Repair Instructions For Bonded Seals on Slide/Tilt Sunroof

Repair Instructions For Bonded Seals On Slide/Tilt Sunroof

1. Damage pattern and repair
1.1 Partially detached bond (rubber-adhesive tape or adhesive tape-paint)
- Up to 120 mm for retouching without auxiliary resources
- Up to 200 mm repaired with pressing-on tools on straight surfaces

a. Cleaning damaged areas: - Degrease bonded area with adhesive cleaner (refer to BMW Parts Service) and remove other residues.

NOTE:
Use necessary cotton- or fluff-free paper towel once only.
When using solvent:
expose repair area to air for at least 2 minutes.

b. Apply cyanoacrylate adhesive: - With a fine nozzle, apply a wafer-thin bead to adhesive tape.

CAUTION:
Avoid contact to skin.
Do not apply adhesive to visible painted surfaces.

c. Pressing on rubber seal: - Press down seal using contact pressure (forced pressure not necessary) for at least 1 minute.

CAUTION: Load can only be applied to the bond after a period of 2 minutes. This waiting time is absolutely essential.

1.2 Larger defects (mechanical damage and larger separations of seal)
- A complete replacement of the rubber seal is necessary.

a. Peeling off damaged rubber seal: - Pull off rubber seal slowly at an angle of 15 to 25 degrees.

NOTE:
Make sure the connection between adhesive tape and seal is retained.

If the connection between adhesive tape and seal is detached: Carefully and slowly detach adhesive tape at an angle of 15 to 25 degrees from roof opening or lid.

If, in the case of older seals, you are peeling off using a hot air blower: Do not damage paintwork.

Do not detach rubber-adhesive tape connection if at all possible.

b. Cleaning bonded area: - Degrease bonded area with adhesive cleaner (refer to BMW Parts Service) and remove other residues.

NOTE:
Use necessary cotton- or fluff-free paper towel once only.
When using solvent:
expose repair area to air for at least 2 minutes.

c. Detaching protective film from - Detach protective film from rubber seal in sections.
bonded area:

CAUTION: Once the protective film has been removed, do not under any circumstances touch the exposed bonded area.

d. Applying rubber seal: - Apply rubber seal on roof opening edge beginning at rear center. Use upper lip as application edge. Press on seal continuously by hand. Carefully unwrap seal at radii without tension and press down (critical area).

NOTE: If positioned incorrectly, the seal can still be pulled off, repositioned and pressed on again.

e. Establishing seal joint: - Mark contact point at joint by pressing down loose end on seal of already bonded end. Then cut and press down loose end at same height.

NOTE: Small areas of seal can remain stuck to adhesive tape of loose end.

f. Pressing on seal: - Press against seal strongly with a roller. Contact pressure approx. 70 N.

E36 only: - Contact pressure approx. 30 N.
- Tear off tear-off lip at rear and side in area of narrower flange.

2. Checking rubber seal
- Check the bonded seals for correct positioning and perfect adhesion. The bonding can be checked by pressing back the sealing lip.
- The force required to peel off the seal immediately after gluing must be greater than 10 N/cm.

4. General information on handling rubber seal profiles:
- If seals reveal partly detached protective film on delivery, they must not be bonded.
- Store seals at 15 degree C to 25 degree C.
- If, during the handling, the protective film has come off before bonding, it can still be bonded.
- Bonding at room and object temperature > 20 degree C. Temperatures between 40 and 50 degree C significantly increase initial adhesion.
- Seals, which are subjected to temperatures above 80 degree C after gluing, will be very difficult to remove.