LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2012 >> Ridgeline RTL >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head >> Cylinder Head Removal

Cylinder Head Removal

NOTE:
  • Use fender covers to avoid damaging painted surfaces.
  • To avoid damaging the wiring and terminals, unplug the wiring connectors carefully while holding the connector portion.
  • Connect the HDS to the DLC, and monitor the ECT sensor 1. To avoid damaging the cylinder head, wait until the ECT drops below 100 °F (38 °C) before loosening the cylinder head bolts.
  • Mark all wiring and hoses to avoid mis-connection. Also, be sure that they do not contact any other wiring or hoses, or interfere with any other parts.
  1. Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).
  2. Do the battery terminal disconnection procedure (see BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
  3. Drain the engine coolant (see COOLANT CHECK ).
  4. Remove the drive belt (see DRIVE BELT INSPECTION ).
  5. Remove the alternator (see ALTERNATOR REMOVAL AND INSTALLATION ).
  6. Remove the power steering pump (A) and the power steering hose bracket (B) with its hoses connected.
    Fig 1: Identifying Power Steering (P/S) Pump And Bolt
    G05964078Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Remove the intake manifold (see INTAKE MANIFOLD REMOVAL AND INSTALLATION ).
  8. Remove the six ignition coils (see IGNITION COIL REMOVAL/INSTALLATION ).
  9. Remove the timing belt (see TIMING BELT REMOVAL ).
  10. Remove the cylinder head covers (see CYLINDER HEAD COVER REMOVAL ).
  11. Remove the following engine wire harness connectors and wire harness clamps from the cylinder head:
    • Six injector connectors
    • Engine coolant temperature (ECT) sensor 1 connector
    • Oil pressure switch connector
    • Camshaft position (CMP) sensor connector
    • Rocker arm oil control solenoid connector
    • Rocker arm oil pressure switch connector
    • Rear air fuel ratio (A/F) sensor connector
    • Rear secondary heated oxygen sensor (secondary HO2S) connector
  12. Remove the front warm up three way catalytic converter (front WU-TWC) (see WARM UP TWC REMOVAL/INSTALLATION ) and the rear warm up three way catalytic converter (rear WU-TWC) (see REAR ).
  13. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose (B) (see FUEL LINE/QUICK-CONNECT FITTING REMOVAL ).
    Fig 2: Identifying Quick-Connect Fitting Cover And Fuel Feed Hose
    G05964079Courtesy of AMERICAN HONDA MOTOR CO., INC.
  14. Remove the connector bracket from the front cylinder head.
    Fig 3: Identifying Connector Bracket
    G05964080Courtesy of AMERICAN HONDA MOTOR CO., INC.
  15. Remove the harness clamp bracket from the rear cylinder head.
    Fig 4: Identifying Harness Clamp Bracket
    G05964081Courtesy of AMERICAN HONDA MOTOR CO., INC.
  16. Remove the fuel rails (see INJECTOR REPLACEMENT ).
  17. Remove the water passage (see WATER PASSAGE REPLACEMENT ).
  18. Remove the camshaft pulleys (A) and the back covers (B).

    FRONT 

    Fig 5: Identifying Camshaft Pulley (A) & Back Cover (B)
    G00511663Courtesy of AMERICAN HONDA MOTOR CO., INC.

    REAR 

    Fig 6: Identifying Front And Rear Camshaft Pulleys And Front And Rear Back Covers
    G05964082Courtesy of AMERICAN HONDA MOTOR CO., INC.
  19. Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.

    FRONT 

    Fig 7: Identifying Cylinder Head Bolts Removing Sequence - Front
    G05964083Courtesy of AMERICAN HONDA MOTOR CO., INC.

    REAR 

    Fig 8: Identifying Cylinder Head Bolts Removing Sequence - Rear
    G05964084Courtesy of AMERICAN HONDA MOTOR CO., INC.
  20. Remove the cylinder heads.
scientia non olet · About LEMON Manuals