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chazwood
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« on: June 21, 2013, 03:16:14 PM » |
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Could there be anything, besides the 50dn alternator dropping a leg of the stator, that would account for a voltage drop of 4 volts (27 down to 23 with no big load) on my dash meter?
I'm hoping it's a relay or fuse or something that costs less than a new 50dn.
Hey, i can always dream.
We were coming back from a concert in MN, (going home to Al.) and about Chicago, my voltage dropped about three volts. We made it home without lights or air and it held steady at 23vlts (as long as you didn't hit the air cond.)
Is my 50dn toast?
or could something else cause this?
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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Dave5Cs
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« Reply #1 on: June 21, 2013, 03:41:34 PM » |
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Bad Voltage regulator or a bad gauge. I am just trying to help ya out on the cost thing.  Dave5Cs |
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chazwood
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« Reply #2 on: June 21, 2013, 03:47:06 PM » |
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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luvrbus
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« Reply #3 on: June 21, 2013, 03:50:09 PM » |
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Check the belts first
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Live each day like it was your last,one day it will be
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chazwood
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« Reply #4 on: June 22, 2013, 02:38:05 PM » |
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Started bus. Opened back panel. Tested post 49 .....24 volts. Tested post 48....23.7 volts Tested post 33.....04 volts. I guess I have alternator problems  Does anyone have a lead on who rebuilds 50dn's in the southeast? |
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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Lin
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« Reply #5 on: June 22, 2013, 03:34:11 PM » |
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I believe that our local auto electric shop does, so I would hope that one there would also. Have you called any yet?
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You don't have to believe everything you think.
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Lee Bradley
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« Reply #6 on: June 22, 2013, 03:43:41 PM » |
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Bad diode? Might be able to fix that in place.
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bevans6
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« Reply #7 on: June 23, 2013, 02:52:55 PM » |
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That pin 33 voltage makes me think it's a bad diode. If I have it right that voltage should be around 12 - 14. That is the infamous R terminal...  Brian |
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1980 MCI MC-5C converted
Vintage race cars -
1978 Lola T440 Formula Ford
1972 NTM MK-4 B/SR
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chazwood
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« Reply #8 on: June 24, 2013, 09:24:12 AM » |
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I believe that our local auto electric shop does, so I would hope that one there would also. Have you called any yet?
Got a quote from a local who said $1200 I think he just assumes he will replace everything. Bad diode? Might be able to fix that in place.
Don't know about finding parts for this generator. That pin 33 voltage makes me think it's a bad diode. If I have it right that voltage should be around 12 - 14. Yes, it should be around 12-14 Where can I get diodes for this thing? That is the infamous R terminal... Brian |
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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chazwood
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« Reply #9 on: June 24, 2013, 09:25:37 AM » |
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Wow don't let me anywhere near the quote button. Hope you can make sense of my answers to those posts
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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chazwood
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« Reply #10 on: June 24, 2013, 09:45:21 AM » |
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Bottom line is...where do you get parts for these things?
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1992 MCI 102c3
Cummins l10 / Allison auto
Thekempters.com
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bevans6
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« Reply #11 on: June 24, 2013, 10:37:24 AM » |
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1980 MCI MC-5C converted
Vintage race cars -
1978 Lola T440 Formula Ford
1972 NTM MK-4 B/SR
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luvrbus
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« Reply #12 on: June 24, 2013, 10:46:29 AM » |
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Check the diodes you need a 300ohms meter reverse the leads if below 300ohms they are bad
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Live each day like it was your last,one day it will be
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