by Rob-NYC »
Thu Oct 22, 2015 2:31 am
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
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