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Rock-Ola 1493

Posted: Thu Oct 22, 2015 1:18 am
by daysgoneby
I am working on a Rock-Ola 1493, problem I am having is the record basket has a rough rotation. I also noticed that the selection made is not the same one displayed in the record playing window but the correct record is pulled from the basket. Would a bad set of motor brushed cause this rough rotation and vibration of the record basket? Thanks for any help ahead of time!

Re: Rock-Ola 1493

Posted: Thu Oct 22, 2015 2:31 am
by Rob-NYC
The more likely cause on those R-Os is gear backlash from the magazine motor pinion shoved too tightly against the gear on the magazine.

On these machines there is a bit of compromise between the tight gear mating needed for accurate indexing and backlash. This gets a bit worse as the motor bearing wears and becomes sloppy.

Both DC motors should be taken apart, cleaned out and lubed at which time you can check the brushes.

Rob/NYC

Re: Rock-Ola 1493

Posted: Thu Oct 22, 2015 9:59 am
by clones
Hi
The record playing display can be adjusted. There are two small grub screws which can be loosened to aid adjustment
clones