Thread Number: 43233
/ Tag: 50s/60s/70s Vacuum Cleaners
Sheared screw of rear axle on Kirby Classic 1CR |
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Post# 451848 , Reply# 1   4/21/2022 at 22:40 (734 days old) by huskyvacs (Gnaw Bone, Indiana)   |   | |
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RE: the motor
you never wash any motors that have cardboard or cotton/asbestos...whatever insulator material on the field coil, for obvious reasons, it will decay and expose the motor to a short. Also some chemicals can melt down the shellac coating on the windings which is also not good. Fan collectors mostly agree on mineral spirits and gentle brushing. Must use non-chlorinated solvents. Not sure how or what to use to rebuild the insulators on the windings. Friction tape maybe. |
Post# 451849 , Reply# 2   4/21/2022 at 22:59 (734 days old) by Rowdy141 (United Kingdom)   |   | |
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Is the tip of the screw visible on the inside of the housing? If so, pliers/Mole grips might grip the tip. It's a lot of work to dismantle it all again, but it may save you a lot of grief.
A very fine drill bit (sewing needle size) in a Dremel will work, with care. Be sure to limit the depth it can travel, so you don't go too deep and into the housing. You don't need to drill out the entire screw, just enough to get another tool in there. Try cutting a slot into what's left of the screw. So a small, flat screwdriver will fit. Try WD-40, Penetrating oil, or heating & cooling, to help free-up the bond between housing and screw. Try watchmaker/clockmaker tool suppliers for an even smaller Screw-extractor? They must exist. Can you spin your smallest screw-extractor in a drill, to file it thinner/narrower while still retaining a cutting edge? You only need it to work once. |
Post# 451852 , Reply# 5   4/21/2022 at 23:32 (734 days old) by KirbyClassicIII (Milwaukie, Oregon)   |   | |
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Post# 451914 , Reply# 6   4/23/2022 at 01:18 (733 days old) by MadMan (Chicago, IL, USA)   |   | |
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I look at it this way. If you sheared the screw by (over)tightening it, the screw is not stuck. It's just sitting there loosely. Some patience and gumption will get it out. Drilling is a last resort for this situation. You will only make it worse, or damage the hole. Just baby it out. I'd try poking it with a safety pin. If it's stubborn, try a VERY sharp pointed punch, and GENTLY tap it in a counterclockwise direction. Chances are good you can just unscrew it.
Unless, for example, you cross-threaded it, then drilling it out is the way to go. Extractors suck. They're tapered. The very act of jamming it in the screw expands the screw and makes it even MORE stuck. Unless you had a significant amount of screw sticking out of the hole. But in that case, you wouldn't need an extractor! They're a moot point if you ask me. |