I just performed this repair on my 126 car. I have no idea how anyone could use a "nut & bolt" approach. There's no room in the sliding area where the bushing goes for the bolt head and the bushing.

I went to Home Depot and bought a 2" long - 5/16" clevis pin. I cut the pins length so that 2 holes remained. I ran the pin thru the hole in the bushing, slid the bushing into the rail, affixed the arm to the end of the clevis pin, then secured with a cotter pin.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

That works, too, but I used the rivet that came with the jaw and drilled about 1/16 hole near the end and put a cotter pin thru the hole. Regreased the rail and it works better than new.

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95 E420 ( 76K) SOLD
85 380SE(125k)
95 SL500(72k)

I solved my problem by calling my friendly auto repair guy, five minutes from the house. He said bring it in, and he had it done in a few minutes minutes. No charge. He used an air driver on the locking nut and wedged a screw driver in the window channel behind the screw head. I cringed thinking he'd break the plastic sliding jaw but it didn't break and the screw is secure.

I looked at the clevis pins but thought they were too long, even cut off, but I didn't know how much clearence there is in the door panel as the window is run up.

The "bolt" I used is probably more accurately called a flat head screw with a slot.

I would really be interested in hearing from those who have used a bolt/screw and nut solution and how they actually assembled it and the jaw into the window channel. I suppose this will happen in my other windows sooner or later and I'd like to know to do it. I'll probably go the clevis pin or maybe drill the rivet and use a cotter pin.

Thanks for your responses.

what kind of grease did you use on the reinstallation? thanks.

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87 300e (white/black; amg body kit)
88 300ce (red/cream; amg body kit)
93 300ce cabrio (white/blue/blue top)
93 300ce cabrio (black/grey/black top)
98 ml 320 (totaled @ 137,000 miles)
99 clk320 (black/grey/black top)

I used Napa Sylglide...seems to be a good multi use grease for this type of thing and hinges, etc

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95 E420 ( 76K) SOLD
85 380SE(125k)
95 SL500(72k)

Thanks Gary

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87 300e (white/black; amg body kit)
88 300ce (red/cream; amg body kit)
93 300ce cabrio (white/blue/blue top)
93 300ce cabrio (black/grey/black top)
98 ml 320 (totaled @ 137,000 miles)
99 clk320 (black/grey/black top)

I too have a 126 Body with a Slide Jaw that literally EXPLODED. I guess there is not way to use the existing rivot at the end of the Regulator arm? You have too drill it out? What length Bolt did you use?

I have attempted to fix this 2x and I am getting frustrated! Thanks...

Phil
1991 350SD