Monday, March 5, 2012

Replace Cylinder Head on Acura?


Cylinder Head
REMOVAL & INSTALLATION

The details are as follows :-----

  1. Before servicing the vehicle, refer to the precautions section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable
    Ignition coil covers
    Intake manifold cover
    Air intake tube
    Accelerator cable
    Cruise control cable
    EVAP canister, breather, water bypass hoses and the bypass pipe bolt
    Fuel lines
    Brake booster vacuum line
    Intake manifold vacuum line
    Positive Crankcase Ventilation (PCV) valve and hose
    Power steering hose clamp
    Intake Manifold Runner Control (IMRC) actuator
    Wiring harness holder and joint connector
  5. Support the engine with a jack and a block of wood.

    Side engine mount bracket
    Accessory drive belts
    Power steering pump
    Alternator
    Intake Air Temperature (IAT) sensor connector
    Idle Air Control (IAC) valve connector
    Throttle Position (TP) sensor connector
    Manifold Absolute Pressure (MAP) sensor connector
    Evaporative Emission (EVAP) canister purge valve connector
    Engine Coolant Temperature (ECT) sensor connector
    Radiator fan switch connectors
    ECT gauge sending unit connector
    Crankshaft Position (CKP) sensor connector
    Top Dead Center (TDC) sensor connector
    Exhaust Gas Recirculation (EGR) connector
    Variable Valve Timing and Valve Lift Electronic Control (VTEC) solenoid valve connector
    VTEC oil pressure switch connector
    Oil pressure switch connector
    Ignition coils
    Intake manifold
    Fuel injector connectors
    Fuel supply manifold
    Fuel injection air control valve vacuum lines
    Front cover
    Timing belt
    Radiator hoses
    Heater hoses
    Front and rear exhaust manifolds
    Coolant cross-over pipe
    Valve covers
  6. Loosen the cylinder head bolts in sequence and 1 / 3 turns until all bolts are loose.
  7. Remove the cylinder head. 

    image
    Fig. Cylinder head bolt loosening sequence-MDX
To install:
Click image to see an enlarged view
Fig. Crankshaft timing belt sprocket TDC marks. Align sprocket mark (A) with pointer (B)-MDX


Click image to see an enlarged view
Fig. Camshaft TDC marks. Align sprocket mark (A) with the back cover pointer (B)-MDX
  1. Align the crankshaft and camshaft sprocket TDC marks as shown.
  2. Install the cylinder heads with new gaskets.
  3. Apply clean engine oil to the cylinder head bolt threads and flanges.

    Click image to see an enlarged view
    Fig. Cylinder head bolt tightening sequence-MDX
  4. Tighten the cylinder head bolts in sequence as follows:
    1. Step 1: 29 ft. lbs. (39 Nm).
    2. Step 2: 51 ft. lbs. (69 Nm).
    3. Step 3: 72 ft. lbs. (98 Nm).
  5. Install or connect the following:

    Valve covers
    Coolant cross-over pipe
    Front and rear exhaust manifolds
    Heater hoses
    Radiator hoses
    Timing belt
    Front cover
    Fuel injection air control valve vacuum lines
    Fuel supply manifold
    Fuel injector connectors
    Intake manifold
    Ignition coils
    Oil pressure switch connector
    VTEC oil pressure switch connector
    VTEC solenoid valve connector
    EGR connector
    TDC sensor connector
    CKP sensor connector
    ECT gauge sending unit connector
    Radiator fan switch connectors
    ECT sensor connector
    MAP sensor connector
    TP sensor connector
    IAC valve connector
    IAT sensor connector
    Alternator
    Power steering hose clamp
    Power steering pump
    Side engine mount bracket
    PCV valve and hose
    Intake manifold vacuum line
    Brake booster vacuum line
    Fuel lines
    Cruise control cable
    Accelerator cable
    Intake manifold cover
    Ignition coil covers
    Accessory drive belts
    Air intake tube
    EVAP control canister hose and vacuum hose
    Negative battery cable
  6. Fill the cooling system.
  7. Start the engine and check for leaks.

This will help.
Thanks.



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