Crankshaft Seal Retainer: Service and Repair

Transmission Side Sealing Flange

Special tools, testers and auxiliary items required

• SW 24 socket (V.A.G 1332/11)





• Assembly tool (T10134)





• Depth gauge (VAS 6082)





• M6 x 35 bolt (quantity 3)

• M7 x 35 (quantity 2)

Sealing Flange with Sensor Wheel, Removing





• Transmission removed.

- Remove dual mass flywheel => [ Dual Mass Flywheel ] Dual Mass Flywheel.

• The installation location is shown with the engine removed.

- Unhook the intermediate plate at sealing flange and at the alignment sleeves - arrows -.

- Turn the crankshaft at the toothed belt gear bolt until the crankshaft is at "TDC" as illustrated.





- Remove the oil pan. Refer to => [ Oil Pan ] Service and Repair.

- Remove the engine speed sensor (G28) - 1 -.





- Remove the sealing flange bolts - 1 through 6 -.





• Ignore - 7 and 8 -.

• The sealing flange and the sensor wheel are removed from the crankshaft together.





- Alternately turn each of the three M6 x 35 bolts - arrows - 1/2 turn maximum into the sealing flange.

- Remove the sealing flange and sensor wheel.

Sealing Flange with Sensor Wheel, Pressing In

• Sealing flange with PTFE-seal is equipped with a sealing lip support ring. This support ring serves the same function of an assembly sleeve and must not be removed before installation.

• The sealing flange and sensor wheel must not be separated or rotated after being removed from the replacement part packaging.

• The sensor wheel retains the installation position via being located on the locating pin of the assembly tool (T10134).

• The sealing flange and seal are one unit and may only be replaced together with the sensor wheel.

• The assembly tool (T10134) retains the installation position to the crankshaft via a guide pin, which is guided into the bore of the crankshaft.

Installing the assembly tool (T10134)





A Tension surface
B Nut
C Assembly bell
D Locating pin
E Socket head hex bolt
F Guide pin for diesel engines (black handle)
G Guide pin for gasoline engines (red handle)

A - Sealing flange with sensor wheel on the assembly tool (T10134)





- Install the hex nut on the threaded spindle - B - just up to the tension surface - A -.

- Mount the assembly tool (T10134) in a vice by the tension surface - A - on the threaded spindle.





- Push the assembly bell - C - downwards until it touches the hex nut - B - - arrow -.

• Inner part of the assembly tool and assembly bell must be on the same level.

- Remove the circlip - arrow - from the new sealing flange.





• The sensor wheel must not be removed from or rotated in the sealing flange.

• The locating pin - A - on the sensor wheel - C - must align with the marking - B - on the sealing flange.





- Place the sealing flange on a clean even surface with the front side facing up.

- Push the sealing lip support ring - A - downward - arrows - until it touches the flat even surface.





• The upper edge of the sensor wheel and the front edge of the sealing flange must align - arrows -.





- Mount the sealing flange with the front side on the assembly tool (T10134) so that the securing pin - B - fits into the hole - A - in the sensor wheel.





• The sealing flange must lie flat on the assembly tool.

- Press the sealing flange and the sealing lip support ring - B - onto the surface of the assembly tool (T10134) while tightening the 3 knurled bolts - A - so that the securing pin cannot slip out of the hole in the sensor wheel.





• The sensor wheel must remain secured in the assembly tool while installing the sealing flange.

B - Installing Assembly Tool (T10134) with Sealing Flange on Crankshaft Flange:





• The crankshaft flange must be free of oil and grease.

• Engine at "TDC".

- Install the nut - B - all the way to the end of the threaded spindle.

- Press the threaded spindle on assembly tool (T10134) in - direction of arrow - until the nut - B - touches the assembly bell - A -.

- Align the flat side of the assembly bell with the oil pan side sealing surface of the cylinder block.





- Install the hex socket head bolts - A - in the crankshaft flange approximately 5 thread turns and attach the assembly tool (T10134) to the crankshaft flange.

- Install two M7 x 35 bolts - A - into the cylinder block to guide the sealing flange.





C - Bolting Assembly Tool (T10134) to Crankshaft Flange





- Press the assembly bell - C - in - direction of arrow - by hand until the sealing lip support ring- B - touches the crankshaft flange - A -.


Risk of interchanging.

• Do not insert the guide pin for gasoline engines (red handle) - F - into the crankshaft threaded bore.

- Install the guide bolts for diesel engines (black handle) - D - into the hole in the crankshaft. The sensor wheel will be in its final installed position.

- Tighten both assembly tool hex socket head bolts by hand.

- Install the nut - E - as far as possible on the threaded spindle by hand until it touches the assembly bell - C -.

D - Installing the Sensor Wheel on the Crankshaft Flange with the Assembly Tool (T10134):





- Tighten the assembly tool (T10134) nut to 35 Nm.

• After tightening the nut to 35 Nm, a minimal air gap must still be present between the cylinder block and sealing flange.

E - Checking the sensor wheel installed position on the crankshaft:





- Install the nut - E - all the way to the end of the threaded spindle.

- Remove the bolts - A - from the cylinder block.

- Remove the knurled bolts - B - from the sealing flange.

- Remove the hex socket head bolts.

- Remove the hex socket head bolts from the crankshaft flange and remove the assembly tool (T10134) from the crankshaft flange.

- Remove the assembly tool (T10134).

- Remove the sealing lip support ring.

- Attach the depth gauge (VAS 6082) to the crankshaft flange.





- Measure the space between the crankshaft flange - A - and the sensor wheel - B -.





• Specified value: - a - = 0.5 mm

- If dimension - a - is too small, press the sensor wheel further.

- When the specified value is reached, assemble the rest.

F - Pressing the sensor wheel further:





- Tighten the hex socket head bolts - A - by hand and secure the assembly tool (T10134) to the crankshaft flange.

- Press the assembly tool onto the sealing flange by hand.

- Install the nut - E - as far as possible on the threaded spindle by hand until it touches the assembly bell - C -.





- Tighten the assembly tool (T10134) nut to 40 Nm.





- Check the sensor wheel installed position on the crankshaft.

- If dimension "a" is still too small, tighten the nut on the assembly tool (T10134) to 45 Nm.

- Check the sensor wheel installed position on the crankshaft.

Assembling:





- Tighten sealing flange bolts => [ Ribbed Belt Transmission Side
Sealing Flange - Tightening Specifications and Sequence ] Dual Mass Flywheel and Sealing Flange, Transmission Side Assembly Overview.

Assembly is performed in reverse order of removal, noting the following:

- Install the engine speed sensor (G28) - 1 -.

- Install oil pan => [ Oil Pan ] Service and Repair.

- Install dual mass flywheel => [ Dual Mass Flywheel ] Dual Mass Flywheel.