Quarter Window Glass: Adjustments

51 37 154 Adjusting Rear Left Or Right Side Window

Special tools required:







Precondition:
- Vehicle must be standing on its wheels on a level floor
- Door window glass correctly adjusted







Necessary preliminary tasks:
- Remove rear window cavity seal
- Open retractable hardtop
- Move side window upwards (close)







Ideal adjustment, transversal direction:
Side window glass (1) must be situated at distance (A) to body (2).

Distance A = 7±1 mm

Measuring points in B-pillar area and release for rear screw connection of side window glass (1).

Adjusting transversal direction:
Remove side trim upper section .

Slacken screws (3) and adjust distance (A).

Tightening torque 51 37 4AZ .







Ideal adjustment, longitudinal direction:
Side window glass (1) must be positioned at distance (A) to door window glass (2).

Measurement (A) = 12 ± 1 mm

Parallelism deviation ± 1 mm.

Side window glass (1) may have a max. underprotrusion (B) to door window glass (2).

Measurement (B) = 2 mm







Adjusting longitudinal direction:
Slacken screws with special tool 1 51 3 310 .

Adjust longitudinal direction by moving side window glass (2).

Tightening torque 51 37 2AZ .

Installation:
The specified torque moment 51 37 1AZ (MDE) is reduced when using special tool 51 3 310 . Depending on the torque wrench used, this must be calculated in accordance with the adjacent overview:







MDE = Torque to be set
MDV = Prescribed torque (without special tool)
lj = Standard adjustment length with adjusting tool
l1 = Effective length of torque wrench
l2 = Inside dimension of adjusting tool
lw = Inside dimension of insertion tool (here lw = 145 mm)

NOTE: If screwing is performed from the inside of the door (removed door trim panel), the tightening torque to be set 51 37 2AZ (without special tool) must be observed.







Checking retraction depth:
- Close retractable hardtop
- Open door window
- Attach special tool 51 3 080 to side window glass
- Close side window completely
- Measure retraction depth

NOTE: 2 51 3 080 items of special tool are required for adjustment of retraction depths.







Measure retraction depth (A) in areas (1 to 2).

Measurement (A):
(1) = 8 ± 2 mm
(2) = 8 ± 2 mm

If necessary, check or readjust settings on:
- Door window glass
- Side window

check or readjust.







Ideal adjustment, pre-tension:

NOTE: Pretension can be checked with or without window cavity cover strip. Pretension is 1.0 mm greater with window cavity cover strip. Magnet in special tool 51 0 341 creates the correct door window glass pretension on the seal system for measurement. No force must be exerted on the door or door window glass during measurement.

Insert special tool 51 0 341 in rotary striker of door lock and close rotary striker manually. Carefully close door.







Measure gap (A) between side window glass (1) and inside edge of door window glass (2).

NOTE: Measuring point 10 mm below top edge of window glass.

With window cavity cover strip fitted (front and rear): A = 20 +1 mm

Without window cavity cover strip fitted (rear): A = 19 +1 mm







Adjusting pre-tension:
Remove rear window cavity cover strip .

Turn adjusting screw (1) 51 2 220 with special tool until correct pretension is reached.

NOTE: With hardtop closed, side window glass (2) must run correctly into hardtop seals (check only when window cavity cover strip fitted).

Checking adjustment:
Open door window and side window.

Close both windows simultaneously and check run-in of side window glass to door window glass.

Close retractable hardtop.

Hardtop seals must not be damaged.







Check run-in of both windows in hardtop seals.