Removal & Installation
- Before servicing the vehicle, refer to the Precautions Section. Also see the IMA system disabling before proceeding with any procedure.
- Drain the cooling system and engine oil.
- Relieve the fuel system pressure.
Remove or disconnect the following:
Negative and then positive battery cables
- Hold the camshaft with an open end wrench, then remove the camshaft sprocket bolt.
- Remove the camshaft sprocket.
- Remove the engine mount bracket bolt on the cylinder head side.
- Loosen the cylinder head bolts in sequence and 1 / 3 turns until all bolts are loose.
Remove the cylinder head.
- Clean the cylinder head and block mating surfaces.
- Ensure the crankshaft pulley is at TDC.
Apply liquid gasket to the areas of the engine block as shown.
- Install the cylinder head.
- Coat the cylinder head bolt threads with clean engine oil.
- Tighten the cylinder head bolts in the sequence shown to 29 ft. lbs. (39 Nm), plus an additional 90 degrees.
- Tighten the 6 mm bolts (A) to 105 inch lbs. (12 Nm).
- Install the timing chain on the camshaft sprocket and place the sprocket on the camshaft.
- Turn the camshaft sprocket counterclockwise to relieve the free play and check that the TDC mark on the sprocket lines up with the cylinder head surface.
- If the mark is not aligned correctly, remove the sprocket from the camshaft and reposition the timing chain until the mark is aligned.
- Hold the camshaft with an open end wrench and tighten the sprocket bolt to 41 ft. lbs. (56 Nm).
- Install a new cylinder head plug.
- Press the rod to pump the oil out of the timing chain tensioner.
- Install a new o-ring to the tensioner spacer and a new gasket on the tensioner and then tighten the bolts and nuts equally to 105 inch lbs. (12 Nm), while pressing the tensioner against the head.
- Adjust the valve clearance.
- The remainder of the installation is the reverse of the removal procedure.
- Start the engine and hold at 3500 rpm with no load for 10 minutes.
- Check that the IMA battery level indicator reads full.
- Check the engine idle.