Tyre changer motor help

Shaunyh · May 13, 2017

Hi guys new here and could do with picking a few brains if pos i have a tyre machine single phase with 0.75kw motor in it the lad who i got it of said it he fitted a new motor and was told it was the corret one witch in his defence says on the tyre machine plate 0.75kw but when you start to take the tyre off you have to help it round abit just to get it going the belt is not slipping as i tuck the motor off and tryed it off and a bit ov wood on it if been told the capacitors are ok so what elce can i do as the next motor up has a different base ill attach a pic of the capacitors could these be up rated any info would be grand

[ElectriciansForums.net] Tyre changer motor help

westward10 · May 13, 2017

The capacitors seem the correct mfd for start and run purposes how have they been tested.

Shaunyh · May 13, 2017

westward10 said:
The capacitors seem the correct mfd for start and run purposes how have they been tested.

A shop that does motors tested them with a multimeter i dont no how would it be worth replacing them any way as what iv seen they only a few quid to buy

westward10 · May 13, 2017

There isn't something binding up in the machine preventing the motor running. Why was a new motor fitted.

Shaunyh · May 13, 2017

westward10 said:
There isn't something binding up in the machine preventing the motor running. Why was a new motor fitted.

Old motor failed and no every thing is free the motor is slow starting whilst on a bench with little force on it

westward10 · May 13, 2017

Sounds like the start capacitor, the 75 mfd one. This is the most common cause of split phase motor failure.

Specialist · May 13, 2017

The run cap looks pretty new, when you buy a new start capacitor make sure it has the same voltage rating as the original in this case 300v ac or higher.

Shaunyh · May 13, 2017

Thank you very much for your help any good places that i will get one from

Andy-1960 · May 13, 2017

Centrifugal switch may be worth checking

Shaunyh · May 13, 2017

Andy-1960 said:
Centrifugal switch may be worth checking

Whats that lol

westward10 · May 13, 2017

Andy-1960 said:
Centrifugal switch may be worth checking

Yeah I thought this but when he said new motor I dismissed it but maybe not so new. The cf switch disconnects the start winding when hits a certain speed then it just runs on the main winding. It is possible it is stuck open.

Shaunyh · May 13, 2017

Thanks guys i think iv got it amate whos a sparky just charged both the capacitors with his meater the white one shorted out but the black starter one wouldnt charge up to short out so must be that he said lol

westward10 · May 13, 2017

Delete.

Shaunyh · May 14, 2017

Andy-1960 said:
Centrifugal switch may be worth checking

Checked the cf switch to day and one of the wires had broke of the solder aswell thanks alot guys

Shaunyh · May 14, 2017

Surely if the start capacitor and the wire had separated for the solder the turn table wouldnt start up what so ever in my case it was old when it had a bit resistance ie a tyre it wouldnt turn it started up with out anything on it was a bit starting for few seconds but it still started i hope it is the capacitor but im not convinced to be honest

Tyre changer motor help

Shaunyh

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westward10

Shaunyh

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westward10

Shaunyh

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westward10

Specialist

Shaunyh

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Andy-1960

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Shaunyh

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westward10

Shaunyh

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westward10

Shaunyh

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Shaunyh

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