Replacing Right Engine Support Arm (N52/N52K/N53)
22 11 100 - Replacing right engine support arm (N52/N52K/N53)
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.
The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Secure engine in installation position Securing Engine In Installation Position (N52, N53).
- Remove underbody protection.
- Remove reinforcement plate .
Observe safety instructions on raising the vehicle 00 .. ... Lifting Vehicle With A Lifting Platform.
Installation Note:
Replace aluminium screws.
Release grounding strap (1) on engine support arm (not all-wheel drive).
Note:
Clean contact surfaces to ensure a safe ground connection.
Unscrew nut (3).
Tightening torque 22 11 2AZ Specifications.
Securing engine in installation position
Release bolts (2) and remove engine support arm.
Tightening torque and angle of rotation 22 11 3AZ Specifications.