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Home >> Subaru >> 2023 >> Ascent Premium >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> Intake Manifold Assembly >> Installation
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Intake Manifold Assembly: Installation

  1. Install the cylinder head plate to the cylinder head.
    G16384012Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel pipe protector stay.

    Tightening torque: 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G13198184Courtesy of SUBARU OF AMERICA, INC.
  3. Set a new gasket and install the intake manifold assembly.
    NOTE: Be careful not to let the engine wiring harness be caught by the parts.

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb)

    G13619549Courtesy of SUBARU OF AMERICA, INC.
  4. Set a new gasket, and install the stud bolts using TORX® E5.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

    G13198181Courtesy of SUBARU OF AMERICA, INC.
  5. Temporarily attach the EGR pipe No. 2 and tighten it in order of.

    Tightening torque: 

    9 N.m (0.9 kgf-m, 6.6 ft-lb)

    Fig 1: EGR Pipe No. 2 Nuts Tightening Sequence
    G14600919Courtesy of SUBARU OF AMERICA, INC.
  6. Install the PCV hose. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>PCV HOSE>INSTALLATION .
  7. Install the harness stay.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

  8. Install the clip (A) and clip (B) to the harness stay.
    G14600909Courtesy of SUBARU OF AMERICA, INC.
  9. Connect the connector (A).
  10. Install the clip (B) and clip (C).
    G14600908Courtesy of SUBARU OF AMERICA, INC.
  11. Install the clip (D) and clip (C).
  12. Connect the fuel delivery pipe (B). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>INSTALLATION>QUICK CONNECTOR CONNECTION (TYPE B) .
  13. Connect the connector (A).
    G13198178Courtesy of SUBARU OF AMERICA, INC.
  14. Install the fuel pipe protector No. 2.

    Tightening torque: 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G13198177Courtesy of SUBARU OF AMERICA, INC.
  15. Temporarily attach the fuel pipe protector No. 1, and tighten the bolts securing the A/C compressor in numerical order as shown in figure.

    Tightening torque: 

    25 N.m (2.5 kgf-m, 18.4 ft-lb)

    Fig 2: Fuel Pipe Protector No. 1 Bolts Tightening Sequence
    G16384022Courtesy of SUBARU OF AMERICA, INC.
  16. Install the V-belts. Ref. to MECHANICAL (H4DOTC)>V-BELT>INSTALLATION>V-BELT .
  17. Set the engine wiring harness and secure the engine wiring harness to the bracket with the claw.
    G16438435Courtesy of SUBARU OF AMERICA, INC.
  18. Install the engine wiring harness to the clip (A), and connect the connector (B).
  19. Connect the connector (C) and connector (D) in numerical order shown in figure.
    G16438457Courtesy of SUBARU OF AMERICA, INC.
  20. Secure the battery cable assembly with the claw (B) and clip (A).
    G13198173Courtesy of SUBARU OF AMERICA, INC.
  21. Install the V-belt cover bracket and install the connector (A).

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

    G13866635Courtesy of SUBARU OF AMERICA, INC.
  22. Secure the battery cable assembly with the clip (A) and clip (B).
  23. Connect the connector (C), connector (D), connector (E), and the terminal (F).

    Tightening torque: 

    15.5 N.m (1.6 kgf-m, 11.4 ft-lb)

    G13866663Courtesy of SUBARU OF AMERICA, INC.
  24. Install the V-belt cover.
    NOTE:
    • Check the grommet for peel-off or disengagement.
    • Be careful not to deform the bracket during installation.

    Tightening torque: 

    7 N.m (0.7 kgf-m, 5.2 ft-lb)

  25. Connect the evaporation hose (E).
  26. Install the fuel delivery tube clamp (D).
  27. Connect the fuel delivery tube (C). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>INSTALLATION>QUICK CONNECTOR CONNECTION (TYPE A) .
  28. Connect the connector (A) and connector (B).
    G16383996Courtesy of SUBARU OF AMERICA, INC.
  29. Connect the PCV pipe assembly to the intake duct No. 1, and lock it.
    CAUTION:
    • Make sure there are no damage or dust on connections. If necessary, clean the seal surface of the pipe.
    • Confirm that the connections are secure.
    NOTE: It is possible to install with the spring locked.
    G13619535Courtesy of SUBARU OF AMERICA, INC.
  30. Connect the vacuum hose.
    G13198169Courtesy of SUBARU OF AMERICA, INC.
  31. Install the PCV pipe to the intake manifold assembly.
  32. Secure the clip (D), and connect the connector (C).
  33. Secure the clip (B), and connect the connector (A).
    G13619533Courtesy of SUBARU OF AMERICA, INC.
  34. Install the throttle body. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>THROTTLE BODY>INSTALLATION .
  35. Install the intake duct No. 2. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTAKE DUCT>INSTALLATION>INTAKE DUCT NO. 2 .
  36. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  37. Install the fuel filler cap, and close the fuel filler lid.
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