Installing the variable valve timing (VVT) unit on the exhaust camshaft

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Aligning Timing Gear Pulley Marking To 1 Cog Before Marking On Upper Timing Cover

Courtesy of VOLVO CARS OF NORTH AMERICA.

Slacken off, but do not remove the screws which secure the timing gear pulley to the VVT unit
Press the variable valve timing unit and timing gear onto 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. Slacken off 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 cogs before the marking on the upper timing cover
NOTE:
Do not turn counter-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 Tightening torque . Check that the variable valve timing unit does not rotate when tightening
Install and tighten the center plug according to Tightening torque .

Fig 2: Identifying Alignment Marks

Courtesy of VOLVO CARS OF NORTH AMERICA.

Turn the variable valve timing unit clockwise to the limit position. Turn the timing gear pulley so that the markings correspond.