Engine Control Module (ECM) Diagnostic Trouble Codes (Xc) - 6 of 9: Adjustments Volvo V70 II

Checking the camshaft adjustment

Adjust the camshaft settings.

Note. The check is carried out by using the adjustment tool on the camshafts and crankshaft in the prescribed manner.

Other information

1. To adjust the camshaft position (CMP) on 5 cylinder engines, see «Replacing the camshaft seals / variable valve timing unit»(ref-430987-S03457253652011101900000)

1. Continue Refer to «Checking adaptation»(ref-430987-S25856941482011101900000)

Installing the crankshaft adjustment tool

Remove the starter motor mounting screws. Pull out the starter motor and put it aside.

Remove the blind cover plug from the hole for the adjustment tool.

Turn the crankshaft clockwise slightly.

Install: 9995451 . Ensure that the tool bottoms out against the cylinder block.

Scheme 680

Note. Oil the center screw before installation

Push on the variable valve timing unit/timing gear pulley on the camshaft.

Install the center screw (1) which secures the variable valve timing unit to the camshaft.

Tighten the screw slightly.

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

Turn the timing gear pulley until the screws at the oval holes are in the center position. Tighten the screws (2) slightly.

Turn the variable valve timing unit clockwise to its limit position so that the unit is in its end position. Install the upper timing cover.

Slacken off the center screw and continue turning clockwise until the timing gear pulley marking aligns with the marking on the upper timing cover.

Tighten the center screw in the variable valve timing unit. Tighten. See: Summary of tightening torques for specific components .

Scheme 681

Install

1. the timing gear pulley on the exhaust camshaft. Turn until the timing gear pulley marking aligns with the marking on the upper timing cover.
2. the 3 screws. Do not tighten.

Scheme 682

Spin the pulleys and listen for noise from the bearings.

Check that the pulley surfaces to the belt are clean and smooth.

Check the tension pulley lever and mounting.

The tension pulley lever, torque 30 Nm . The idler pulley, torque 25 Nm .

Scheme 683

Check that there is no visible leakage.

Press the tensioner/damping unit together using: 9995456 .

Position the tensioner/damping unit in the tool. Screw the tool center nut to the bottom.

Wait until it is compressed and then install a lock pin in the piston.

Note. The tensioner damping unit must be replaced if there is leakage or there is no resistance when pushed in or if it cannot be pushed in.

Install the tensioner/damping unit. Tighten to 25 Nm .

Scheme 684

Note. Variable valve timing units do not have return springs and are easily thrown out of position when the camshaft belt is installed. Check that the markings align.

Install the belt in the following order

1. the idler pulley
2. intake cam
3. exhaust cam
4. water pump
5. tension pulley.

Scheme 685

Pull the lock pin out of the tensioner/damping unit.

Scheme 686

Slacken off the 3 timing gear pulley screws slightly (applies to both timing gear pulleys).

Install the center plug in the variable valve timing unit.

Tighten, see: Summary of tightening torques for specific components .

Hold the center plug at 35 Nm at the same time as tightening the 3 x screws on the camshaft timing gear pulley to: Summary of tightening torques for specific components .

This is to ensure that the variable valve timing unit is in its end position when the timing gear pulley is tightened.

Tighten the 3 x screws on the exhaust camshaft timing gear pulley. Tighten to: Summary of tightening torques for specific components

Remove

1. «9995452»(ref-403953-S02369714572011061000000) from the rear of the camshafts
2. «9995451»(ref-403953-S26663901482011061000000) . Install new plugs with new sealing washers. Tighten. See: «Summary of tightening torques for specific components»(ref-430987-S31554061722012011900000) .

Install the deflection limiter washer on the piston rod for the tensioner/damping unit.

Scheme 687

Position the upper timing cover.

Turn the crankshaft 2 rotations. Check that the markings on the crankshaft and timing gear pulleys correspond.

Remove the upper timing cover.