Sealing flange (front), removing and installing
WARNING: This page is about a different variant/trim than selected.
Special tools, testers and auxiliary items required
- Sleeve 2080 A
- Counter support 3415
- Torque wrench V.A.G 1331
- Torque wrench V.A.G 1332
- Assembly tool T10053
- Hand drill with plastic brush attachment
- Flat scraper
- Silicone sealant D 176 404 A2
Removing
- Remove ribbed belt. Refer to Ribbed belt, removing and installing .
- Remove toothed belt. Refer to Toothed belt, removing, installing and tensioning .
- Remove toothed belt crankshaft sprocket. Secure toothed belt sprocket with 3415 counterhold.
- Drain engine oil.
- Remove oil pan. Refer to Oil pan, removing and installing .
- Unbolt front sealing flange.
- Remove sealing flange, and if necessary, loosen by applying light strikes with a rubber hammer.
- Remove sealant residue from cylinder block with a flat scraper.
- Cover seal with a clean rag.
- Remove sealant residue from sealing flange using a rotating plastic brush (wear safety glasses).
- Clean sealing surfaces. Sealing surfaces must be free of oil and grease.
Installing
NOTE:
- Note the expiration date of the sealing compound.
- Sealing flange must be installed within 5 minutes of applying silicone sealing compound.
Fig 4: Cutting Off Tube Nozzle At Front Marking & Applying Silicone Sealing Compound To Clean Sealing Surface Of Sealing Flange
- Cut off tube nozzle at forward mark (nozzle approx. 3 mm diameter)
- Apply silicone sealing compound as shown to clean sealing surface of the sealing flange. Sealing compound bead must be:
- Thickness of sealant bead - arrows - : 2 to 3 mm
NOTE:
- The sealing compound bead must not be thicker, otherwise excess sealing compound could enter the oil pan and may block the oil suction pipe strainer. Likewise, it could drip onto the sealing surface of the crankshaft seal.
- Before applying the bead of sealant, cover the sealing surface of the seal with a clean rag.
- Set sealing flange in place immediately and lightly tighten bolts.
NOTE:
- To install the sealing flange with the seal already installed, use sleeve 2080 A.
PTFE version of oil seal
NOTE:
- To install the sealing flange with the seal already installed, use the guide sleeve assembly tool T10053.
Continue for all versions
- Fasten sealing flange bolts in a diagonal sequence. Torque specification: 15 Nm
- Remove excess sealant.
- Install oil pan.
NOTE:
- After installing, allow sealant to dry for approx. 30 minutes. Only after then may the engine oil be replenished.
How to install toothed belt and adjust valve timing. Refer to Toothed belt, removing, installing and tensioning .
- Install ribbed belt. Refer to Ribbed belt, removing and installing .