Variable Valve Timing Unit, Checking And Adjusting: Installing

Installing and adjusting the variable valve timing unit/timing gear pulley on the camshaft

NOTE:

This procedure must be carried out with precision as any deviation could generate a fault symptom.

Installing the crankshaft adjustment tool

Fig 1: Identifying Starter Motor

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove the starter motor mounting screws. Pull out the starter motor and put it aside. Remove the plug of the gauge hole. Rotate the crankshaft slightly clockwise. Install: 9995451 . Make sure that it bottoms against the engine block.

Aligning the crankshaft

Fig 2: Identifying Crankshaft Timing Gear Pulley & Oil Pump Alignment Marks

Courtesy of VOLVO CARS OF NORTH AMERICA.

Turn the crankshaft counterclockwise to its stop against the crankshaft adjustment tool. Check that the marking on the crankshaft timing gear pulley aligns with the marking on the oil pump.

Installing the variable valve timing unit on the camshaft

Fig 3: Identifying Variable Valve Timing Unit Center Screws And Timing Gear Pulley

Courtesy of VOLVO CARS OF NORTH AMERICA.

NOTE:

Oil the center screw before installation.

Press the variable valve timing unit/timing gear pulley onto the camshaft. Install the center screw (1) that holds the variable valve timing unit to the camshaft. Do not tighten yet .

Slacken off, but do not remove the screws (2) which secure the timing gear pulley to the variable valve timing unit.

Position the upper timing cover.

Fig 4: Identifying Timing Gear Pulley Marking Offset

Courtesy of VOLVO CARS OF NORTH AMERICA.

Turn the timing gear pulley so that the screws at the oval holes are in the limit position. Continue turning clockwise until the timing gear pulley's marking is 1 tooth before the marking on the upper timing cover.

Fig 5: Identifying Variable Valve Timing Unit Center Screws And Timing Gear Pulley

Courtesy of VOLVO CARS OF NORTH AMERICA.

Check that the timing gear pulley is still in the limit position in the oval holes.

Tighten the center screw (1) in the VVT unit to 120 Nm .

Check that the variable valve timing unit does not rotate when tightening. Install the center plug and tighten to 35 Nm .

Install the belt pulley on the exhaust camshaft : Install the belt pulley on the intake camshaft with three screws; do not tighten yet .

Check that the markings on the belt pulley and the upper timing cover align.

Installing the timing belt

Install the belt in the following order:

Fit the timing belt over the pulley on the crankshaft
the idler pulley
cam wheel, exhaust camshaft
water pump
belt tensioner.

Fig 6: Holding VVT Unit Fixed Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Turn the variable valve timing unit clockwise to the stop.

NOTE:

Hold the VVT unit fixed in the limit position clockwise when the belt if fitted.

Check that the markings on the belt pulley and the upper timing cover align.

Install the timing belt (continued)

Fig 7: Identifying Timing Belt Routing

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fit the timing belt over the intake camshaft's cam wheel.