V.V.T. Sprocket

CAUTION: Never overhaul the V.V.T. sprocket.

Seal with a tape all the intake camshaft ports for the advanced angle and the retarded angle.
Make a hole on the port for the advanced angle.

Fig 1: Intake Camshaft Ports For Advanced And Retard Angle
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

CAUTION: Fix the camshaft on a vise not to damage it.
Fixing the hexagonal portion <M/T> or square portion <CVT> of the intake camshaft on a vise, install the V.V.T. sprocket.

Fig 2: Intake Camshaft Hexagonal Portion (M/T)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 3: Intake Camshaft Square Portion (CVT)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

CAUTION: When applying air pressure, keep in mind that oil could splash.
By applying air pressure slowly to the holed port for the advanced angle, remove the stopper pin.
Turn the V.V.T. sprocket housing in the right and left directions. Check it smoothly moves in the range of A (approximately 25 degree angle).
NOTE: The stopper pin is locked in the most retarded angle position.
After the check, remove the V.V.T. sprocket from the intake camshaft.
Completely remove the tape sealing the intake camshaft ports for the advanced angle and for the retarded angle.

Fig 4: VVT Sprocket And Housing Stopper Pin

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.