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 line, refer to HIGH PRESSURE PIPE, REMOVING AND INSTALLING .

-- Remove the affected camshaft timing chain from camshafts, refer to REMOVING .

-- Remove the noise insulation -arrow-.

Fig 1: Removing Noise Insulation

Courtesy of AUDI OF AMERICA, LLC

-- Remove the camshaft locating tool T40264/3.

Fig 2: Identifying Camshaft Locating Tool T40264/3

Courtesy of AUDI OF AMERICA, LLC

Fig 3: Turning Crankshaft 40 Degrees

Courtesy of AUDI OF AMERICA, LLC

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 Wrench - 21 mm T40263 and Crankshaft Turning Tool T40272 in direction of -arrow-.

Cylinder Bank 1 (Right):

Fig 4: Removing Bolts And Pressing Fuel Line Forward

Courtesy of AUDI OF AMERICA, LLC

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

NOTE: Do not change the shape of the fuel line.

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

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

Fig 5: Disconnecting Connectors And Free Up Wiring Harness

Courtesy of AUDI OF AMERICA, LLC

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

Fig 6: Locating Camshaft Adjuster Bolts

Courtesy of AUDI OF AMERICA, LLC

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

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

-- Tighten the bolt -1- by hand.

Fig 7: Positioning Wrench - Camshaft T40269 Onto Camshaft Adjuster For Right Exhaust Camshaft And Counterhold With Wrench

Courtesy of AUDI OF AMERICA, LLC

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

-- Remove the left bolt -left arrow- from the camshaft locating tool T40264/1.

Fig 8: Locating Right Bolt -Right Arrow- On Camshaft Locating Tool T40264/1

Courtesy of AUDI OF AMERICA, LLC

-- Release the wrench.

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

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

Fig 9: Positioning Wrench - Camshaft T40269 Onto Camshaft Adjuster For Right Intake Camshaft And Counterhold With Wrench

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -1- by hand.

NOTE: To loosen the bolt for the camshaft locating tool 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 camshaft locating tool T40264/1.

Fig 10: Locating Right Bolt -Right Arrow- On Camshaft Locating Tool T40264/1

Courtesy of AUDI OF AMERICA, LLC

-- Release the wrench.

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

-- Remove the camshaft locating tool T40264/1.

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

Fig 11: Locating Camshaft Adjuster Bolts

Courtesy of AUDI OF AMERICA, LLC

Cylinder Bank 2 (Left):

Fig 12: Identifying Exhaust Camshaft Adjustment Valve 1 -N318- And Camshaft Adjustment Valve 2 -N208-

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors:

3 -

for Exhaust Camshaft Adjustment Valve 2 -N318-

4 -

for Camshaft Adjustment Valve 2 -N208-

-- Move the electrical wiring harness to the side.

NOTE: Ignore -1 and 2-.

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

Fig 13: Removing Bolts And Move Adjusting Element Vacuum Pipe To Side

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Do not remove ball head -2-.

Ignore -1-.

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

Fig 14: Removing Bolts And Press Fuel Line Forward

Courtesy of AUDI OF AMERICA, LLC

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, 2-.

Fig 15: Removing Bolts By Counterholding With Wrench And Wrench - Camshaft T40269

Courtesy of AUDI OF AMERICA, LLC

-- Position the Wrench - Camshaft 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 camshaft locating tool T40264/2, the intake camshaft must be secured from turning.

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

Fig 16: Positioning Wrench - Camshaft T40269 Onto Camshaft Adjuster For Left Intake Camshaft And Counterhold With Wrench

Courtesy of AUDI OF AMERICA, LLC

-- Remove the left bolt -left arrow- from the camshaft locating tool T40264/2.

Fig 17: Locating Right Bolt -Right Arrow- On Camshaft Locating Tool T40264/2

Courtesy of AUDI OF AMERICA, LLC

-- Release the wrench.

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

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

Fig 18: Positioning Wrench - Camshaft T40269 Onto Camshaft Adjuster For Left Exhaust Camshaft And Counterhold With Wrench

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -1- by hand.

NOTE: To loosen the bolt for the camshaft locating tool 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 camshaft locating tool T40264/2.

Fig 19: Locating Right Bolt -Right Arrow- On Camshaft Locating Tool T40264/2

Courtesy of AUDI OF AMERICA, LLC

-- Release the wrench.

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

-- Remove the camshaft locating tool T40264/2.

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

Fig 20: Removing Bolts By Counterholding With Wrench And Wrench - Camshaft T40269

Courtesy of AUDI OF AMERICA, LLC

Continuation for Both Cylinder Banks:

Fig 21: Tightening Specification And Sequence For Camshaft Housing

Courtesy of AUDI OF AMERICA, LLC

-- Loosen and remove the bolts in the following sequence: -22 to 1-.

NOTE:

The left camshaft housing is shown.

Proceed in the same way with right camshaft housing.

-- Screw in the M6 x 30 bolts evenly into the threaded openings -arrows- to carefully loosen the camshaft housing out of the bonding.

Fig 22: Locating Bolts

Courtesy of AUDI OF AMERICA, LLC

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.