: Assembly

WARNING: This page is about a different variant/trim than selected.
  1. Using the ST, install the front oil seal.

    ST 499587100 OIL SEAL INSTALLER

    NOTE: Use a new front oil seal.
    Fig 1: Installing Front Oil Seal Using ST
    G04997893Courtesy of SUBARU OF AMERICA, INC.
  2. Apply a coat of engine oil to the inner rotor and outer rotor.
  3. Install the inner rotor and outer rotor.
  4. Assemble the oil relief valve and install relief valve spring and plug.
    NOTE: Use a new gasket.
  5. Install the oil pump cover.

    Tightening torque: 

    T1: 5.4 N.m (0.6 kgf-m, 4.0 ft-lb) 

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

Fig 2: Exploded View Of Oil Pump
G11574007Courtesy of SUBARU OF AMERICA, INC.