Camshaft Adjuster Valves

Camshaft Adjuster Valves

Special tools, testers and auxiliary items required

• Socket Wrench (T10072)

• TORX Bit Set (V.A.G 1766)

• Torque Wrench (5-60 Nm) (V.A.G 1783)

• Ratchet Insert 1/4" (VAS 6234)

• Silicone Adhesive Sealant (D 176 501 A1)

• Sealant (D 454 300 A2)

Removing

- Remove the upper intake manifold. Refer to => [ Upper Intake Manifold ] Upper Intake Manifold.

- Remove the cylinder head cover. Refer to => [ Cylinder Head Cover ] Service and Repair.

• Mark the connector assignment to the component before disconnecting the connectors.

- Disconnect the following connectors:

• Camshaft adjustment valve 1

• Exhaust camshaft adjustment valve 1

• Camshaft position sensor

• Camshaft position sensor 2

- Free up the wiring harness.

- Remove the nut - A - the bolts - arrows - and bracket.






- Remove the vacuum pump. Refer to => [ Mechanical Vacuum Pump ] Mechanical Vacuum Pump.

- Remove the bolts - arrows - from the cover and pry off the cover.






• Carefully cover the lower chain compartment so no parts can fall in.

• Do not completely remove the camshaft adjustment valve bolts so that valve is not tilted when removed.

- Loosen the camshaft adjustment valve bolts - arrows - approximately 3 mm (5 turns) using the socket wrench (T10072).






- Pull the camshaft adjustment valve out of the seal seat in the control housing against the loosened bolts.

- Completely remove the bolts and remove the camshaft adjustment valve from the control housing.

Installing

• The valve seat in the control housing must not be scored or scratched.

• The camshaft adjustment valves and control housing must be free of dust and contamination.

• The camshaft adjustment valves must not be subjected to knocks or impacts.

• Only remove the new camshaft adjustment valve from its packaging right before installation.

• Camshaft adjustment valves must not be pulled into the valve seat by the bolts. Only press them in by hand.

- Lubricate the seal with clean engine oil.

- Carefully install the camshaft adjustment valve into the housing and press it in perpendicular to the valve axis by hand until it stops.

- Tighten the bolts - arrows - to 3.8 Nm.






- Clean the sealing surfaces on the cover and on the cylinder head.

- If replacing the seals in the cover, refer to => [ Cover Seal, Installing ] Service and Repair.

- Apply a thin bead of silicone adhesive sealant (D 176 501 A1) to the sealing surfaces on the cover.

- Install the cover and tighten the bolts - arrows - by hand.






- Then, tighten all the bolts to specifications, refer to => [ Cylinder Head Overview ] Cylinder Head Overview.

- Install the vacuum pump. Refer to => [ Mechanical Vacuum Pump ] Mechanical Vacuum Pump.

- Install the cylinder head cover. Refer to => [ Cylinder Head Cover ] Service and Repair.

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