LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2020 >> WRX Base >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Power Steering System (Service Information) >> Oil Pump >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Oil Pump: Installation

  1. Install the oil pump to bracket.
  2. Tighten the bolts which hold the oil pump to the bracket.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.8 ft-lb)

    G07663993Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    48 N.m (4.9 kgf-m, 35.4 ft-lb)

    G05343622Courtesy of SUBARU OF AMERICA, INC.
  3. Attach the installation bolts of the power steering pump bracket.

    Tightening torque: 

    Refer to "COMPONENT" of "General Description". Refer to POWER ASSISTED SYSTEM (POWER STEERING)>GENERAL DESCRIPTION>COMPONENT>OIL PUMP .

    G05343613Courtesy of SUBARU OF AMERICA, INC.
  4. Connect the pressure hose and suction hose.
    CAUTION: Be careful when installing; If the hose is twisted it may come into contact with other parts.

    Tightening torque: 

    Eyebolt 

    40 N.m (4.1 kgf-m, 29.5 ft-lb)

    G13648480Courtesy of SUBARU OF AMERICA, INC.
  5. Connect the power steering pump switch to the connector.
  6. After installing the oil pump, fill the oil pump with fluid while rotating the pulley by hand and bleed the air from the oil pump.
    CAUTION: Always fill the oil pump with the fluid to prevent abnormal noise and seizure of the oil pump.
  7. Install the V-belts (front side belt). Refer to MECHANICAL(STI)>V-BELT>INSTALLATION .
  8. Connect the battery ground terminal.
  9. Fill with the specified power steering fluid. Refer to POWER ASSISTED SYSTEM (POWER STEERING)>POWER STEERING FLUID .
    CAUTION: Never start the engine before filling with fluid; otherwise the vane pump may become seized.