Preload On Top Of Windshield To Prevent Wind Noise:

Fig 1: Identifying Windshield To Prevent Wind Noise

When installing windshield (4), check that it is lower with respect to roof outer skin panel (1). This is the only way of ensuring sufficient pretension between the sealing lip (2) and the roof (prevention of wind noise). Check installation position of windshield (4) in middle of vehicle with special tool 51 3 210; a clearance (A) is permitted.

Dimensions:

Standard windows = designation "N":

= 0 - 1.5 mm

Anti-theft windows = designation "S":

= 0 - 0.6 mm

Pretension is generated with special tool 51 3 130 (three HR foam blocks).

1 piece (1): 40 x 70 x 70 mm (W x H x D).

2 pieces (2): 40 x 30 x 70 mm (W x H x D).

Position of HR foam blocks:

HR foam block (1), middle, at distance (A) from top.

HR foam blocks (2), distance (A) from top, distance (B) at side.

100 mm.
100 mm.

Fig 2: Identifying Position Of HR Foam Blocks

Open both front doors.

Secure HR foam blocks (2) with plastic adhesive tape (1) (Tesa).

Pretension windshield with plastic adhesive tape (1) (Tesa) until it is correctly positioned at top (refer to two work steps before).

NOTE: Do not stick plastic adhesive tape (1) above A-pillar finisher (3) or ITS head airbag.

Fig 3: Identifying Adhesive Tape (1), HR Foam Blocks (2) And A-Pillar Finisher

CAUTION: Remove contamination caused by residual adhesive immediately with Sika remover 208 (sourcing reference: BMW Parts Service). Do not press out windscreen glass again for this purpose. Hardened glue can only be removed by machine.

Assemble car.

After the hardening time, remove support and adhesive tape.

NOTE: Locate leakage:

By spraying water underneath sealing lips.
With an ultrasonic leak detector.

If necessary, seal off leakage with corresponding nozzle.