Removal and installation the sealing flange on the belt pulley side (VW Passat B6)

Removal

Remove the poly V-belt.

Remove the timing belt.



Remove the crankshaft gear. Secure the gear with a counter support (fig. 2.138).

Unscrew the right drive shaft from the gearbox.

Remove the mounting bolts on the engine block of the additional heater fluid supply pipe.

Remove the oil pan.

Unscrew the front sealing flange.

Remove the sealing flange, if necessary, dismantle it by lightly tapping with a rubber hammer.

Remove any remaining sealant from the cylinder block using a flat scraper.

Remove any remaining sealant from the sealing flange using a drill and a plastic bristle attachment.

Clean the mounting surfaces. They should be free of oil and grease.

Installation

Cut off the tube tip along the front mark (hole diameter about 3mm).

Note: Observe the expiration date of the sealant.

Note: The sealing flange must be installed within 5 minutes after applying the silicone sealant.

Note: The sealant bundle should not be thicker than 2-3 mm, otherwise excess sealant will get into the oil pan. The sealant may get on the sealing surface of the crankshaft oil seal or clog the mesh filter of the oil pump oil line.

Note: Cover the sealing surface of the O-ring with a clean cloth before applying the sealant.

Apply silicone sealant to the clean sealing flange seating surface as shown in Figure 2.262.

Immediately install the sealing flange and lightly tighten all mounting bolts.

Note: Use a guide bushing to install the sealing flange with the sealing ring installed.

Screw in the new sealing flange mounting bolts, alternating in a criss-cross pattern, to a torque of 15 Nm.

Install the crankshaft gear.

Tighten the central bolt to 120 Nm + 1/4 turn further (90°) (additional tightening can be performed in several stages).

Install the oil pan.

Install the timing belt.

Install the poly V-belt.

Note: After installation, allow the sealant to dry for about 30 minutes. Only then can you fill in the engine oil.