Camshaft, Removing And Installing: Removing

-- Remove the affected ignition coils. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Remove the affected high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .

-- Remove the affected high pressure pipe. Refer to HIGH PRESSURE PIPE, REMOVING AND INSTALLING .

-- Remove the affected camshaft timing chain from camshafts. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .

-- Remove the noise insulation -arrow-.

-- Remove the :T40264/3 .

CAUTION:

Risk of damaging valves and piston crowns.

In the course of the following steps, the crankshaft must not stand with any piston at "TDC".

-- Turn the crankshaft 40° opposite engine rotation out of the "TDC" position using the :T40263 and :T40272 -arrow-.

Cylinder Bank 1 (Right):

NOTE:

Do not change the shape of the fuel line.

-- Remove the right coolant pipe. Refer to RIGHT COOLANT PIPE, REMOVING AND INSTALLING .

-- Remove the bolts -arrows- and press the fuel line -1- forward.

-- Disconnect the connectors -1 and 2- and free up the wiring harness.

-- Attach both of the camshaft adjusters without camshaft timing chains to the cylinder head and then loosely screw on the bolts -1 and 2-.

-- Position the :T40269 onto the camshaft adjuster for the right exhaust camshaft and counterhold with a wrench -2-.

-- Tighten the bolt -1- by hand.

NOTE:

To loosen the bolt for the :T40264/1 , the exhaust camshaft must be secured from turning.

-- Hold the exhaust camshaft in position with the wrench.

-- Remove the left bolt -left arrow- from the :T40264/1 .

-- Release the wrench.

When doing this, the exhaust camshaft turns to the right one turn.

-- Position the :T40269 onto the camshaft adjuster for the left intake camshaft and counterhold with a wrench -2-.

-- Tighten the bolt -1- by hand.

NOTE:

To loosen the bolt for the :T40264/1 , the intake camshaft must be secured from turning.

-- Hold the intake camshaft in position with the wrench.

-- Remove the right bolt -right arrow- from the :T40264/1 .

-- Release the wrench.

When doing this, the intake camshaft turns to the right one turn.

-- Remove the :T40264/1 .

-- Remove the bolts -1 and 2- by counterholding with the wrench and the :T40269 . Remove the camshaft adjuster.

Cylinder Bank 2 (Left)

-- Disconnect the connectors:

3 - For Exhaust Camshaft Adjustment Valve 1 -N318-

4 - For Camshaft Adjustment Valve 2 -N208-

-- Move the electrical wiring harness to the side.

NOTE:

Ignore items -1 and 2-.

-- Remove the bolts -arrows- and move the adjusting element vacuum pipe to the side.

NOTE:

The illustration shows the Installed position on an Audi S6/S7.

Do not remove ball head -2-.

Ignore item -1-.

-- Remove the bolts -arrows- and press the fuel line forward.

NOTE:

Do not change the shape of the fuel line.

-- Attach both of the camshaft adjusters without camshaft timing chains to the cylinder head and then loosely screw on the bolts -1 and 2-.

-- Position the :T40269 onto the camshaft adjuster for the left intake camshaft and counterhold with a wrench -2-.

-- Tighten the bolt -1- by hand.

NOTE:

To loosen the bolt for the :T40264/2 , the intake camshaft must be secured from turning.

-- Hold the intake camshaft in position with the wrench.

-- Remove the left bolt -left arrow- from the :T40264/2 .

-- Release the wrench.

When doing this, the intake camshaft turns to the right one turn.

-- Position the :T40269 onto the camshaft adjuster for the left exhaust camshaft and counterhold with a wrench -2-.

-- Tighten the bolt -1- by hand.

NOTE:

To loosen the bolt for the :T40264/2 , the exhaust camshaft must be secured from turning.

-- Hold the exhaust camshaft in position with the wrench.

-- Remove the right bolt -right arrow- from the :T40264/2 .

-- Release the wrench.

When doing this, the exhaust camshaft turns to the right one turn.

-- Remove the :T40264/2 .

-- Remove the bolts -1 and 2- by counterholding with the wrench and the :T40269 . Remove the camshaft adjuster.

Continuation for Both Cylinder Banks:

-- Loosen and remove the bolts in the following sequence: -21 to 1-.

-- Carefully loosen the camshaft housing from the bonding, for this turn the M6x30 bolts evenly in the threaded holes -arrows-.

NOTE:

The left camshaft housing is shown in the illustration.

Proceed in the same way with right camshaft housing.

-- Mark the assignment of the camshafts for installation later.

-- Remove the camshafts and place them on a clean surface.