Removing and installing (replacing) roof shell at front (M4 Convertible)

Necessary preliminary tasks:

Connect BATTERY CHARGER .
Remove ROOFLINER FOR ROOF SHELL AT FRONT .

NOTE: The front roof shell may only be removed with the center roof shell installed.

Never remove roof shells together.

Installation note:

Microencapsulated screws (Loctite) must be replaced and may not be reused
Screw connection must be completed within 20 minutes (start of curing)
Microencapsulated screws must not be retightened
Thread of nut must be cleaned beforehand in event of repeated use

Move soft top into service position.

Move soft top so that angle of the hinges is not ≤90°.

IMPORTANT: Risk of damage! Pressure in hydraulic system drops and soft top loses its position.

Support rear roof shell to soft top cover with suitable auxiliary materials.

Auxiliary materials must lie over wide area and if possible over entire length.

Rear roof shell is supported by auxiliary materials on soft top cover.

Roof shells block each other.

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Unfasten plug connection (1) and disconnect.

Detach cable strap.

Installation note:

Replace cable strap.

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Release screws (1).

Remove shaper (2) from roof shell.

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IMPORTANT: Tape off cover (1) of roof hinge bracket in marked area.

Risk of damage!

With a second person helping, secure roof shell at front against tilting.

Unfasten screws (2).

Installation note:

Replace microencapsulated screws.

Turn roof hinge console.

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IMPORTANT: Lock barrel screws with a flat wrench without fail.

Mark screws (1) and release.

Tightening torque 54 37 04AZ .

Remove roof shell with a second person helping.

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IMPORTANT: Do not adjust barrel screws.

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NOTE: The work scope for removing and installing the roof shell ends here.

Replacement:

Remount LOCK PACKAGE .

Remount COWL PANEL LOCK .

Remove GASKET (2) .

Release screws (1) and remove retaining strip (3) for gasket.

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Drill out rivets (1) from guide element (2) on left and right.

Remove guide element (2).

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Release screws (1).

Remove shaper (2) from roof shell.

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Measure heights of all barrel screws with a depth gauge and note down.

Carry over adjustment to new roof shell.

Installation note:

Insert barrel screws with Loctite.

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Adjust SLIDER HOUSING .

Check GAP DIMENSIONS for soft top.