| Alternator failures [message #213699] |
Mon, 08 July 2013 11:52  |
Robert C
Messages: 28
Registered: October 2012
Location: Howell MI
Karma: 0
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Junior Member |
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Finally got my steering linkage all back in and went to start the unit to move it. The Alternator light dimmed then stayed on. The house batteries I know are shot and on my list to replace but one thing at a time. Still not done with the front end. The alternator was new a year ago. And the unit was driven back from TX last year. Any ideas on what to check before I blow another new one. Also any size or brand suggestions. Thanks guys and gals.
1975 Eleganza
Doug's headers
DBL air bag rear
New Jasper Engine
Manny Trans. one ton front end
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| Re: Alternator failures [message #213724 is a reply to message #213699] |
Mon, 08 July 2013 16:12  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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A meter is your friend here to see what the voltages are at different points. The only thing I can think of failing from sitting is a stuck brush. A battery with shôrted cells (as Matt steered you) can place a lower than normal impedance in the circuit. One shorted cell and you have a 10v battery and you are trying to jam 14 volts into it. Heavy load on alt.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Alternator failures [message #213759 is a reply to message #213699] |
Mon, 08 July 2013 23:43 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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| Robert C wrote on Mon, 08 July 2013 10:52 |
Finally got my steering linkage all back in and went to start the unit to move it. The Alternator light dimmed then stayed on. The house batteries I know are shot and on my list to replace but one thing at a time. Still not done with the front end. The alternator was new a year ago. And the unit was driven back from TX last year. Any ideas on what to check before I blow another new one. Also any size or brand suggestions. Thanks guys and gals.
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These alternators were designed to recharge cranking batteries. In our coaches, they are asked to charge both the cranking battery as well as depleted coach batteries. This results in high temperatures and a duty cycle they were not designed to live up to. There are several solutions but many of us are OK with lifetime warranties from such places as Autozone.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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