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Unread 08-22-2015, 06:31 PM   #1
Not Yet Wild
 
Join Date: Aug 2015
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Default Diode needed on solenoid?

Hi, new to forum and carts in general.

My son and I picked up an old EZGO last weekend in rough shape - missing batteries and wires, and a bit neglected. We cleaned it up, and I ordered parts and got a set of batteries.

The serial number came back as an 1996 EZ-GO TXT, which I thought would be DCS. I got the wiring diagram from this site (Thanks!) but couldn't jibe that with what I was looking at. Did some more research, and it is pre-DCS - luckily, this site has diagrams for that, too (Thanks again!)

So, we put the batteries and, and re-wired it up, and it actually works!

My question is, I see from the diagram that there should be a diode across the solenoid - I do not have one. I ordered what I think is the correct part:
Diode - 3.0 Amps
Item#:30353G1

Is the cart safe to run or charge while I wait for it to come in? What is the purpose of it?

Any other advice on raising a long-neglected cart from the dead?

Thanks
pf
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Unread 08-22-2015, 06:36 PM   #2
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Default Re: Diode needed on solenoid?

Safe to use, but do fix it. The diode "traps" the voltage spike created by the magnetic field collapse created when power is removed from the solenoid coil (can briefly exceed 1000v). It protects the gas pedal microswitch from that spike.
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Unread 08-22-2015, 07:32 PM   #3
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Default Re: Diode needed on solenoid?

does diode control pos and neg of solenoid ?
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Unread 08-22-2015, 07:39 PM   #4
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Default Re: Diode needed on solenoid?

Quote:
Originally Posted by crash test dummy View Post
does diode control pos and neg of solenoid ?
No, but the diode must be orientated correctly when installed. The banded end of the diode must go on the same terminal as the positive wire.
This positive wire is one half of the solenoid activation circuit. It takes 36v (+) and (-) at the 2 small terminals to create the magnet coil which draws the solenoid main contact into place.
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Unread 08-22-2015, 07:41 PM   #5
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Default Re: Diode needed on solenoid?

thanks
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Unread 08-22-2015, 07:42 PM   #6
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Default Re: Diode needed on solenoid?

Basically this which we send with every solenoid.
Attached Images
File Type: jpg 36v-solenoid--controller-diagram.jpg (174.2 KB, 0 views)
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Unread 08-23-2015, 09:03 PM   #7
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Default Re: Diode needed on solenoid?

Quote:
Originally Posted by cgtech View Post
Safe to use, but do fix it. The diode "traps" the voltage spike created by the magnetic field collapse created when power is removed from the solenoid coil (can briefly exceed 1000v). It protects the gas pedal microswitch from that spike.
Thank you very much! Diode is on order, will install ASAP
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