51 23... Removing/installing ball sockets with clip

WARNING: Injury hazard! When installed, the gas pressurized shock absorber is under preload. Minimize preload as much as possible before removing.

IMPORTANT: Never lift off ball socket with engaged clamp.

Version A:

Push on clamp in direction of groove with screwdriver
Lift off ball socket from ball hub
Slide clamp back
Fit ball socket on ball pivot and snap into place using force

Installation note:

Pack grease into two opposite positions in socket. The grease spreads all round in the ball socket after installation on the ball hub.

Courtesy of BMW OF NORTH AMERICA, INC.

Version B:

IMPORTANT: Risk of damage!
If you are not careful, retaining spring (2) may be bent to such an extent that the entire drive spindle will have to be replaced.

Press drive spindle (1) against ball hub in order to relieve strain on retaining spring (2) at ball hub.

Pull out retaining spring (2) approx. 2-3 mm with screwdriver (3).

Detach spindle foot.

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Observe warning notices on the damper.
Electrical spindle drive for trunk lid is under mechanical spring load!
The component must be secured against falling down.

Attention!

Risk of damage!

Do not press on spindle drive at an angle or twisted.

Installation note:

Press ball socket (1) onto ball hub (2) until retaining spring (3) engages correctly (clicking sound).

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: If retaining spring (4) is damaged!
Release pin (1).
Remove spindle drive (3).
Remove ball socket (2).
Remove retaining spring (4) and replace if necessary.

Courtesy of BMW OF NORTH AMERICA, INC.