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Section 5 (Engine Mechanical (WRX-STI)): Camshaft: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove the engine from the vehicle. < Ref. to REMOVAL , Engine Assembly. >
  2. Remove the rear side belt. < Ref. to REAR SIDE BELT , REMOVAL, V-belt. >
  3. Remove the crank pulley. < Ref. to REMOVAL , Crank Pulley. >
  4. Remove the timing belt cover. < Ref. to REMOVAL , Timing Belt Cover. >
  5. Remove the timing belt. < Ref. to REMOVAL , Timing Belt. >
  6. Remove the cam sprocket. < Ref. to REMOVAL , Cam Sprocket. >
  7. Disconnect the connector from the intake oil flow control solenoid valve.
    Fig 1: Locating Intake Oil Flow Control Solenoid Valve Connector
    G08539306Courtesy of SUBARU OF AMERICA, INC.
  8. Disconnect the connector (A) from the exhaust camshaft position sensor and the connector (B) form the exhaust oil flow control solenoid valve.
    Fig 2: Identifying Exhaust Camshaft Position Sensor Connector And Exhaust Oil Flow Control Solenoid Valve Connector
    G08539307Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the timing belt cover No. 2 RH (A) and timing belt cover No. 2 LH (B).
    NOTE: When removing the timing belt cover, be careful not to damage the seal rubber.
    Fig 3: Removing Timing Belt Cover Bolts
    G07911991Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the tensioner bracket.
    Fig 4: Locating Tensioner Bracket Bolts
    G07909879Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the clip (A) which hold the engine harness to the rocker cover RH.
    Fig 5: Identifying Rocker Cover Clip RH
    G08539164Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the air duct B (B) from the rocker cover LH and the air duct A (A).
    Fig 6: Identifying Rocker Cover LH Air Ducts
    G08539168Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the ignition coil. < Ref. to REMOVAL , Ignition Coil. >
  14. Disconnect PCV hose (A) and vacuum hose (B) from the rocker cover.
    NOTE: Pinch the clamp by fitting the cut out in the ST with the protrusion on the clamp as shown in the figure, and unlock the clamp.

    ST 18353AA000 CLAMP PLIERS

    Fig 7: Fitting Clamp Pliers (18353AA000) Cut Out To Clamp Protrusion
    G06650572Courtesy of SUBARU OF AMERICA, INC.
    Fig 8: Identifying PCV And Vacuum Hoses
    G10265245Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the rocker cover.
  16. Remove the union bolt without filter (without protrusion) which secures the oil pipe to the front camshaft cap.
    Fig 9: Identifying Oil Pipes, Gasket And Union Bolts
    G10290411Courtesy of SUBARU OF AMERICA, INC.
  17. Loosen the upper side of the front camshaft cap and the intake camshaft cap bolts equally, a little at a time in alphabetical sequence shown in the figure.
    Fig 10: Intake Camshaft Cap Bolts Loosening Sequence
    G08539315Courtesy of SUBARU OF AMERICA, INC.
  18. Loosen the lower side of the front camshaft cap and the exhaust camshaft cap bolts equally, a little at a time in alphabetical sequence shown in the figure.
    Fig 11: Front Camshaft Caps Loosening Sequence
    G08539316Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the front camshaft cap.
  20. Remove the intake camshaft caps and intake camshaft.
  21. Remove the exhaust camshaft caps and exhaust camshaft.
    NOTE: Arrange camshaft caps in order so that they can be installed in their original positions.
  22. Remove the oil seal.
    CAUTION: Do not scratch the journal surface when removing the oil seal.
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