Camshaft Timing Chain (without new tools)

Camshaft Timing Chain (without new tools)

Special tools, testers and auxiliary items required

• Counter Hold Tool (T10355)

• Assembly Tool (T10352)

• Locking Pin (T40011)

• Thrust Piece (T10368)

• Torque Wrench (5-50 Nm) (V.A.G 1331)

Removing

- Remove the upper timing chain cover. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.

- Rotate the vibration damper to the Top Dead Center (TDC) position - arrow - using the counter hold tool (T10355).






• The notch on the vibration damper must line up with the arrow mark - arrow - on the lower timing chain cover.

• The marks - 1 - on the camshafts must point upward.

- Remove the lower timing chain cover, refer to the following:

• Passat and CC, refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.

The control valve has left hand threads.

- Remove the control valve in the - direction of the arrow - using the assembly tool (T10352).






- Remove the bolts - arrows - and remove the bearing bracket.






- Press the oil pump chain tensioner in the - direction of the arrow - and secure it using the locking pin (T40011).






- Remove the oil pump chain tensioner guide pin - 1 -.

- Remove the oil pump chain tensioner.

The locking wedge in the chain tensioner must be lifted in order to release the tension from the chain tensioner. Sand the end of the locking pin (T40011) down to a point. A screwdriver with a head approximately 1.5 mm wide can also be used.

There is a risk of damaging the chain tensioner. Proceed very carefully.

- Lift the chain tensioner locking wedge in the - direction of arrow 1 -, press the timing chain tensioning rail in the - direction of arrow 2 - and secure it using the locking pin (T40011).






- Remove the timing chain tensioning rail guide pin - 2 - and tensioning rail.






• The intake camshaft switches in the engine rotation direction.

- Remove the timing chain guide rail guide pins - 1 - and guide rail.

- Remove the timing chain.

Installing

• Tightening specifications, refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.

• The chain tensioner for the tensioning rail is installed and secured with the locking pin (T40011).

• The sprocket for the crankshaft is secured using the thrust piece (T10368).

• The following procedure must be performed in one step. A second technician is needed.

• The painted links on the timing chain must be positioned on the marks on the sprockets.

• Hold the wrench tight until the tensioning rail and guide rail are installed.

- Position the crankshaft to TDC, as shown in the illustration. It is in TDC when the marks on the balance shafts are aligned with the balance shaft bolts.

• The marks must match up with the painted chain links each 16th turn.






- Mount the timing chain on the exhaust camshaft. Align the colored chain links with the marks.






- Mount the timing chain on the crankshaft. Align the colored chain link with the mark.

- Rotate the intake camshaft using the wrench in the - direction of the arrow - and mount the timing chain. Continue to hold the camshaft with the wrench.

- Install the timing chain tensioning rail and tighten the guide pin - 2 -.






- Install the timing chain guide rail and tighten the guide pins - 1 -.

- Install the bearing bracket and tighten the bolts - arrows - hand tight.






- Remove the locking pin (T40011) from the chain tensioner.

- Tighten the bolts - arrows - to specification, refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.

The rest of the installation is basically a reverse of the removal sequence.