Flywheel: Service and Repair
11 22 500 - Removing and installing or replacing flywheel (N52)
Special tools required:
- 11 4 180 11 4 180 Screwdriver Socket Torx T60
- 11 9 260 11 9 260 Counter Support with Screw Connection
- 11 9 265 11 9 260 Counter Support with Screw Connection
Important!
Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminium screws/bolts exclusively.
Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without
color coding (blue).
For reliable identification:
Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Remove transmission.
- Remove clutch.
Block flywheel (1) with special tool 11 9 260 11 9 260 Counter Support with Screw Connection, use an old transmission screw for this purpose.
Installation Note:
Replace aluminium screws.
Unfasten flywheel screws.
Tightening torque: 11 22 1AZ. 11 22 Flywheel
Installation Note:
Flywheel (1) is secured with an alignment pin.
Fit new flywheel screws.
Clean crankshaft thread for flywheel screws.
Secure flywheel with an old transmission screw (1) and special tools 11 9 260 11 9 260 Counter Support with Screw Connection and 11 9 265 11 9 260 Counter Support with Screw Connection.
Installation Note:
Replace aluminium screws.
Release flywheel screws with special tool 11 4 180 11 4 180 Screwdriver Socket Torx T60.
Installation Note:
Flywheel is secured with a dowel pin.
Fit new flywheel screws.
Tightening torque: 11 22 2AZ. 11 22 Flywheel
Assemble engine.