Sealing Flange, Transmission Side

Special tools and workshop equipment required 

• Torque Wrench (5-50 Nm) V.A.G 1331
• Torque Wrench (40-200 Nm) V.A.G 1332
• Hand Drill with Plastic Brush Attachment
• Protective Eyewear
• Silicone Sealant D 174 003 A2

Removing 

• The engine is removed, and the transmission is separated from the engine.

-- Remove the timing chain cover. Refer to TIMING CHAIN COVER .

-- Remove the flywheel or drive plate and then remove the sensor wheel for the engine speed sensor -G28- from the crankshaft.

-- Remove the cylinder head. Refer to CYLINDER HEAD .

-- Disengage the wiring harness -arrow- and remove the engine speed sensor -1- and vacuum pump -2-.

Fig 1: Engine Speed Sensor, Vacuum Pump And Bolt

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the bolts -3-.

-- Remove the sealing flange -1- from the cylinder block -2- and from the lower oil pan -3- at the upper and lower marked locations using a screwdriver -A-.

Fig 2: Pressing Off Control Housing Cover From Cylinder Block Or From Upper Section Of Oil Pan At Positions Designated At Top And Bottom Using Suitable Screwdriver

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Start near the alignment sleeves -arrows-.

-- Remove the seal from the removed sealing flange.

Installing 

-- Remove the sealant residue from the cylinder block, upper oil pan and sealing flange using a rotating plastic brush.

-- Clean the sealing surfaces on the cylinder block, the upper oil pan and on the sealing flange. There must not be any oil or grease on them.

-- Replace the seals -1 and 2-.

Fig 3: Replacing Sealing Rings

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Cut the sealant tube nozzle at the front mark (nozzle diameter: approximately 1 mm).

Fig 4: Cut Tube Nozzle At Front Marking (Nozzle Diameter Approx. 3 Mm)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Apply the sealant bead -A- to the sealing flange as shown.

Fig 5: Applying Sealant Bead On To Control Housing Cover

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

• The sealant bead must be 1.5 to 2.0 mm thick.
• Pay special attention to the course of the sealant bead in the area of the -arrow-.

-- Install the sealing flange so that the alignment sleeve fit into the holes in the cylinder block.

-- Install the bolts hand tight.

-- Install the bolts -3- in the cylinder block and in the upper oil pan and tighten them to 10 Nm.

Fig 6: Engine Speed Sensor, Vacuum Pump And Bolt

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Tighten the bolts in the cylinder block and upper oil pan to 25 Nm.

-- Wipe off any sealant that leaks out.

-- Install the alignment sleeves all the way.

-- Install a new seal. Refer to SEAL, TRANSMISSION SIDE .

The rest of the installation follows the reverse of the removal procedure. Note the following:

• Install the brake booster vacuum pump. Refer to VACUUM PUMP .
• Install the cylinder head. Refer to CYLINDER HEAD .
• Install the drive plate. Refer to DRIVE PLATE .
• Or, install the flywheel, Refer to FLYWHEEL .
• Remove the locking pin T40069 from the cylinder block and install the plug.
• Fill the coolant. Refer to COOLANT, DRAINING AND FILLING .

Tightening Specifications