Cylinder Head Bank 1 (Right), Removing

Special tools and workshop equipment required 

• Engine Bung Set:VAS 6122 
  Fig 1: Engine Bung Set

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• Socket:T10405 
  Fig 2: Identifying Socket T30

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Procedure

-- Remove the cylinder bank 1 (right) camshaft housing. Refer to CYLINDER BANK 1 (RIGHT) CAMSHAFT HOUSING, REMOVING AND INSTALLING .

-- Remove the right turbocharger. Refer to TURBOCHARGER, REMOVING AND INSTALLING .

-- Remove the A/C compressor from the starter generator. Refer to RIBBED BELT, REMOVING AND INSTALLING .

-- Remove the starter generator. Refer to GENERATOR, REMOVING AND INSTALLING .

-- Remove the bolt -2- and remove the coolant ventilation line -1- from the cylinder head.

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Audi A8 / S8 / RSQ8 / SQ8 / SQ7:

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-- Disconnect the connectors:

1. For the After-Run Coolant Pump -V51-
2. For the Charge Air Pressure Actuator -V465-

-- Remove the Charge Air Pressure Actuator -V465- from the bracket and free it up and move it to the side.

Audi A8 / S8:

-- Disconnect the connectors:

3 -  For the Manifold Absolute Pressure Sensor -G71-

4 -  For the Positive Crankcase Ventilation Heating Element -N79-

5 -  For the Throttle Valve Control Module -GX3-

6 -  For the Charge Air Pressure Sensor -G31-

-- Free up the wiring harness on the intake manifold.

-- Loosen the hose clamp -7- and remove the air duct hose.

Audi RSQ8 / SQ8 / SQ7:

-- Remove the right lower air duct pipe on the throttle valve control module. Refer to AIR DUCT PIPE, REMOVING AND INSTALLING .

All:

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-- Remove the bolts -2- and the remove the chain tensioner -1-.

-- Remove the guide pin -5-.

-- If the cylinder head is removed with the engine installed: push the guide rail -4- upward and secure using a cable tie to the camshaft timing chain -3- as shown.

-- Remove the bolts -arrows-.

Fig 3: Cylinder Head Bank 1 (Right) Bolts Loosening Sequence

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-- Loosen the cylinder head bolts in the sequence -1 to 10-.

-- Remove the bolts and the cylinder head carefully.

-- Lay the cylinder head on a soft surface, such as foam.

-- Seal the open channels of the intake and exhaust tract with clean cloths or with thoroughly cleaned plugs from the Engine Bung Set:VAS 6122  .