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Tool Talk Discussion Forum

Reversing electric motor

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Farmall HMA

01-10-2008 08:24:32




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Have an Ajax 3/4 motor, capasitor start. Can't read the wiring diagram. Leads are marked:Blk,red,yellow,brown, B&W,and Blue. I khave tried several combinations, but nothing works. It runs CCW and needs to be CW (viewed from rear).
Usually it is T5 and T8 that are switched, but these are marked only by color




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Red Dave

01-10-2008 10:01:17




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 Re: Reversing electric motor in reply to Farmall HMA, 01-10-2008 08:24:32  
I reversed one last year. I googled the make and model of the motor and found a connection diagram on the net. Used the information from the dataplate in the search engine.

It gave the connections for both voltage change and direction changes.

Worked slicker'n a wet noodle.



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Bob

01-10-2008 08:46:02




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 Re: Reversing electric motor in reply to Farmall HMA, 01-10-2008 08:24:32  
Try swapping the BLACK and the BLUE wire.

Those colors are TYPICAL for the start winding leads.



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buickanddeere

01-10-2008 15:49:33




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 Re: Reversing electric motor in reply to Bob, 01-10-2008 08:46:02  
The leads to the start windings are often smaller than the run winding supply wires. The start windings will be connected to one end or the other of the start capacitor.



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