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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (4.2L - Cylinder Head & VALVETRAIN - Engine Code: Bar) >> 15 Cylinder Head, VALVETRAIN >> Removal And Installation >> Camshafts >> Installing

Removal And Installation: Camshafts: Installing

WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Always replace gaskets and seals.

WARNING:

Risk of eye injury.

  • Wear safety glasses.
CAUTION:

Risk of contaminating lubricating system and bearing.

  • Cover open parts of engine.

-- Remove sealant residue on cylinder head and guide frame, for example with rotating plastic brush.

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

-- Oil journal surfaces of camshafts.

-- Place camshafts in cylinder head, noting position of camshafts so that guide frame can be installed without tension.

Left Cylinder Head

Fig 1: Identifying Intake Camshaft & Exhaust Camshaft (Left Cylinder Head)
GWWA15-10250Courtesy of AUDI OF AMERICA, LLC
  1. Intake camshaft
  2. Exhaust camshaft

Right Cylinder Head

Fig 2: Identifying Intake Camshaft & Exhaust Camshaft (Right Cylinder Head)
GWWA15-10252Courtesy of AUDI OF AMERICA, LLC
  1. Exhaust camshaft
  2. Intake camshaft

Continued for Both Sides

-- Check location of compression ring ends.

NOTE:

Note the expiration date of the sealing compound.

-- Cut tube nozzle at front marking (nozzle diameter approximately 2 mm).

Fig 4: Cut Tube Nozzle At Front Marking
GWWA17-0081Courtesy of AUDI OF AMERICA, LLC

-- Lay a new seal -2- in guide frame groove.

Fig 5: Identifying Seal Beads
GWWA15-10215Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk of contaminating camshaft bearing with excess sealant.

  • Do not apply sealant beads thicker than specified.

-- Apply sealant beads -1, 3, 4- on clean guide frame sealing surfaces as shown in illustration.

-- Immediately place guide frame on cylinder head.

NOTE:

Ensure camshafts can be inserted in guide frame axial bearing without force.

-- Insert the T40116 in the guide frame and cylinder head.

Fig 6: Identifying Guide Frame Securing Pins T40116
GWWA15-10283Courtesy of AUDI OF AMERICA, LLC
NOTE:

Because the sealant begins hardening immediately, guide frame must be promptly positioned and tightened.

After the guide frame has been installed, sealant must harden approximately 30 minutes.

-- Tighten guide frame bolts. Refer to Figure.

Fig 7: Bearing Frame Tightening Sequence
GWWA15-10225Courtesy of AUDI OF AMERICA, LLC

-- Drive sealing plugs -arrows- in flush.

Fig 8: Driving Sealing Plugs In Flush
GWWA10-10503Courtesy of AUDI OF AMERICA, LLC

-- Remove the T40116 with the T10133/3.

Fig 9: Identifying Guide Frame Securing Pins T40116 With Impact Puller T10133/3
GWWA15-10284Courtesy of AUDI OF AMERICA, LLC

-- Rotate the intake camshaft to "TDC" and the tighten camshaft adjuster screw -2- on the camshaft with a 24 mm socket -1- inserted between as illustrated.

Fig 10: Identifying Intake Camshaft TDC
GWWA15-10285Courtesy of AUDI OF AMERICA, LLC
NOTE:

To tighten screw, counterhold socket with pliers if necessary.

-- Position a lever or ratchet with T10035 on screw and rotate camshaft until threaded holes for T40070 face up.

-- Next, loosely fasten T40070 to intake camshaft.

-- Adapt camshaft adjuster screw -2- and socket 24 -1- to exhaust camshaft.

Fig 11: Adapting Camshaft Adjuster Screw And Socket 24 To Exhaust Camshaft
GWWA15-10253Courtesy of AUDI OF AMERICA, LLC

-- Rotate exhaust camshaft until threaded hole for Camshaft ClampT40070 faces up.

-- At the same time, position a counter-hole SW 24 on T40070 and swing T40070 against exhaust camshaft to install -arrow-.

-- Tighten T40070 by hand onto exhaust camshaft to avoid damaging threads (2nd technician needed).

-- Tighten T40070 bolts to 25 Nm.

Fig 12: Mounting Camshaft Locating Tool T40070 To Both Cylinder Heads
GWWA13-10111Courtesy of AUDI OF AMERICA, LLC

-- Using T40058, rotate crankshaft in direction of engine rotation -arrow- to "TDC".

Fig 13: Locating Torque Converter Bolts And Adapter T40058 To Counterhold Crankshaft
GWWA13-10313Courtesy of AUDI OF AMERICA, LLC

-- Screw 3242 into hole to 20 Nm, if necessary rotate crankshaft very slightly back and forth to completely center the holder.

Fig 14: Identifying Crankshaft Holder 3242
GWWA13-10046Courtesy of AUDI OF AMERICA, LLC

The rest of the installation is in reverse order of removal, note the following:

-- Position camshaft timing chains on camshafts Installing .

CAUTION:

Risk of damaging valves and piston heads after working on valvetrain.

  • The motor must not be started for about 30 minutes after installing 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.