Replacing the middle roof shell seal (M4 Convertible)

Special tools required:

00 9 321

With water ingress in the area of the seat bench or the rear footwell:

Check the water channel of the water discharge (1) for flow and clean where required before seal disassembly.

NOTE: The outlet of the water channel is covered by the side sill trim panel.

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Installation note:

Screws with sealing compound must be replaced and must not be reused
Thread of nut must be cleaned beforehand

New parts required:

Butyl rope dia. 4 mm, BMW part number 83 22 2 159 535
Butyl rope dia. 7 mm, BMW part number 83 19 0 416 659

Removing the seal:

Move soft top into position shown.

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Release left and right screws (1).

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Move soft top into SERVICE POSITION .

Release side of roofliner (1) using folding leg 00 9 321.

Installation note:

Clamps may not be damaged and must be pre-installed on roofliner.

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A long or a short insert (1) is installed, depending on version.

If insert (1) covers screws (2), insert (1) must be disassembled.

Pull insert (1) out towards front.

NOTE: Insert (1) can be secured with superglue.

Release bonded connection by turning slightly.

An insert (1) secured with superglue must be secured with superglue again when installing.

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Release left and right screws (1).

Tightening torque 54 37 01AZ .

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Heat seal to approx. 60°C with hot air blower.

Loosen the front and back of the seal (1) with a folding tool 00 9 321 and thread out.

Remove the seal with a helper.

REMOVE BUTYLENE REMNANTS FROM ROOF SHELL .

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On-the-job safety:

Comply with the relevant safety regulations

Clean adhesive area with adhesive remover.

Air drying time: ≥ 1 minute

Attention!

Adhesive area must be dry and free from dust and grease.

Prepare butyl rope dia. 4 mm, 50 mm long.

Affix butyl rope (1), starting at threaded bush. Completely close gap with butyl rope.

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Prepare butyl rope dia. 4 mm.

Prepare butyl rope dia. 7 mm, 200 mm long.

Affix butyl rope dia. 4 mm at area (1) along entire length of roof shell.

Affix butyl rope dia. 7 mm at area (2).

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Prepare butyl rope dia. 4 mm, 70 mm long.

Affix butyl rope in area (1).

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Prepare butyl rope dia. 4 mm, 50 mm long.

Affix butyl rope (1), starting at threaded bush.

Completely close gap with butyl rope.

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Prepare butyl rope dia. 7 mm, 120 mm long.

Affix butyl rope (1) at radius.

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Prepare butyl rope dia. 4 mm, 70 mm long.

Affix butyl rope (1) and cut off excess butyl.

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Prepare butyl rope dia. 4 mm.

Affix butyl rope dia. 4 mm at area (1) along entire length of roof shell.

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Prepare butyl rope dia. 7 mm, 500 mm long.

Affix butyl rope in area (1) and cut off excess butyl. Make sure butyl rope (1) is correctly positioned in radius of roof shell (2).

Apply the Butyl on the right side of the vehicle analogous to the left side of the vehicle.

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Attention!

Risk of leak.

Connect and smooth all butt joins of butyl ropes.

Installing the seal:

A second person will be needed to help install the seal.

Set seal in place at front and rear and adjust it sideways to correct position. Ensure that gasket is correctly seated.

Loosely install new screws.

Complete and close the roof.

Pre-fasten all screws.

Align gasket flush at front and rear.

Check GAP DIMENSIONS .

Tighten screws.

Observe tightening sequence:

Rear - Middle - Front - remaining screws from front to rear

Tightening torque 54 37 01AZ .

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Tight the screws (1) at rear left and right.

Tightening torque 54 37 01AZ .

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Checks:

Check seal for butyl squeeze-out. If possible, allow vehicle to stand for several hours with closed roof. Repeat test.
Remove any discharged BUTYL .
Check that screws are secure. Make sure there is no gap between screw head and seal.
Carry out leak test. Secure hose to roof and allow water to run over the area in question for 20 minutes.