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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (3.0L - Cylinder Head & VALVETRAIN - Engine Code: CATA) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Right Cylinder Head Camshaft, Removing And Installing

Right Cylinder Head Camshaft, Removing And Installing

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required 

Removal

-- Remove the affected camshaft timing chain from the camshaft, refer to CAMSHAFT TIMING CHAINS, REMOVAL FROM CAMSHAFTS .

Fig 1: Identifying Bolts -Arrows- And Fuel Rail
GWWA15-10477Courtesy of AUDI OF AMERICA, LLC

-- Remove the right cylinder head cover. Refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

NOTE:

Follow all the rules of cleanliness. Refer to FUEL SUPPLY, INJECTION SYSTEM AND CHARGING SYSTEM CLEAN WORKING CONDITIONS .

-- Remove the union nuts -1- and -2-.

-- Remove the screws -arrows- and then move the fuel rail to the side with the hoses still attached.

-- Free up the wiring harness -arrow- using the Pry Lever 80-200.

Fig 2: Identifying Wiring Harness -Arrow-
GWWA15-10476Courtesy of AUDI OF AMERICA, LLC
NOTE:

Ignore -items 1 and 2-.

-- Loosen the guide frame bolts and nuts in the sequence -17 to 1-.

Fig 3: Identifying Right Cylinder Head Guide Frame, Tightening Specifications and Sequence
GWWA15-11171Courtesy of AUDI OF AMERICA, LLC
NOTE:

Be careful of the roller rocker lever and the adjusters when Removal the camshafts.

-- Carefully remove the bearing bracket and camshafts.

Installation 

NOTE:

Replace the front cover in the cylinder head on the right side.

CAUTION:

Danger of destroying the axial bearing in the bearing bracket.

  • Install the camshaft as described with the Camshaft Fitting Tool T40094A.

Risk of contaminating lubricating system.

  • Cover any open parts in the cylinder head.
WARNING:

Danger of eye injury.

  • Wear protective eyewear.

-- Remove the sealant residue on the cylinder head and guide frame and the upper section of the oil pan, for example using a rotating plastic brush.

-- Clean the sealing surfaces; they must be free of oil and grease.

-- Lubricate the running surfaces of both camshafts.

Set up the Camshaft Fitting Tool T40094A as follows:

Fig 4: Identifying Bracket T40094/1 And Bracket T40094/2
GWWA15-10009Courtesy of AUDI OF AMERICA, LLC

-- Install the Bracket T40094/2 in -B-.

-- Install the Bracket T40094/1 in -C-.

-- Install the exhaust camshaft -1- into the Bracket T40094/1 and Bracket T40094/2.

Fig 5: Identifying Camshaft Insertion Tools T40094 And T40096
GWWA15-10147Courtesy of AUDI OF AMERICA, LLC

-- Turn the exhaust camshaft so that it can be locked with the straight-edge in the "TDC" position -arrow-.

-- Place the intake camshaft -2- into the Camshaft Fitting Tool T40094A.

Fig 6: Placing Intake Camshaft -2- Into T40094
GWWA15-11089Courtesy of AUDI OF AMERICA, LLC

-- Mount the Camshaft Fitting Tool T40096 onto the teeth of the intake camshaft so that one arm of the clamping device engages in one sprocket half.

-- Tension the clamping devise with the thumbwheel until the tooth faces align.

-- Push the exhaust camshaft -1- toward the intake camshaft -arrows- until the splines engage.

-- Make sure the camshaft is positioned correctly:

Fig 7: Identifying Notches -Arrows- On Both Camshafts
GWWA15-11169Courtesy of AUDI OF AMERICA, LLC

-- Place the bearing brackets -1- on both camshafts.

Fig 8: Placing Bearing Brackets -1- On Both Camshafts
GWWA15-11091Courtesy of AUDI OF AMERICA, LLC

-- Mount the Camshaft Fitting Tool T40095 onto the camshafts by aligning the pliers and tension with the knurled nuts -2-.

-- Tension the camshafts by tightening the nuts -3-.

-- Make sure the alignment pins -arrows- are in the cylinder head. Insert any missing alignment pins.

Fig 9: Locating Cylinder Head Alignment Pins
GWWA15-11173Courtesy of AUDI OF AMERICA, LLC
NOTE:

Note the expiration date of the sealing compound.

Fig 10: Cut Tube Nozzle At Front Marking
GWWA17-0081Courtesy of AUDI OF AMERICA, LLC

-- Cut the tube nozzle at the front marking (nozzle diameter: approximately 1.5 mm).

NOTE:

The guide frame is shown without the camshafts.

Fig 11: Sealant Beads -Arrows- Application Area On Guide Frame
GWWA15-11170Courtesy of AUDI OF AMERICA, LLC

-- Turn the guide frame around.

CAUTION:

The lubrication system could be plugged with excess sealant.

  • Do not apply sealant beads thicker than specified.

-- Apply sealant beads -arrows- to the clean sealing surfaces on the guide frame as shown in the illustration.

NOTE:

The guide frame must be installed within 5 minutes after applying the sealant.

CAUTION:

The engine could be damaged.

  • Make sure all the roller rocker levers are seated correctly on the valve stem ends and the adjusters.

-- Mount the guide frame together with both camshaft and the Camshaft Fitting Tool T40095 to the cylinder head.

Fig 12: Identifying Right Cylinder Head Guide Frame, Tightening Specifications and Sequence
GWWA15-11171Courtesy of AUDI OF AMERICA, LLC

-- Tighten the guide frame bolts, refer to Figure.

-- Remove the Camshaft Fitting Tool T40095 and Camshaft Fitting Tool T40096.

NOTE:

After Installation the guide frame, let the sealant harden for approximately 30 minutes.

Install in reverse order of removal. Note the following:

-- Install the fuel rail and the high pressure lines. Refer to HIGH PRESSURE LINES, INSTALLING .

-- Install the right cylinder head cover. Refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Install the new cover with a suitable drift so that it is flush.

-- Install the camshaft timing chains. Refer to CAMSHAFT TIMING CHAINS, REMOVAL FROM CAMSHAFTS .

CAUTION:

Risk of damaging valves and piston heads after working on valve train.

  • The motor must not be started for about 30 minutes after Installation camshafts because the hydraulic equalization elements must seat themselves.
  • To ensure valves do not strike pistons when starting, carefully rotate engine at least 2 full revolutions.