Re: Sudden Loss of All Electrical Power
[Re: AndyF]
#2741079
02/08/20 09:36 PM
02/08/20 09:36 PM
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Joined: Jan 2003
Posts: 15,829 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,829
Omaha Ne
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Check the connections on the ammeter. Next get a test light or preferably a voltmeter and start chasing it. Don't overlook the ground cables/connections EDIT: I just remembered, years ago I fried an alternator at the track, If by chance your's shorted internally it would take out the fusible link
Last edited by TJP; 02/08/20 09:39 PM.
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Re: Sudden Loss of All Electrical Power
[Re: Mattax]
#2741437
02/09/20 11:34 PM
02/09/20 11:34 PM
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Joined: Feb 2010
Posts: 1,645 Phila. Pa.
Mattax
top fuel
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top fuel
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
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Assuming you have the original roundback, or a replacement roundback, be really careful if you open it up. Keep the stator windings with the back half. That way the soldered connectors won't get stressed. If the output stud is loose, you will have to open it up to tighten stud. Otherwise it will just spin, Parts are pretty readily available. Not as easy is finding people who will press out and resolder diodes, but not impossible. I think you can install a new cap and output stud without breaking the soldered connections between the stator and the diodes. I haven't done it, so can't tell you positively yes or no. Brushes and brush insulators are easy whichever type of alternator you have,
Examples of insulators for output studs. Red on roundback alternator (left) and beige on squareback (right). Inside a roundback, the output stud comes off of the capacitor. That cap is the cylinder in the 12 o'clock position. On a squareback, there is a second nut on the inside attaching the output stud to the rectifier bridge. About 4 o'clock position in this photo. Capicitor is attached on the other end. (Brushes should be removed before seperated halves. Minor oops!)
Last edited by Mattax; 02/09/20 11:50 PM.
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