Audi Workshop Service and Repair Manuals

Removing and installing sealing flange (front)

Special tools and workshop equipment required

t	Counterhold tool -3415-

t	Assembly tool -T10053-

t	Torque wrench -V.A.G 1331-

t	Torque wrench -V.A.G 1332-

t	Electric drill with plastic brush attachment

t	Safety goggles

t	Sealant → Parts catalogue

Removing –  Remove poly V-belt → Chapter. –  Remove toothed belt → Chapter.

–  Remove crankshaft toothed belt sprocket. To do this, counter-hold sprocket with special tool -3415-.

–  Unscrew central bolt -1- for crankshaft toothed belt sprocket -2- and remove sprocket. –  Remove diamond-coated washer -3- from toothed belt sprocket.

–  Remove bolts -1 ... 10-. –  Lever off front sealing flange and remove. –  Drive out oil seal with flange removed. Installing l  Tightening torque → Chapter   Note Place a cloth over the exposed section of the sump. –  Carefully remove any sealant residue on the cylinder block and sump.   WARNING Wear safety goggles.

–  Remove sealant residue from sealing flange with rotating plastic brush or similar. –  Clean sealing surfaces; they must be free of oil and grease.

–  Cut off tube nozzle at front marking (diameter of nozzle approx. 2 mm).

–  Apply a thin bead of sealant at the edge of the joint between the cylinder block and the sump -arrows-.

–  Apply the bead of sealant onto the clean sealing surface of the sealing flange as illustrated -arrow-. l  Thickness of sealant bead: 2 ... 3 mm   Caution Make sure oil strainer is not clogged by excess sealant. The bead of sealant must not be thicker than specified.   Note Sealant bead must not be wider than 3 mm, otherwise excess sealant could ingress into sump and clog strainer in oil intake pipe.

–  Coat the lower sealing surface on the sealing flange lightly with sealant -hatched area-.   Note The sealing flange must be installed within 5 minutes after applying sealant. –  Push the sealing flange carefully onto the dowel pins on the cylinder block.   Note Use guide sleeve -T10053/1- to attach sealing flange with oil seal fitted.

–  Tighten sealing flange bolts in three stages as follows: 1.  Screw in bolts -1 ... 10- hand-tight. 2.  Tighten bolts -1 ... 6- in diagonal sequence and in stages. 3.  Then tighten bolts -7 ... 10-. –  Install crankshaft oil seal (pulley end) → Anchor.

–  Install crankshaft toothed belt sprocket -2- with new diamond-coated washer -3- and new central bolt -1-.   Note t  Contact surfaces between toothed belt sprocket, diamond-coated washer and crankshaft must be free of oil. t  Do not lubricate bolt for crankshaft sprocket.

–  Use counterhold tool -3415- to tighten crankshaft toothed belt sprocket. Remaining installation steps are carried out in reverse sequence; note the following: –  Install toothed belt → Chapter. –  Install crankshaft pulley → Chapter. –  Install poly V-belt → Chapter.   Note Thread and shoulder must be free of oil and grease.