51 32 154 Adjusting left or right front door window glass

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Precondition:

Vehicle must be standing on its wheels on a level floor
FRONT DOOR correctly adjusted to fit
If necessary, close retractable hardtop.

IMPORTANT: When closing, the door window glass must not jam on the trim strip in any area of the window (window glass breakage).

If necessary, incoming check

The following incoming checks must be carried out prior to every adjustment operation:

NOTE: Incoming check must be carried out with the window cavity cover strip fitted.

Denormalize POWER WINDOW
Measure retraction depths with special tool 51 3 080.
Initialize power windows

Necessary preliminary tasks

Denormalize POWER WINDOW
Remove FRONT DOOR TRIM PANEL
Remove SOUND INSULATION
Remove OUTER WINDOW CAVITY COVER STRIP (not for checking pre-tension)

Ideal adjustment, longitudinal direction

Open door window.

Fit special tool 51 0 360 in front door and press back as far as it will go.

NOTE: Special tool 51 0 360 must rest against door and reach stop on guide (1).

Fig 1: Fitting Special Tool (51 0 360) On Front Door

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Ideal adjustment, retraction depth

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

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

Fig 2: Identifying Special Tool (51 3 080)

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Use fabric adhesive tape in area A to tape special tool 51 3 310. Place suitable foil between glass and special tool (paint and window may get damaged)

Fig 3: Identifying Fabric Adhesive Tape On Special Tool (51 3 310)

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Adjusting longitudinal direction/retraction depth

Slacken screws (1) with special tool until door window glass can just be moved.

Tightening torque 51 32 2AZ .

Fig 4: Identifying Screws And Special Tool 51 3 310

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NOTE: Ensure window glass does not become bonded to support (1) in the blue area (A).

(increased breakaway torque)

Fig 5: Identifying Window Glass Support Area

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Attach special tool 51 3 010 to door window glass (1).

Adjust retraction depth and longitudinal direction of door window glass (1) by moving door window glass with special tool 51 3 010.

Fig 6: Attaching Special Tool (51 3 310) To Door Window Glass

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Adjusting retraction depth

Measure retraction depth "C" in areas A and B.

Retraction depth C:

C = 4.3 ± 1 mm in area A

(measuring point distance 30 mm to mirror triangle)

C = 8.5 ± 1 mm in area B

(measuring point distance next to dot screen)

Fig 7: Identifying Retraction Depth

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IMPORTANT: Front door must open and close without the door window glass touching the roof trim strip.

Adjusting longitudinal direction

Close door and door window glass.

Door window glass (1) must touch seal (2) in area of B-pillar in accordance with measurement "A".

Measurement A:

A = 12 ± 1 mm

Fig 8: Identifying Door Window Glass And Seal Touching Distance

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Installation:

The tightening torque to be set 51 32 1AZ (MDE) is reduced when special tool 51 3 310 is used. Depending on the torque wrench used, this must be calculated in accordance with the adjacent overview:

Fig 9: MDE Calculation Diagram

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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)

Tighten down screws (1) with special tool 51 3 310.

Tightening torque 51 32 2AZ .

Remove special tool 51 3 010 from door window glass.

Fig 10: Identifying Special Tools (51 3 010 And 51 3 310) On Door Window Glass

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Top edge of door window glass (1) must be adjusted parallel to contour (2) of water drain.

Seals on A-pillar and on retractable hardtop must not be damaged.

When the door window glass is retracted into the seals, the seals must not distorted.

Fig 11: Identifying Door Window Glass And Water Drain Counter

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Ideal adjustment, pre-tension

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

Fig 12: Identifying Special Tool (51 0 341) On Rotary Striker Of Door Lock

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

Slide special tool 51 0 342 at distance "B" to door window glass side edge into seal (1) and measure dimension (A) to outside edge of door window glass (2).

Dimension "A" with window cavity cover strip:

A = 30 ± 1 mm

Dimension "A" without window cavity cover strip:

A = 29 ± 1 mm

B = 40 mm

Fig 13: Sliding Special Tool (51 0 342) On Door Window Glass

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Adjusting pre-tension

Slacken nut (3) with reversible ratchet (2) of special tool 51 3 300 (consisting of 51 3 301, 51 3 303 and 51 3 304).

Turn knob (1) on special tool 51 3 300 to turn stud (4) and thereby alter the pretension.

Tighten nut (3).

Tightening torque 51 32 6AZ .

Check adjustment, repeat procedure if necessary.

Fig 14: Turning Knob On Special Tool (51 3 304)

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NOTE: After completing adjustment work, it is essential to INITIALIZE the power window regulator.
Checking run-in of door window glass:
Door window glass must strike the inside of the seal.