Front Door Window Glass: Adjustments

51 32 154 Adjusting Left Or Right Front Door Window

Special tools required:
- 00 9 318
- 51 3 080

Note:
- The end stop and pretension of the door window glass can be adjusted without the acoustic insulation being removed.
- Remove acoustic insulation.
- Requirement:
- Front door must be correctly adjusted to fit.
- Convertible soft top must be correctly adjusted.

Ideal adjustment:

Door window glass (1) must rest in area (A) on seal (2) (wind noises, water ingress).
Dimension (B) is measured approx. 80 and 370 mm from corner (3) of A-pillar towards rear.
Dimension (C) is measured on A-pillar.
B 4(+1) mm
C 3(+1) mm

Measuring retraction depth:

- Open front door
- Attach special tool 51 3 080 to door window glass
- Close front door and door window
- Measure retraction depth

Note: 3 items of special tool 51 3 080 are required for rapid adjustment of retraction depths.

Emergency operation:

Ideal adjustment:
Close door window glass (1).
Close door lock rotary striker with front door open.
Door window glass (1) now moves into end position.
Door window glass (1) must now retract in area (2) and A-pillar.

Note: Check/adjust presettings after removing or replacing power window lift.

Presetting of pretension and retraction depth (C):

Front guide roller (1):
Adjust measurement (E1), (F1) with feeler gauge (2) and end stop (G1).
E 1.9mm
F 2.7 mm
G 12 ... 13mm

Presetting of pretension and retraction depth (B):

Rear guide roller (1):
Adjust measurement (E2), (F2) with feeler gauge (2) and end stop (G2).
E2 1.9 mm
F2 1.9 mm
G2 12... 13 mm

Presetting of pretension, front:
Adjust measurement (H) between window lift rail (1) and inner door plate (2) and screw down.

H approx. 10 mm

Note: Special tool 00 9 318 (universal wedge) can also be used for adjustment.

Presetting of pretension, rear:

Adjust measurement (I) between window lift rail (1) and element (2) and screw down.

I approx. 1 ... 2 mm

Adjusting retraction depth:

- Open front door
- Open door window glass (1) up to measurement (A)
- Slacken screws (3)... (6)
- Attach special tool 51 3 080 (better 3 items) to door window glass
- Coat seal on A-pillar and convertible top with water
- Close front door and door window
- Adjust retraction depths by moving door window glass
- Open front door opposite
- Tighten down screw (3) through bore (2)
- Tighten down screw (6).
- Open door window glass (1) up to measurement (A)
- Tighten down screws (4) and (5)
- Measure retraction depth again

A approx. 250 mm

Caution: Check emergency operation.

Adjusting pretension and end stop, front:

Adjusting pretension:
Lever out end cap (1), slacken screw underneath.
Adjust pretension by moving window guide rail and tighten down screw.
Adjusting end stop:
Open complete door window glass.
Lever out end cap (2) and adjust end stop with screw underneath.

Caution: Check emergency operation.

Adjusting pretension and end stop, rear: