How To Re-Wire A Potted Motor, Business Office 13: Cutting In Addition To Prepping The Motor Leads


Now that we’ve got the motor equally opened upwards equally possible, we’re going to cutting the motor leads at specific points to laid for soldering novel ones on.

First, rattling important, delight orient your motor equally shown inward the photograph above: The champaign nub is to the left, the bobbin winder is at the take house right. We involve to convey our motors oriented the same agency as well as hence when I country “right/left/up/down” you’re non getting confused as well as cutting the incorrect thing.


Now from this perspective, when you lot hold off inward betwixt the nub as well as housing, you lot run into the motor leads tied into a knot: 


To the correct of the knot, the ii motor leads--bound together within a rubbery hose, if it hasn’t rotted away yet--go out through a hole inward the motor housing.

We’re going to cutting those motor leads off only to the correct of the knot. Cut it equally to a greater extent than or less the knot equally you lot perhaps can. (When you lot larn skilful at this you’ll live on cutting it off at the left of the knot, but if this is your offset time, stick amongst the right.)



After snipping it, you lot tin post away instantly line the cut-off business office of the motor leads out of the housing as well as larn rid of them. 



Back to the knot. Very gently undo it amongst your fingers. Some of the one-time insulation may crumble off inward the process, as well as that's fine; the to a greater extent than that comes off, the better.


However, equally you lot create this, live on rattling careful non to house stress on the business office where the motor leads connect to the windings.

Whether take house wire (shown here) or bottom, don't stress the motor leads where they larn inward the winding!

After nosotros undo the knot, nosotros convey this:


I carefully stretch the newly-cut tip of the bottom motor Pb out, as well as hence you lot tin post away detect that it is longer than the motor Pb upwards top.


That’s because when they’re tied into a knot, the knot needs to live on close the take house of the motor, non the bottom. See the hole where the motor leads volition eventually come upwards out?


Well, the knot nosotros necktie volition live on only on the within of that hole. That’s why the leads are unlike lengths. Don’t worry if you lot don’t sympathise this correct now, only follow the steps below as well as you’ll live on fine.

Cut the take house motor Pb as well as hence that it’s most an inch.


Then cutting the bottom motor Pb most an inch as well as a one-half long. (It’s of import to larn these lengths correct as well as hence the knot ends upwards inward the correct house when nosotros unopen the motor up.)


You’ll notice I’ve removed most of the one-time insulation on the motor leads yesteryear gently scraping it off. If your insulation doesn’t desire to come upwards off, you lot tin post away role your wire strippers to strip most 3/4 of an inch of insulation off, which volition leave of absence you lot room to solder. (Now you lot tin post away run into why I similar using the Katapult wire strippers: They don’t house whatsoever stress on the wire where it connects to the windings.) You’ll likewise notice I left some of the one-time insulation on the bottom of the bottom motor lead. That’s fine, it’s non doing whatsoever terms at that topographic point since it’s non oily, as well as we’re going to embrace it upwards after anyway amongst heat-shrink tubing.

Next I set the motor upwards on blocks, as well as hence that I’ll convey room to larn the soldering atomic set out 26 inward there. As I'll convey to concur the soldering atomic set out 26 steady, I desire to live on able to comfortably residuum my manus as well as run into what I'm doing.


Finally, braid the ends of the motor leads as well as hence that they won’t fray when nosotros braid them into the novel wiring. Here I’ve braided the bottom lead, but non the take house yet, as well as hence you lot tin post away run into the difference. If nosotros tried connecting the take house motor Pb (in the soil shown here) to a novel wire, it would fray similar crazy.


We're nearly laid to solder the novel motor leads on.

Go on to: Part 14, Replacing the Motor Grommet

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