There are videos on YouTube showing how these starters are "rebuilt." Basically, with a few hand tools and can of spray paint, in a dirt-floor shack in Pakistan.
https://www.youtube.com/watch?v=SqpD4khzqbw On Sun, Apr 16, 2023, at 19:24, dan penoff.com via Mercedes wrote: > Here are the pictures: > > Wear on armature and spacer: http://penoff.com/photo_dump.html#2 > > Planetary gear set (in a plastic housing, I might add): > http://penoff.com/photo_dump.html#3 > > Amazing how powerful these starters are, but also how cheaply they’re made, > too. > > -D > > On Apr 16, 2023, at 3:00 PM, G Mann via Mercedes > <[email protected]<mailto:[email protected]>> wrote: > > Thanks !! > I have an ongoing interest in how and why things fail. > Since it was identified as a "rebuilt starter" it seems likely the > rebuilder failed to install the required fiber washer to keep the armature > from doing exactly what that one did... perhaps.. > Or, the bendix seized on the shaft and instead of traveling to engage, > pushed the armature forward... ?? > "If it can happen, it will, but only when you least expect it." > > On Sun, Apr 16, 2023 at 10:51 AM dan penoff.com<http://penoff.com> via > Mercedes < > [email protected]<mailto:[email protected]>> wrote: > > Because Grant put the idea in my head to do some failure analysis, I had a > couple of minutes to spare so I tore into the failed starter. I’l post some > pictures in a little bit, but suffice to say I was surprised! > > It does have a planetary gear set that’s internal, which was pretty cool. > Based on what I saw, the front edge of the armature windings were rubbing > against a metal spacer or cover between the armature and the planetary > gears. So much wear that the varnish was worn off the windings, meaning > they were shorting out. I couldn’t determine what had caused the end play > in the armature to allow it to move against this plate, but it’s clear that > was not a good thing. > > I couldn’t get the solenoid off of the main casting, as the phillips head > screws they used were driven in with an impact or may have had thread > locking compound on them. I’m pretty satisfied that the armature was > shorting to ground, causing enough of a voltage drop that the solenoid > wouldn’t pull in, letting the motor freewheel with the armature rubbing the > metal plate, which was the source of the noise I was hearing. > > -D > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
