How To Re-Wire A Potted Motor, Business Office 7: Disconnecting The Motor Leads

Okay folks, fourth dimension for us to larn our hands on the machine.

Before removing the motor from your 201-2 or 15-91, nosotros must outset disconnect the motor leads. From hither on inwards we’re going to ask lots of dissimilar screwdriver bits, hence live certain to read the entries on proper screwdriver bits if you’re unclear on this area; if yous role the incorrect type of driver in addition to strip a screw inwards the middle of a motor re-wire, you’ll abide by it a huge hassle.

Step i is unplug the machine. Not at the wall, but at the end body.

Step ii is to take away the unmarried screw asset the end trunk on. (A Brownells fleck #270-5 fits perfectly.) You’ll abide by this screw has oft been overtightened, hence recall to press difficult into the screw equally yous unscrew it, to cut down the chances of strippage. After you’ve removed the screw, hold it safe, we’ll ask it i time to a greater extent than inwards a sec.

Gently describe the end trunk towards yous in addition to downwards. Now at this betoken you’re going to come across i of ii things:

Best-Case Scenario:

If yous come across this, you're lucky.

I telephone telephone this the Best Case Scenario because fifty-fifty though nosotros tin come across unopen to exposed wire that needs to live replaced, everything is withal build clean in addition to in that location is no crude damage. Which leads me to the adjacent example….

Worst-Case Scenario:

If yous come across this, you're unlucky. But don't despair, we'll larn to it.

This is a dissimilar machine than inwards the previous photo, in addition to equally yous tin see, we’ve got big problems. Never hear the exposed wiring in addition to cracked, rotted insulation--there is massive crude damage. Someone has over-oiled this machine, causing the wiring insulation to larn oily in addition to melt in addition to run into the end body. Look at how the calorie-free switch on the left is covered inwards thick, black, hardened goop.

Although this occupation is fixable, this is a LOT to a greater extent than run than the Best-Case Scenario, in addition to volition require a carve upward serial of entries. If your machine’s end trunk looks similar this one, permit me know inwards the comments in addition to I’ll laid out preparing that Worst-Case Scenario serial of entries. In the meanwhile I’ll croak on on hither for the Best-Case Scenario machines.

Unwire the end body

Remove the 3 thumbscrews from the end body. There are exclusively ii motor leads, but nosotros take away all 3 thumbscrews because the wires are oft roofing i another.

Next, gently describe the band connectors off of the brass studs. You may desire to grade the wires amongst tape, according to what coloring they connect amongst (red, dark or yellow.) And live vigilant--there may or may non live a brass washer on plough over of the band connectors, in addition to if yous describe them upward likewise fast, the washer may larn flight off into space. It’s happened to me in addition to I never saw that washer again.

Gently describe the rings off of the brass studs...

...but hold your eyes opened upward for these washers!

Next, isolate the ii motor leads--the ii wires leading upward to the motor--and describe them gently to the side. They may live plastered against the side of the machine, but don’t live shy almost pulling them off; if the machine needs re-wiring, hence these wires convey to go, no affair what.

Rewire the end body

After isolating the motor leads, re-connect the other, non-motor wiring. Then screw the thumbscrews dorsum inwards place.

Put it dorsum together, minus the motor leads

Next, screw the end trunk dorsum into the machine. Not tightly, only plenty to hold it inwards place.
We create this partly for safekeeping--there’s no risk you’re going to lose the thumbscrews, brass washers, etc. if they’re attached to the machine--and partly to hold it out of the way: The adjacent mensuration volition discover unopen to potentially messy grease, in addition to nosotros don’t desire that getting onto the within of the end body.