51 31 000 Removing and installing/renewing windscreen

IMPORTANT: INSTRUCTIONS ON CEMENTING WINDSCREEN serve as the basis for this repair instruction and must be observed without fail.

Cover front side walls with protective covers.

NOTE: Removal is performed with ROLL OUT 2000 . Only use an oscillating blade when replacing the windscreen.

Necessary preliminary work

Remove TRIM PANELS FOR ROOF PILLARS
Remove INTERIOR REAR-VIEW MIRROR
Remove WINDSCREEN FRAME SEAL
Remove COVER FOR COWL PANEL

Replacement:

If necessary, remove RAIN/LIGHT SENSOR
If necessary, remove SOLAR RAIN/LIGHT SENSOR
If necessary, remove FOGGING/CONDENSATION SENSOR

Replacement only

Fit 36 mm blade (sourcing reference: BMW Parts Department) to the tool.

Regrind blade with a grinding stone while machine is running (new blades also).

Carefully insert blade between body aperture and windscreen.

Guide handle of knife parallel to windscreen.

Cut through adhesive bead as closely as possible to windscreen.

Fig 1: Identifying 36 mm Blade On Tool

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NOTE: When cutting is carried out at the bottom, the engine compartment lid must be in the service position.

Cables and hoses remain connected.

Move ENGINE BONNET/HOOD INTO SERVICE POSITION .

Cut through windscreen adhesive bead at bottom.

Fig 2: Lifting Out Windscreen

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Lift out windscreen with special tools 51 3 010.

Pull off adhesive tapes all round.

Installation note:

If necessary, replace defective EXPANDING FOAM TAPE (1).

IMPORTANT: Press down or bond the expanding foam tape (1) right before installing the windscreen with special tool 51 0 300 . Relaxed expanding foam tape could crush cement bead (leaks, wind noises).

Fig 3: Identifying Expanding Foam Tape On Lower Edge Of Defroster Channel

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Replacement

Attach new expanding foam tape (1) to lower edge of defroster channel (2).

Expanding foam tape (1) may only be stuck up to corner points of defroster channel (2).

Stick on expanding foam tape (3) (120 mm long) above vehicle identification number.

Fitting spacer buffers

IMPORTANT: Completely remove remnants of semicircular spacer buffers still present (2) (windscreen breakage).

Fig 4: Identifying Windscreen, Semicircular Spacer Buffer And Adhesive Bead

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Stick on two new semicircular spacer buffers (2) as follows:

310 mm to left/right of center window frame aperture
on right and left sides in window corner

Windscreen
Semicircular spacer buffer
Adhesive bead

Installing the windscreen frame sealing

Refer to removing and installing/replacing WINDSCREEN FRAME SEALING .

Section, cowl panel, top

Preventing wind noise on top of windscreen:

Windscreen (1) must be lower than roof outer skin (2). The bridge (3) of the windscreen frame sealing therefore serves as a spacer buffer for the top windscreen (1).

Dimension A ~ 8 mm.

Fig 5: Identifying Windscreen And Roof Outer Screen With Bridge

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NOTE: Depending on the installation position of the windscreen frame sealing (later installation), dimension A may slightly deviate from the design specifications.

Installation note:

Keep the contact pressure when bonding the windscreen (1) light enough so that a later removal of the windscreen frame sealing can be ensured.

Overview for windscreen cementing (E89):

Fig 6: Overview For Windscreen Cementing (E89)

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Attach special tool 51 3 010 twice to tool trolley. Moisten suction surfaces and tension windscreen from outside.

If reusing removed windscreen, remove residual adhesive down to 0.5 mm.

If necessary, mount new rubber frame (5). Observe center markings in so doing.

If necessary, press expanding foam tape down with hand roller.

Virtually vertical part (B) of adhesive bead (1) must be positioned to rubber frame (5) and windscreen outer edge (6).

Spread bead joint with special tool. 00 9 322

NOTE: Adhesive area for plastic adhesive tapes (1) must be free from grease and dust.

Stick two yellow plastic adhesive tapes (1) to roof at distance (A) from outside corners.

Length: 400 mm

A = 250 mm

Fig 7: Identifying Plastic Adhesive Tapes Position On Roof

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Working on windscreen (1) carefully with special tool 51 3 010 :

position windscreen first at top
Align sides evenly
then insert at bottom and press down
secure in terms of height in this position at top with two yellow plastic adhesive tapes (2)

Fig 8: Identifying Plastic Adhesive Tapes And Special Tool (51 3 210) On Windscreen

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