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  #1  
Old 09-11-2001, 04:07 PM
calidt
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86 300E Right Rear Window Regulator

Passenger rear window inop in window closed position, others OK. No sound...nothing when switch is activated.

Checked switches, power arriving at both. Removed door cover and clear plastic carefully and with few problems.

No broken plastic or parts visible. Removed 3 bolts on "motor" section and bolt on lower arm to right of "motor." Also removed bolt at top of metal arm that window slides down on. Regulator is still stuck in place and I cannot get it out to examine it. Help!

Thanks!
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  #2  
Old 09-12-2001, 12:29 AM
Abaloneman's Avatar
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Join Date: Jan 2001
Location: Palos Verdes Est., CA
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Exclamation Rigth rear window common problem

This is a common problem with MBZ. I had a 240D with the same rear right window inop, and now a 300E with right window inop. I hope someone with the solution to an apparently very common problem replies with the solution.
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Old 09-12-2001, 12:14 PM
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I lost BOTH regulators on my 300E within a year of each other. I've replaced both at the tune of $140 each.

Mine however, broke exactly the same. The plastic sliders on the track disentigrated, and the cable ended up kinked and eventually buggered up at the motor spool assembly. They would go down okay, but would only raise up about halfway. I thought the regulators were reasonably priced, and easier to switch out than trying to surgically rebuild the drive assembly.

The assembly is held in place by 4 10mm (I think) nuts. One at the top and three at the bottom. Once the window is removed from the slider, the assembly can be removed by tilting the top of the track sideways, then carefully removing the assembly out the bottom part of the door. Make sure you have disconnected the electrical connections (of course).
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Old 09-12-2001, 07:07 PM
calidt
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In your reply.... "Once the window is removed from the slider"

How? Thanks!
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  #5  
Old 09-13-2001, 12:36 PM
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The metal holder that the window resides in is a snug fit...but not glued on or anything, so if you can get the regulator to move the window down any, you can push the window back up and out of the metal track. This will give you the necessary room to move the regulator out of the door panel bolt slots and completely remove the assembly out of the door.

It is otherwise difficult to perform this operation with the window (and regulator assembly) in the fully closed position...there is no room for movement. If ou plan to replace the regulator anyway, you may try cutting the cable...just beware that the weight of the window will now slide down the track rapidly, so make sure you anchor it somehow, or you will have to deal with a broken window too.

BTW, watch out for all the sharp edges...you may have noticed that there are lots of them. I have a few battle scars from that DIY job too.

Hope this helps.
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  #6  
Old 09-13-2001, 02:16 PM
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Right rear on my 300E has the same problem so last night I decided to tackle it. After chilling a six pack and consulting the MB 124 Body and Chassis Manual, I learned that the window was designed to be removed in the "open" position. Mine was closed! After a struggle and two beers I was able to push the unit away from the inner door enough to get a 19mm wrench on the two "shock bolts" that attach the bracket to the motor. This allowed enough slack to move it a little. I managed to remove the retaining clip from the bottom of the slide on the window and after another beer, wiggled the detached motor and bracket out of the razor lined slots with only a slight loss of skin. The saying about "Fools rush in where Angels fear to tread" was written referring to trying to repair the motor and regulator. My gears were worn and cruddy and after two hours and two more beers I still had a unit that didn't work properly. Take G-Benz' advise and snip the cable and order a new one. One point worth mentioning, be very careful when you pop the cover off the switch connector. There are six wires in there that spring out. Fortunately there is a color code in there to show where they all go. Good Luck!! In case you're wondering, that last beer was consumed sitting on my roller stool thinking about what a great teacher experience is!!
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