Installing the variable valve timing (VVT) unit on the exhaust camshaft
The purpose of the "Installing the VVT unit/timing gear pulley" section described here is to ensure that the VVT unit is correctly positioned and to reset the timing gear pulley to the correct position using the markings made at the factory. This is to ensure that the conditions are correct for any later fault-tracing.
Slacken off, but do not remove, the screws which secure the timing gear pulley to the variable valve timing unit.
Press the timing gear pulley and variable valve timing (VVT) unit on to the camshaft.
Install the center screw which secures the variable valve timing unit to the camshaft. Tighten slightly.
Turn the variable valve timing unit counter-clockwise as far as it will go.
Remove the center screw.
Position the upper timing cover.
Turn the timing gear pulley clockwise until the screws at the oval holes are in the limit position.
Continue turning clockwise until the timing gear pulley marking is 1 tooth before the marking on the upper timing cover.
Do not turn anti-clockwise during this procedure.
Check that the timing gear pulley is still in the limit position in the oval holes.
Tighten the center screw in the VVT unit. See Summary of specific components and tightening torques .
Check that the variable valve timing unit does not rotate when tightening.
Tighten the center plug. See Summary of specific components and tightening torques .
Turn the variable valve timing unit clockwise to the limit position.
Turn the timing gear pulley so that the markings correspond.