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C-5+ with spur gear drive

Started by Charles Geiger, 05/08/2005 12:50AM
Posted 05/08/2005 12:50AM Opening Post
I hope this is a resolvable problem. We have a recent C-5+ (1990's)which was donated to our group. It is in near perfect condition. However, someone must have forced the optical tube to spin with the RA lock on. I took the inspection plate off and found the 12 tooth brass spur gear to be spinning on the 9V? motor steel shaft. It is a press fit and now spins freely enough so that the tube assembly will not stay put. Also, of course, we do not have a drive as the gear spins. The motor operates as the shaft spins. The only marks on the reduction motor are '45K' and 94/3 and made in Japan. It has a phone connector type connection which goes to the speed control. It runs on a 9V alkaline battery.

Is there a fix such as soldering or is there someone who offers replacement motors? No, I have not contacted celestron yet.

Thanks for any guidance.
Posted 05/08/2005 04:39AM | Edited 05/08/2005 04:41AM #1
Charles,
You can always try a drop of "lock tight" to see if it's going to work. As I recall, that particular gear had a hex screw to adjust tightness and keep the gear from spinning on the shaft. If not, I think your best bet will be sending it back to Celestron. I suspect they will repair it free of charge. They have done a lot of free work for me on scopes well over 10 years old and have never asked for payment. For the sake of reliability, I suggest sending it back for service. Celestron service is superb, and they do what they say they will. Good luck, -Kurt Horsley