Sealing Flange, Removing And Installing, Belt Pulley Side: Removing

Depending on the model, preliminary work may be required. Refer to RIBBED BELT, REMOVING AND INSTALLING .

-- Remove the vibration damper. Refer to VIBRATION DAMPER, REMOVING AND INSTALLING .

-- Remove A/C Compressor bracket. Refer to A/C COMPRESSOR BRACKET, REMOVING AND INSTALLING .

-- Remove the Oil Pressure Regulation Valve -N428-. Refer to Oil Pressure Regulation Valve -N428-, REMOVING AND INSTALLING .

-- Remove the oil pan upper section. Refer to OIL PAN UPPER SECTION, REMOVING AND INSTALLING .

-- Remove the bolt -1- using the Bit Torx T30:T10573  .

Courtesy of AUDI

-- Remove the oil dipstick tube -2- from the belt pulley side sealing flange. (Shown on Audi A8).

-- Seal the opening with thoroughly clean plus from the Engine Bung Set:VAS 6122  .

-- Loosen and remove the bolts in the order -10 to 1-.

Fig 1: Ribbed Belt Pulley Side Sealing Flange - Tightening Sequence

Courtesy of AUDI

-- To loosen the front sealing flange -1-, install three M5x20 bolts -arrows- all the way.

Courtesy of AUDI

-- Install the bolts alternating from side to side ¹ /₂ turn respective until the belt pulley sealing flange is loosened.

-- Remove the bolts again and remove the sealing flange and the crankshaft seal.