Re: Umpteenth power window motor failure

Posted by BH On 2012/7/31 11:41:40

What the pictures in this thread haven't yet shown is that the worm screw of the Delco power window motor armature turns a large-diameter, fine-tooth gear that directly turns a small-diameter, large-tooth, pinion gear, to provide some level of torque multiplication. I'm not able to tell whether that's sufficient, though.

However, since the same motor (and gear and pinion ratio) was used front and rear (on same side) regardless of whether it was two-door or four-door body or for door or quarter window of the 55/56 cars, I'd like to think that Packard engineers would have tested for the largest demand. Perhaps that's just wishful thinking on my part.

In a past thread, Randy Berger mentioned the lack of sufficient support for the armature - that a bushing could be retro'd.

I also wonder how much effect that tired, old, dirty, dried-up grease on the regulator and any worn-out window run channel or lining might have. My dad always cautioned me to lube the sector gear and pinion when the door trim was off - regardless of brand and even on vehicles with manual windows.