2019 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Pipe Assembly: Installation

CAUTION: Install the under cover - front so that the front end of the under cover (b) comes inside the bumper face - front (a).
G13262236Courtesy of SUBARU OF AMERICA, INC.
  1. Temporarily tighten the hose bracket bolt.
    G13262237Courtesy of SUBARU OF AMERICA, INC.
  2. Install the plastic clip to the pressure hose and suction hose.
    CAUTION: Align the installation position of the plastic clip with the protector edge of the suction hose.
    G13262238Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the suction hose and return hose to the reservoir tank.
    CAUTION: Firmly insert the plastic clip of return hose to the bracket.
    G13262239Courtesy of SUBARU OF AMERICA, INC.
  4. Tighten the hose bracket bolt.

    Tightening torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

  5. Connect the suction hose and pressure hose to the oil pump. Tighten the eyebolt of pressure hose.

    Tightening torque: 

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

    G13262240Courtesy of SUBARU OF AMERICA, INC.
  6. Temporarily connect the pressure hose to feed pipe and return hose to return pipe. Temporarily tighten the bolt of clamp E.
    G13262241Courtesy of SUBARU OF AMERICA, INC.
    NOTE: Make sure that the character "8" on each clamp is positioned on the opposite side, as shown in the figure.
    G13262242Courtesy of SUBARU OF AMERICA, INC.
  7. Tighten clamp E.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

  8. Tighten the pressure hose to feed pipe and return hose to return pipe.

    Tightening torque: 

    15 N.m (1.5 kgf-m, 11.1 ft-lb)

  9. Connect pipes A and B to the four pipe joints of the gearbox.

    Tightening torque: 

    Cylinder side: 27 N.m (2.8 kgf-m, 19.9 ft-lb)

    Gear housing side: 17 N.m (1.7 kgf-m, 12.5 ft-lb)

    G13262243Courtesy of SUBARU OF AMERICA, INC.
  10. Install the front crossmember support plate and jack-up plate.
  11. Install the under cover. Refer to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>INSTALLATION .
  12. Lower the vehicle.
  13. Tighten the bolts which hold the hose bracket.

    Tightening torque: 

    10 N.m (1 kgf-m, 7.4 ft-lb)

    G13262244Courtesy of SUBARU OF AMERICA, INC.
  14. Install the air intake duct. Refer to INTAKE (INDUCTION) (STI)>AIR INTAKE DUCT>INSTALLATION .
  15. Connect the battery ground terminal.
  16. Fill with the specified fluid.
    CAUTION: Never start the engine before filling with fluid; otherwise the vane pump may become seized.
  17. Finally, check the clearance between pipes or hoses as shown in the figure indicated in "General Diagnostic Table". Refer to POWER ASSISTED SYSTEM (POWER STEERING)>GENERAL DIAGNOSTIC TABLE>INSPECTION>CLEARANCE CHECK (HYDRAULIC TYPE) .
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.