Oil Pan: Service and Repair

Oil pan, removing and installing

Special tools, testers and auxiliary items required

^ Electric drill with plastic brush attachment
^ Silicone sealant D 176 404 A2

Removing





- Remove noise insulation in the center (arrows).
- Drain engine oil.





- Remove oil return line -3- from oil pan.
- Remove oil pan.

Note:
Loosen and tighten oil pan bolts with jointed wrench 3185. Remove bolts with socket attachment 3249.

- Take off oil pan: if necessary loosen it by striking lightly with a rubber hammer.
- Remove sealant remaining on cylinder block with flat scraper.





- Remove remaining sealant from oil pan (with rotating plastic brush or similar).

WARNING!
Wear eye protection

- Clean sealing surfaces: they must be free of oil and grease.

Installing

Note:
The oil pan must be installed within 5 minutes after applying the silicone sealant.





- Cut off nozzle on tube at front marking (nozzle dia. approx. 3 mm).

^ Thickness of sealant bead: 2 - 3 mm

Note:
The bead of sealant must not be thicker than 3 mm, as otherwise excess sealant will enter the oil pan and obstruct the strainer in the oil intake line.





- Apply silicone sealant to the clean sealing surface on the oil pan as illustrated. (The illustration shows the position of the sealant bead on the cylinder block.)
- Apply the sealant bead with particular care around the rear sealing flange (arrows).
- Install the oil pan immediately and bolt to cylinder block. Start by tightening all the bolts by hand.
- Tighten the 3 bolts securing oil pan to transmission.
- Tighten bolts securing oil pan to cylinder block in two stages in diagonal sequence.





- Remove oil return line -3- at oil pan.

Tightening torques





Note:
^ When installing the oil pan with the engine out of the vehicle, ensure that the oil pan is flush with the cylinder block at the flywheel end.
^ After installing the oil pan, wait for about 30 minutes for the sealant to dry before putting in engine oil.