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.

–  Release crankshaft sprocket (use counterhold tool -3415- to counterhold sprocket).

–  Remove central bolt -1- for crankshaft sprocket -2- and remove sprocket together with diamond-coated washer -3-.

–  Remove bolts -1 ... 10-. –  Lever off front sealing flange and remove. –  Drive out oil seal with flange removed. Installing   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 (nozzle approx. 2 mm Ø).

–  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   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 bolts in the specified sequence: –  Tighten bolts -1 ... 6-. –  Tighten bolts -7 ... 10-. –  Install crankshaft oil seal (pulley end) → Anchor. –  Renew centre bolt for toothed belt sprocket.   Note t  Contact surface between toothed belt sprocket and crankshaft must be free of oil. t  Do not lubricate bolt for crankshaft sprocket.

–  Install crankshaft sprocket -2- with new diamond-coated washer -3- and new central bolt -1-.

–  Counterhold crankshaft sprocket using counterhold tool -3415- and secure sprocket. Remaining installation steps are carried out in reverse sequence; note the following: Installing toothed belt and adjusting valve timing → Chapter. –  Install crankshaft pulley → Chapter. –  Install poly V-belt → Chapter. –  Install lock carrier with attachments → General body repairs, exterior; Rep. Gr.50.

–  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten nuts -arrows-. –  Install front bumper cover → General body repairs, exterior; Rep. Gr.63. –  Check headlight adjustment → Booklet803. Tightening torque

Component		Nm
Sealing flange to cylinder block		15
Toothed belt sprocket to crankshaft		90 + 90° 1)2)
Stop for torque reaction support		28
l  1) Renew bolt l  2) 90° = a quarter of a turn

Note Thread and shoulder must be free of oil and grease.