Re: Power window failures
Posted by HH56 On 2014/6/29 19:42:23
55-6 original motors were Delco and had internal "thermal protection". Those motors had a habit of the worm at the end of the armature breaking off as well as general non specific failures due to working pretty much at the maximum. In addition to the broken worms, I know more than one in our collection had overheated and burned. IMO, the geometry of the regulator puts a lot of stress on the motors, particularly the HT rear quarter windows. As they get older, lack of lubrication, the felt in the window channels bunching up or binding all add to the stress.
The switches are another failure item because they have to take the full motor current even in the stall condition and the actual contact area inside the switch is very small. You will frequently find upon opening the switch one of the contact buttons burned to the point it cannot make contact any longer.
The motors you refer to with the external breakers are the Leece-Neville replacements Studebaker came up with when the originals were starting to get hard to come by. They issued a template and kit with instructions for mounting the motor and added breakers in the Packard. No idea if they were something Stude had been using or if sourced directly as a replacement.
Here is an example of the worm breaking off.
Attach file:
(21.70 KB)
The switches are another failure item because they have to take the full motor current even in the stall condition and the actual contact area inside the switch is very small. You will frequently find upon opening the switch one of the contact buttons burned to the point it cannot make contact any longer.
The motors you refer to with the external breakers are the Leece-Neville replacements Studebaker came up with when the originals were starting to get hard to come by. They issued a template and kit with instructions for mounting the motor and added breakers in the Packard. No idea if they were something Stude had been using or if sourced directly as a replacement.
Here is an example of the worm breaking off.
Attach file:
(21.70 KB)
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