It is recommended to use special tools to remove and install the seals. To access the front seal installed in the lower timing chain cover, remove the vibration damper. The procedure for accessing the rear seal is described below.
1. Remove the manual transmission together with the clutch or automatic transmission (see chapter Manual gearbox and clutch or Automatic transmission).
2. Drain the engine oil (see chapter Vehicle settings and routine maintenance).
3. Remove the flywheel (see section Removal and installation the flywheel).
4. Unscrew the mounting bolts.
5. Remove the crankshaft rear oil seal cover mounting bolts. Separate the crankcase gasket from the rear oil seal cover and remove the cover.
The rear oil seal cover is supplied complete with the oil seal. If necessary, the oil seal can be removed and installed in the cover using a special tool
6. Replace the gasket. Apply Hylomar SQ32 Spezial sealant to the joints with the crankcase.
7. Install tool No.11 2 390 on the crankshaft. Lubricate the working edges of the oil seal with engine oil and place the oil seal cover in its proper place, then carefully remove tool No.11 2 390.
8. If the rear oil seal cover mounting bolt holes are covered, use hex head bolts, paying attention to their length. Otherwise, use socket head bolts, and use new washers.