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Tips/Techniques Switch problems

Tips/Techniques

Shoprat

Well-Known Member
Ok guys. ,,,, need some electrical switch help.. on my new to me, Chin Hung lathe I found that the 2speed selector switch had broken inside 5hat panel, only allowing a low speed selection. The switch pic is attached. Any ideas.
 

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Susquatch

Ultra Member
Administrator
Moderator
Premium Member
What input are you looking for?

I agree. It looks broken to me too.

Looks like it has been hit or otherwise physically damaged. It does not look like it got damaged by an electrical problem.

Which is a good thing. You can just replace it and hope everything works the way it should.
 

whydontu

I Tried, It Broke
Premium Member
pretty standard switch, and yours is toast.

Wiring diagram of the switch:


Any chance there’s a wiring diagram on the lathe?

PA stocks generic modular switches that can be configured to duplicate the existing switch.
 

Shoprat

Well-Known Member
pretty standard switch, and yours is toast.

Wiring diagram of the switch:


Any chance there’s a wiring diagram on the lathe?

PA stocks generic modular switches that can be configured to duplicate the existing switch.
No not that I could find. This present switch has a zillion parts. Have you ever ordered from yoycart?
 

whydontu

I Tried, It Broke
Premium Member
I just grabbed the yoycart info as the first one I could find that had a switch diagram. Questions:

Does your lathe have a control box with fuses/breakers and relays?

How many wires going to the existing switch?

Might be able to work out the Princess Auto part numbers to make up a replacement switch.
 

Shoprat

Well-Known Member
I just grabbed the yoycart info as the first one I could find that had a switch diagram. Questions:

Does your lathe have a control box with fuses/breakers and relays?

How many wires going to the existing switch?

Might be able to work out the Princess Auto part numbers to make up a replacement switch.
I will be back in the shop a little later, going to grab you a bunch of shots.
 

Shoprat

Well-Known Member
Finally got some good info for you. Really appreciate the help.
 

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whydontu

I Tried, It Broke
Premium Member
Through a gross misunderstanding of how a valve worked, I once set fire to a Terex Titan earthmover. $100k up in smoke.

Did you know that mid-70s Freightliners made in BC were positive ground? And a 10 amp fuse on a 5 amp short to ground will never blow? But 5 amps at 24 volt is enough to start a fire? I learned this.

Much of human ingenuity gets wasted on discovering new ways to destroy things.
 
Last edited:
Through a gross misunderstanding of how a valve worked, I once set fire to a Terex Titan earthmover. $100k up in smoke.

Did you know that mid-70s Freightliners made in BC were positive ground? And a 10 amp fuse on a 5 amp short to ground will never blow? But 5 amps at 24 volt is enough to start a fire? I learned this.

Much of human ingenuity gets wasted on discovering new ways to destroy things.
This falls under "Do as I say, don't do as I do....."
 
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