CAMSHAFT ADJUSTMENT VALVE 1 Camshaft Adjustment Valve 1 -N205- AND EXHAUST CAMSHAFT ADJUSTMENT VALVE 1 Exhaust Camshaft Adjustment Valve 1 -N318-, REMOVING AND INSTALLING

Special tools and workshop equipment required 

• Torque Wrench 1783 - 2-10Nm:V.A.G 1783 
• Torx Bit Set:V.A.G 1766 
• Torque Wrench 1783 - 1/4" Drive Ratchet:VAS 6234 
• Wrench - Driver:T10072 
• Applicator Gun:VAS 6966 

  Courtesy of AUDI OF AMERICA, LLC

Not illustrated:

Special tools and workshop equipment required 

• Sealant:D 176 501 A1 
• Sealant:D 454 300 A2 

Removing

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Disconnect the following connectors.

1. Camshaft Position Sensor -G40-
2. Camshaft Adjustment Valve 1 -N205-
3. Camshaft Position Sensor 3 -G300-
4. Exhaust Camshaft Adjustment Valve 1 -N318-

-- Free up the wiring harness.

-- Remove the coolant pipes from the cover.

-- Remove the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

-- Remove the three bolts from the cylinder head cover -arrows-.

-- Remove the upper and lower coolant pipes from the cover.

-- Remove the cover -arrows- from the cylinder head.

-- Carefully cover the lower chain guard to keep other parts from falling inside.

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

-- Remove the bolts from the camshaft adjustment valves using Wrench - Driver:T10072  approximately 3 mm (5 turns) -arrows-.

-- Pull the Camshaft Adjustment Valve --, against the loosened bolts, from the control housing seal.

-- Remove the bolts and pull the Camshaft Adjustment Valve -- out of 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.
• Remove the new camshaft adjustment valves from their packaging just before installing them.
• Camshaft adjustment valves must not be pulled into valve seat with the bolts. Only press them in by hand.

-- Coat the sealing ring with clean engine oil.

-- Install the Camshaft Adjustment Valve -- carefully into the housing and push it all the way in by hand perpendicular to the valve axle.

-- Tighten the fastening bolts -arrows- to 3.8 Nm.

-1- Camshaft Adjustment Valve 1 -N205-.

-2- Exhaust Camshaft Adjustment Valve 1 -N318-.

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

-- Check the seals on the camshaft adjuster valves and replace them if necessary. Refer to CAMSHAFT ADJUSTER VALVE SEAL, REMOVING AND INSTALLING .

-- Make sure the seal -arrows- fits correctly inside the cylinder head cover.

-- Remove any remaining sealant on -A-.

-- Apply a thin bead of Sealant:D 176 501 A1  on the clean sealing surface of the cover.

-- Place a little Sealant:D 454 300 A2  on the locations marked on the cover.

-- Push the cover - slightly tilted - onto the camshaft adjustment valves. Make sure the cylinder head cover seal is not pressed back.

1. Push the cover upward, under the cylinder head cover gasket.
2. Push the cover against the cylinder head and onto the alignment pins.

-- Make sure the seal -arrows- is seated correctly. It must not be pushed back.

-- Install all the bolts -arrows- and tighten them just a little.

-- Tighten all the bolts.

-- Tighten the 3 cylinder head cover bolts -arrows- to the tightening specification.

-- Install the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

Further assembly is performed in reverse order.

Tightening Specifications:

• Refer to OVERVIEW - CONTROL HOUSING 
• Refer to OVERVIEW - TIMING CHAIN COVER 
• Refer to OVERVIEW - CYLINDER HEAD