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Door Window Seal Weather Stripping Replacement
 
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Pelican Technical Article:

Door Window Seal Weather Stripping Replacement

Tom Morr

Time:

1.5 Hours

Tab:

$60 to $175

Talent:

*

Tools:

Phillips screwdrivers, T9 Torx bit, trim wedges

Applicable Models:

Mercedes-Benz R170 (1998-04)

Parts Required:

Door seal, window sealing rails.

Hot Tip:

Place the new seals in the sun to relax and stretch while removing the old ones.

Performance Gain:

Seals the interior from the elements.

Complementary Modification:

Lube the window regulator and door lock while the door panel is off.

Rubber and plastic parts come with one guarantee: They'll eventually degrade and need to be replaced. Mercedes-Benz door and window seals fall into this category.

Thanks to precision German engineering, these seals are fairly easy to replace. The doors circumferential seal seats in a channel. No gooey weather strip adhesive is required, in contrast to many other cars.

If the inner window sealing rail is okay, the rest of the job can be done in mere minutes, since the door panel won't have to be removed. The inner rail is attached to the panel, so the whole assembly needs to come out to replace this rail. Please refer to the door panel removal article for details.

Along the same lines, the outer rail is easier to remove and replace if the side mirror is loosened or removed. Please see the article on this procedure. Lowering the window all the way creates extra workspace for rail removal and replacement.

To increase weather stripping life, a variety of car-care products are commonly used. Silicone greases are popular, and the ubiquitous silicone sprays are generally regarded as better than no treatment. Other alternatives are leather/rubber/vinyl protectants and ones marketed specifically for weather stripping.

First, remove the trim piece at the rear of the window channel.
Figure 1

First, remove the trim piece at the rear of the window channel. Use a T9 Torx bit to remove the two screws (yellow arrows).

To remove the inner window rail, the door panel must come off.
Figure 2

To remove the inner window rail, the door panel must come off. They often lift off together, then the rail can be unclipped from the panel. Our project car's rail (purple arrow) was glued to the panel. They separated when the panel was lifted away to disconnect the electrical plugs and door handle cable. Reverse the steps to replace the rail.

The outer rail's tail end is secured to the inner door with a piece of tape (purple arrow).
Figure 3

The outer rail's tail end is secured to the inner door with a piece of tape (purple arrow). The circumferential door seal's end (yellow arrow) has a smaller diameter that inserts in the outer window rail's tail (seePicture 1).

The outer rail's front end tucks under the side mirror.
Figure 4

The outer rail's front end tucks under the side mirror. The mirror can either be loosened or removed to create rail clearance. Three bolts and a wiring plug are easily accessible on the inner door.

No adhesive is used.
Figure 5

No adhesive is used. The outer rail is tongue-in-groove mounted on the door and can be simply peeled up and away. Installation reverses the removal steps.

The main circumferential door seal can be pulled out of its channel.
Figure 6

The main circumferential door seal can be pulled out of its channel.

The door limiter arm (purple arrow) is in the way but the door seal can be maneuvered around it.
Figure 7

The door limiter arm (purple arrow) is in the way but the door seal can be maneuvered around it. If the door panel is already off, however, the limiter can easily be unbolted. (Please see that article for details.)

The unbolted limiter arm is visible in the speaker opening (purple arrow).
Figure 8

The unbolted limiter arm is visible in the speaker opening (purple arrow). A narrow, blunt object is useful for pushing the door seal into its channel.

Replacement sealing pieces are sold individually.
Figure 9

Replacement sealing pieces are sold individually. Part numbers: Outside Sealing Rail #1707200424, Inside Sealing Rail #1707250365, Circumferential Door Seal #1707270330.

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