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I have an erratic power window on the pass side of my 56 Caribbean h/t.- works at times & then may do nothing on either switch. The problem seems to be in the motor, as power is at the switch. The manual says there is a lock on the arm from the gear, and I have a couple of spares that have this lock set-up, but my Caribb has what looks like a big rivet where the pin & lock should be. I don't know if someone replaced the original pin with a rivet before I bought the car, but it looks original as opposed to a home fix. As a result, I haven't been able to remove the motor to try to determine what's going on. Any ideas? { I guess I could remove motor & arms that connect to the window base as a unit}

Picture.

Cause I had no problem removing one on a Caribbean.

The motor is held to the regulator by three fairly long screws that go thru the gear housing portion of the motor assy into a threaded plate that is positioned behind the motor support pad. Once the screws are out the motor will lift off but the threaded plate will also be free and want to drop down. It needs to be held up while you lift the motor out so the pinion clears the plate and hole in the support pad. The bottom photo in this posthttps://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=25656&post_id=246637#forumpost246637 shows the motor and quarter regulator.

Both the HT front and quarter regulator assy are two parts. The motor and sector gear is in one part which is connected by a long bar to the second part that actually works the window. The front window is not as bad as far as load but one thing to look out for is when the window hits either stop and the motor is still energized the inner door panel metal flexes where the slot and large screw holding the second part of the regulator is located. Many inner door panels are cracked and weak letting the parts get out of alignment. The quarter regulator has essentially no mechanical advantage other than a spring which does not seem to help much. That motor is very stressed in the up direction. If there is dried lube or binding the motor could be overloaded to the point the thermal breaker inside the motor is tripping.

Attach file:

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  quarter window reg.jpg (258.22 KB)


  HT front window.jpg (312.68 KB)