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Old 09-01-2013, 04:35 PM   #11
simple man
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Default Re: EZGO '99 shudders, replaced batteries, solenoid and resistor

Make sure you hold the bottom nut ( the one closest to the motor ) when you remove those cables! If the stud turns, you will have damaged the motor!
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Old 09-02-2013, 05:59 AM   #12
JohnnieB
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Default Re: EZGO '99 shudders, replaced batteries, solenoid and resistor

Quote:
Originally Posted by JessiJD View Post
Again, Thanks for all the advice. I pulled all the wires out to clean and test continuity, but before I even got that far, the S1 and S2 wires to the motor were rubbed to the copper and the copper was touching the metal frame. I am hoping that this could be the problem? Thinking about going ahead and replacing the A1 and A2 cables because of small cracks.

I'll report back once I have replaced them, but could someone explain what the S1 and S2 wires do?
Thanks!
J
The S1 and S2 wires are the Stator wires and feed the stator (aka Field) windings.
In a Sepex (SEParately EXcited) motor, like those used in DCS and PDS carts, the current flow through the Field windings is about 1/10 of the current flowing through the armature, so the cables don't have to be as large as the A1 & A2 cables.

The S1 & S2 (aka F1 & F2) cable shorting out on the frame will cause the motor to have all sorts of conniptions and was probably the source of the shuddering.

---------
To change from Forward to Reverse, the controller switches the direction of current flow though the Field windings.
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