IF the rear 126 is like the rear 123, you'll need to pull the window reg/motor as an assembly. They are held together by 3 Phillips machine screws.

There are also 3 bolts holding the ASSEMBLY onto the door frame (plus the the white plastic thing thats broke). There is a window repair kit avail from Fastlane and the dealer ($5.00?) that includes a new pin, plastic guide and a cheap a** fastener.

You'll need to drill out the old pin with the reg/motor out of the car. Having access to a drill press and good drill bits would help (a lot!).

If someone pipes up and says the 126 is different from the 123 then ignore my response.

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)