26.1 Installation details of the rear sealing flange and flywheel
1 cylinder block
2, 8 Centering sleeve
3 Sealing flange, with integrated crankshaft rear oil seal
4 Bolt, 9 Nm
5 Intermediate plate, must sit on the centering sleeves
6 Flywheel bolt, to be replaced, 60 Nm, then retighten by 90°
7 2-mass flywheel
2. Removal and installation of a 2-mass flywheel is carried out in the same way as on a 3.6 l engine (see Section 8). The following describes the replacement of the sealing flange with the crankshaft rear oil seal.
Note: The crankshaft rear oil seal is integrated into the sealing flange and must only be replaced with it.
3. Remove the flywheel (by analogy with the 3.6 l engine, see Section 8) and remove the intermediate plate from the sealing flange.
4. Turn out bolts (1-8 on resist. illustrations) and remove the sealing flange.
26.4 Seal flange bolts
5. Remove any remaining sealant from the mating surfaces on the cylinder block and on top of the oil pan. Clean mating surfaces of oil and grease. The use of a chemical sealant and grease remover is recommended.
6. Apply a bead of silicone sealant D174 003A2 with a diameter of 2-3 mm to the mating surface of the sealing flange (see resist. illustration). The roller must not be thicker, otherwise it may squeeze out and enter the lubrication system.
26.6 Sealant application scheme
Note: After applying the sealant, the flange must be installed within 5 minutes or less. Wait at least 30 minutes for the sealant to dry before adding engine oil.
7. Put on the crankshaft guide sleeve T20097 (see illustration 26.4) and slide the sealing flange over it.
26.7 Guide sleeve for mounting the flange
8. Tighten the flange mounting bolts in sequence (1-8 in illustration 27.15) first by hand and then with a force of 9 Nm.
9. Install intermediate plate and flywheel. Allow approximately 30 minutes for the sealant to set before adding oil.