Contents: Removal ⤓ Installation ⤓
Removal
- Disconnect the cable from the negative battery terminal.
Front crankshaft oil seal
- Remove the timing belt of the gas distribution mechanism drive.
- Unscrew the bolt and remove the crankshaft pulley and woodruff key (Fig. 4.18).
Fig. 4.18. Crankshaft oil seals: 1 - crankshaft pulley; 2 - segment key; 3 - front crankshaft oil seal; 4 - flywheel; 5 - rear crankshaft oil seal; 6 - bolt, 53 Nm
- Drill two small holes in the front crankshaft oil seal, located at diametrically opposite ends of the oil seal. Screw two self-tapping screws into the drilled holes in the oil seal and, using pliers, pull the oil seal out by the screw heads.
- Clean the oil seal seat.
Rear crankshaft oil seal
- Remove the gearbox.
- Unscrew the bolts and remove the clutch housing with the pressure plate and the driven clutch disc.
- Using a special tool, block the flywheel from turning and unscrew its mounting bolts (Fig. 4.19)
Fig. 4.19. Unscrewing the flywheel mounting bolts and using a special tool to lock the flywheel from turning
- Remove the flywheel.
- Using a knife or a flat-head screwdriver, make a groove near the working edge of the seal.
Warning: Be careful not to damage the crankshaft and cylinder block.
- Insert a flat-head screwdriver blade wrapped in cloth into the punched groove and use the screwdriver as a lever to remove the seal.
Installation
Rear crankshaft oil seal
- Lubricate the working lip of the new oil seal with a thin layer of engine oil.
- Install the special guide tool MB996038 onto the end of the crankshaft.
- Install the seal on the special guide tool.
- Using a special tool, install the rear crankshaft oil seal (Fig. 4.20).
Fig. 4.20. Using a special tool to install the rear crankshaft oil seal
- Clean the threaded holes in the crankshaft from any remaining blocking agent.
- Apply a layer of blocking agent to the threaded holes in the crankshaft and to the threads of the flywheel mounting bolts.
Locking agent: ЗМ Stud Locking 4170 or equivalent
- Using a special tool, block the flywheel from turning and screw in its mounting bolts (Fig. 4.19).
Tightening torque: 53 Nm
- Install the driven clutch disc, the clutch housing with the pressure plate and screw in the bolts for fastening it.
- Install the gearbox.
Front crankshaft oil seal
- Lubricate the working lip of the new oil seal with a thin layer of engine oil.
- Install special guide tool MB996040 to the front end of the crankshaft.
- Install the seal on the special guide tool.
- Using a special tool, install the front crankshaft oil seal (Fig. 4.21).
Fig. 4.21 Using a special tool to install the front crankshaft oil seal
- Install the crankshaft pulley.
- Install the timing belt to drive the gas distribution mechanism.
- Connect the cable to the negative terminal of the battery.
