CMC Pittman motor issues

Owen, probably not your issue, but first thing to do is oil both ends of the shaft and let it work in. I have seen a few that desperately needed oil after 40+ years. We tend to think of can motors as not needing service, but they do.

Steve

Steve - Thanks for your suggestion. I had a "no oil" problem with another engine, but this one seems to be well oiled.

Pittman motors was bought by Ametek a number of years ago. I've used many of their motors in several designs for my company over the years. Their part numbers may have changed. Probably not worth repairing. Many mail-order electronics houses carry Pittman/Ametek motors and I think you can order direct from Ametek as well. Not cheap in 1Z2Z quantities. Ebay-unfortunately, may be your friend in your search as well.

Many Pittmans can be opened up easily. Most of the time an open winding is at the point were the wire is soldered to a commutator segment. Worth a look.

Pete

CJ, I have begun scouting on ebay, nothing so far. May be a long hunt.

And Morton, as per your suggestion, I have an old time radio repair guy lined up in the morning to follow up on your suggestion re: open winding/soldered connection issues.

Thank you both for taking time to respond!

Win86 my old Williams by Williams FM Trainmasters have the large old pittman motors with several screws holding the case on i did at one time open 1 up out of curiosity it is pretty simple if yours unscrews to check the commutator and the solder joints.

Also bought some from the bay NOS Ametek's Pittmans date 07 for spare parts  for the Williams engines because the brush assembly are the same and replaceable.

My motor is running! The "old time radio repair guy" was able to see, under high magnification, the break in the connection between a winding and its commutator segment. It appeared to him that the wire was fed through a hole in the segment and crimped only. After some cleaning, re-crimping and a touch of solder all is well.

Again I thank those who offered suggestions. They did lead me to a fellow who understands circuits and was able to make the needed repair.

WIN86 good to hear the pittman motor is fixed.

Good to hear Owen.

Steve