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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (3.0L - Crankshaft & Cylinder Block - Engine Code: CATA) >> 13 Crankshaft, Cylinder Block >> Cylinder Block, Belt Pulley Side >> Sealing Flange, Belt Pulley Side, Removing And Installing

Sealing Flange, Belt Pulley Side, Removing And Installing

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

Special tools and workshop equipment required 

Removal

Fig 1: Identifying Bolt -1- And Coolant Hose -Arrow-
GWWA19-10815Courtesy of AUDI OF AMERICA, LLC

-- Remove the coolant thermostat and connection, refer to CONNECTING PIECE WITH COOLANT THERMOSTAT, REMOVING AND INSTALLING .

-- Remove the vibration damper with the ribbed belt pulley, refer to VIBRATION DAMPER WITH RIBBED BELT PULLEY, REMOVING AND INSTALLING .

-- Remove the bolt -1-.

NOTE:

Ignore -arrow-.

-- Tilt the toothed belt guard forward -arrows- and disengage the pins on the underside of the guard.

Fig 2: Identifying Toothed Belt Guard
GWWA23-10190Courtesy of AUDI OF AMERICA, LLC
NOTE:

The toothed belt guard is shown with the intake manifold upper section removed.

-- Remove the bolts -arrows- for the coolant pump ribbed belt pulley using a Wrench - Pin Type3212 to counterhold.

Fig 3: Identifying Spanner Wrench 3212 And Bolts -Arrows-
GWWA13-0879Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1- and nut -2-.

Fig 4: Identifying Bolt -1- And Nut -2-
GWWA19-10120Courtesy of AUDI OF AMERICA, LLC

-- Remove the right coolant pipe from the cylinder block and move it to the side.

-- Pry the cover off the ribbed belt idler roller.

Fig 5: Identifying Bolt -Arrow- And Idler Pulley
GWWA13-0877Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -arrow- and remove the idler roller form the pulley side sealing flange.

-- Remove the bolts.

Fig 6: Identifying Removal Of Front Sealing Flange Sequence -- At Right -Arrows 1- Then At Left -Arrows 2-
GWWA13-0878Courtesy of AUDI OF AMERICA, LLC

-- First remove the right pulley side sealing flange -arrows 1- and then the left one -arrows 2-.

-- Remove the crankshaft seal on the removed sealing flange.

Installation

NOTE:

Replace the crankshaft seals, o-rings and sealing rings.

-- Remove any old sealant from the grooves on the sealing flange as well as from the sealing surfaces.

CAUTION:

Risk of contaminating lubricating system.

  • Cover open parts of engine.
Fig 7: Cleaning Remaining Sealant With Rotating Plastic Brush
GWWA13-0590Courtesy of AUDI OF AMERICA, LLC
WARNING:

Danger of eye injury.

  • Wear protective eyewear.

-- Remove sealant residue on the sealing flange and the cylinder block and the upper part of the oil pan, for example using a rotating plastic brush.

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

NOTE:

Note the expiration date of the sealing compound.

Fig 8: 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).

-- Install the seals -2- and -4- and o-rings -1- and -3-.

Fig 9: Identifying Seals -2 & 4-, O-rings -1 & 3- And Sealant Bead
GWWA13-0870Courtesy of AUDI OF AMERICA, LLC
CAUTION:

The lubrication system could be plugged with excess sealant.

  • Do not apply sealant bead thicker than specified.

-- Apply sealant bead -arrow- to clean sealing flange pulley side sealing surface as shown in illustration.

NOTE:

The ribbed belt side sealing flange must be installed within 5 minutes of applying the sealant.

-- Tighten pulley side sealing flange bolts, refer to Figure.

Fig 10: Identifying Sealing Flange -Arrow- Bolts -- Tighten Diagonally
GWWA13-10071Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal. Note the following:

-- Install the pulley-side crankshaft shaft seal. Refer to CRANKSHAFT SHAFT SEAL, BELT PULLEY SIDE, REPLACING .

-- Install right coolant pipe, refer to COOLANT PIPES OVERVIEW .

-- Install the coolant pump ribbed belt pulley. Refer to COOLANT PUMP AND COOLANT THERMOSTAT OVERVIEW .

-- Install the vibration damper with ribbed belt pulley, refer to VIBRATION DAMPER WITH RIBBED BELT PULLEY, REMOVING AND INSTALLING .

-- Install the coolant thermostat and connection. Refer to CONNECTING PIECE WITH COOLANT THERMOSTAT, REMOVING AND INSTALLING .