300E 4MATIC (124.230) L6-3.0L (103.985) (1990)
Timing Cover: Service and Repair
Upper Cover
REMOVAL AND INSTALLATION
1. Set hood vertical.
Protective Cover
2. Remove protective cover (1) from high voltage distributor. Unclip catches (arrow) and pull protective cover (1) upwards out of the guides.
Distributor Cap Screws
3. Remove distributor cap screws (2), take off distributor cap (4) and unplug spark plug cables.
4. Open expansion tank cap to release cooling System pressure.
5. Remove heating water return line (3).
Installation Note: Replace seal.
Valve Cover
6. Unscrew bolts (28), tightening torque 8.5 Nm (6.3 ft lbs). Take off valve cover (30) with ignition cables and distributor cap.
CAUTION: If valve cover is difficult to remove, do not strike cover with a hammer (risk of cracking and fracturing).