Sealing Flange - Belt Pulley End, Removing and Installing
Sealing flange - belt pulley end, removing and installing
Special tools, testers and auxiliary items required
^ Spur belt spreading 3099
^ Assembly tool T10053
^ Torque wrench V.A.G 1331
^ Torque wrench V.A.G 1332
^ Silicone sealing compound D176404 A2
^ Hand drill with plastic brush (commercially available)
^ Flat scraper (commercially available)
Removing
- Remove toothed belt.
- Remove crankshaft toothed belt sprocket. Counterhold sprocket with spur belt spreading 3099.
Note:
^ Place two washers between toothed belt sprocket and tool when installing the spur belt spreading.
- Drain engine oil.
- Remove tensioning roller.
- Remove sealing flange - belt pulley end. Release using light blows with a rubber headed hammer if necessary.
- Drive seal out when sealing flange is removed.
- Remove sealant residue on cylinder block with a flat scraper.
- Remove sealant remains on sealing flange with a rotating plastic brush (wear eye protection).
- Clean sealing surfaces. They must be free of oil and grease.
Installing
Note:
^ Observe the use-by date of the sealing compound.
^ The sealing flange must be installed within 5 minutes of applying the silicone sealant.
- Remove oil residue from crankshaft journal using clean cloth.
- Cut off tube nozzle at forward marking (approximately 3 mm diameter nozzle).
- Apply silicone sealant bead as shown to clean sealing surface of sealing flange.
^ Thickness of sealant bead - arrow - : 2 to 3 mm
Note:
^ The sealing compound bead must not be thicker, otherwise excessive sealing compound will enter the oil pan and may block the suction pipe strainer. It can also drop on the sealing surface of the crankshaft sealing ring.
^ Cover the sealing surface of the sealing flange with a clean cloth before applying the sealant bead.
- Install sealing flange immediately and lightly tighten all bolts.
- Tighten sealing flange securing bolts using alternate sequence.
- Tightening torque: 15 Nm
- Install a new seal.
- Install tensioning roller.
Note:
^ The sealant must be allowed to cure for approximately 30 minutes after installing the oil pan. Only then fill the engine with oil.
- Install toothed belt.