Replacing the front crankshaft oil seal (Mercedes-Benz E-Class W123)

1. Remove the radiator and cooling fan. Also remove the drive belts where necessary.

2. Using a hex socket wrench, remove the pulley and vibration damper bolts from the front flange of the crankshaft.

3. Hold the crankshaft from turning and remove the starter by inserting a wide-bladed screwdriver into the flywheel ring gear. If the flywheel (leading disk) already removed, insert the two bolts back into the crankshaft and operate the lever.

4. Unscrew the crankshaft front flange bolt and remove the special washers.

5. Align the marks on the flange (balancing disk) and the crankshaft and remove the flange with a puller. Remove the mounting pins.

6. Remove the oil seal using a screwdriver.

7. If necessary, remove the spacer and replace it with a new one.

8. Clean the seal cavity and install the spacer in place, tapping it lightly.

9. Lightly lubricate the lip of the seal, then install it flush into the socket using a metal drift.

10. Install the flange onto the crankshaft and, tapping lightly, the mounting pins.

11. Place the special washers on the flange bolt, aligning their concave surfaces towards the head, then insert and tighten the bolt to the specified torque.

12. Install the vibration damper, pulley and tighten the bolts.

13. Install the drive belts, radiator and cooling fan.

Material created based on the website (mercedesman.ru)