Yes I got it that you got it working, I was just trying to add a little more info, when working with nylon anyway. Some plastics shrink with heat and age, which could be why yours cracked (age). Anyway, good job on the fix! Also, some types of plastic can swell if oiled.
Tony
On 8/29/2025 8:34 AM, Nigel Pugh wrote:
This had split where it was fitted onto a metal shaft, and the split had caused it to be wider/snugger than it should have, and some burring around the split. I'm doubting whether it's actually nylon, it just looks like some cheapo 1970s plastic. As I've used this since the early 1990s pretty much daily, I can only assume that the split has happened recently as the problems have only occurred this year, and only noticeable when the solenoid has to punch up a high number. Once it is stuck, yours stuffed for making more wallbox selections until you manually reset it. But now it's working fantastic again, and I've bought a parts stepper too, just in case, as this certainly doesn't look like a part you could easily make without a fair amount of hassle. Nigel
On 29 Aug 2025 at 12:47, Tony Miklos via Jukebox-list <jukebox- list@lists.netlojix.com mailto:jukebox-list@lists.netlojix.com> wrote:
The nylon does not get "waxy" when it swells, not that I have ever seen anyway. I just expands a little bit. Probably not enough to notice, but enough for snug fittings to bind.
On 8/28/2025 9:15 AM, Nigel Pugh wrote:
Thanks Tony. The nylon luckily did not feel particularly waxy and seemed to file well when spinning in the drill. I will check out the lubrication. I've got a couple of other stepper manuals for Rowe and Seeburg ones, somewhere in those it may say. I've had it on all day and am confident it's not failed any selection. Hopefully I can put this one to bed now. Regards Nigel
On 28 Aug 2025 at 13:41, Tony Miklos via Jukebox-list <jukebox- list@lists.netlojix.com <lists.netlojix.com> <mailto:jukebox-list@lists.netlojix.com <lists.netlojix.com>>> wrote:
Sounds great. Best to check the manual about lubrication. For example, on EM pinball machines with "steppers", the normal routine was to clean and re-grease the contacts/wipers. Although I use oil instead of grease. That's how I was taught, and it seems to work quite well.
If you ever run into some nylon plastic that is swollen (it actually absorbs water!) when sand paper doesn't cut it, and a regular file is of little use, use this file. It works great on slippery nylon. https://www.baersupply.com/v2/wbsc/product/catalog/7367718 https://www.baersupply.com/v2/wbsc/product/catalog/7367718 https://www.baersupply.com/v2/wbsc/product/catalog/7367718 https://www.baersupply.com/v2/wbsc/product/catalog/7367718> I forgot where I bought mine, probably on Amazon.
Tony
On 8/28/2025 4:21 AM, Nigel Pugh wrote:
Right, always good to sleep on an issue and see if your brain throws up another solution. I dismantled the nylon stepper gear as it was pretty stiff in its bushing. And there was the problem, the nylon shaft had a split and consequently had expanded and was causing the stiffness. Spun it in the drill with some fine sandpaper taking off the burr around the split and it's running like a dream now. Nigel
On 28 Aug 2025 at 05:46, Nigel Pugh via Jukebox-list <jukebox- list@lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>> <mailto:jukebox-list@lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>>>> wrote:
I'm not aware that lubricant should be used or not, I will look onto that.
However, in this instance it won't be the cause of the problem as I can remove the paxolin disks completey to eliminate them and the problem still occurs.
Spring wound too tight - resets nicely but the solenoid can't advance it to the high numbers due to spring pressure.
Spring wound too loose - advances nicely but fails to always reset due to lack of spring pressure.
So the question is how do I set the spring pressure correctly. There must be a "number of turns" as to how tight you wind it up.
Nigel
> > On 27 Aug 2025 at 22:23, Tony Miklos via Jukebox-list <jukebox-list@lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>> <lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>>>> wrote: > > > > > On 8/27/2025 5:09 PM, Nigel Pugh via Jukebox-list wrote: > > > > > >> Recently having issues with my Rock Ola 470 stepper. I think the stepper is a 1768 or 1769. > > > >> The problem is when a high number is selected, upon reset, the number wiper sometimes remains there and doesn't reset back to it's starting position. > > > >> I've had this set up working fine for over 30 years. > > > >> Anyhow, I dismantle that part of the stepper and the spring that provides the return tension unwound itself, so I had to guess how many times to re wind it to tension it back up. > > > >> It's driving me nuts. Too much tension and the pecking solenoid doesn't have strength to push the gear. Too little tension and it doesn't return every time. There are no other issues, nothing tight or seized. > > > >> So my question is, is there a number of winds specified that you have to wind it up to? Instead of me guessing, which could take forever, is there a spec or instruction how to re tension it ? > > > >> Regards > > > >> Nigel, uk > > I don't know about that unit, but some similar units in other equipment > use lubricant on the wiper contacts. Should yours have it, and is it lubed? > > -- > Tony Miklos > Tony's Jukebox Repair > > _______________________________________________ > Jukebox-list mailing list -- jukebox-list@lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>> <lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>>> > To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>> <lists.netlojix.com <lists.netlojix.com> <lists.netlojix.com <lists.netlojix.com>>> > %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s > Searchable Archives: http://jukebox.markmail.org/ http://jukebox.markmail.org/ http://jukebox.markmail.org/ http://jukebox.markmail.org/> http://jukebox.markmail.org/ http://jukebox.markmail.org/> http://jukebox.markmail.org/> http://jukebox.markmail.org/>> >
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