51 72... Notes on seal/gasket installation

NOTE: The utmost care must be taken when removing all sealings on the vehicle. Incorrect fitting can lead to wind noise and water ingress among other things and can affect the ease of closing and opening.

The following instructions only apply to sealing without sealant.

Sealings with sealant must be replaced each time they are disassembled.

Sealing surfaces must be cleaned.

In general, the following applies:
Sealings on the side frame can be fitted and removed any number of times.
Sealings must not be damaged or torn.
The clamping surface must be compressed by hand far enough to ensure that a tight connection on the side flange is still possible. The sealing shanks may touch each other slightly. A completely compressed sealing is not permitted.

Fig 1: Identifying Correct Position For Fitting Seals
Courtesy of BMW OF NORTH AMERICA, INC.
It is not necessary to use special tools to compress the clamping surface. This can be done carefully by hand.
The sealings must always be fitted except in the case of blockages. There is no defined contact pressure.
A new gasket must be fitted if sealings in the tailgate area are repeatedly fitted and removed (water ingress due to cracked sheet metal).
Sealings must be checked for correct fit after installation. If necessary, sealings should be lifted over the adjacent components using the appropriate tool. Neighboring components must not be damaged.

Fig 2: Identifying Improper Position For Fitting Seals
Courtesy of BMW OF NORTH AMERICA, INC.
Sealings must be replaced if the metal inlay of the sealing is visible (corrosion).
Ensure the clamping surface is even all round.

Fig 3: Identifying Clamping Area
Courtesy of BMW OF NORTH AMERICA, INC.
Sealings that are installed with plastic clips fit tightly against the body. If this is not the case, replace the clips or sealings.

Fig 4: Identifying Joint Seal With Plastic Clips
Courtesy of BMW OF NORTH AMERICA, INC.