Home » Public Forums » GMCnet » [GMCnet] alternator
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| Re: [GMCnet] alternator [message #161130 is a reply to message #160996] |
Tue, 21 February 2012 22:16   |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| Terry Skinner wrote on Mon, 20 February 2012 11:27 |
Want to know more about that alternator under the hatch?? Here you
go!! Also some stuff about how to bend a roll bar. Not much use unless
you are going to the salt flats.<G>
http://www.pirate4x4.com/tech/billavista/Wiring/Part2/
--
Terry Skinner
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I like the part where he explains how the GMC MH is solar powered.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] alternator [message #161255 is a reply to message #161248] |
Thu, 23 February 2012 17:36 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Greg and April wrote on Thu, 23 February 2012 17:25 |
Is a "hot field' a good thing or a bad thing?
Greg H.
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Good Question Greg,
As near as I can tell, the only difference it makes is how you test the alternator and regulator.
I always liked being able to put a meter on the battery and jam the screwdriver in the D hole and see if the meter moves up. It is a completely Un-nervous test.
On the other hand, the others- like Mopar (iirc), you had to use a jumper from the output post to one of the terminals. (Oh, if you hit the frame of the alternator, your test lead would instantly heat to incandescence.)
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Alternator [message #345243 is a reply to message #160996] |
Sat, 13 July 2019 17:29 |
Ek_Lektro
Messages: 167
Registered: March 2011
Karma: 2
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Senior Member |
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> I just heard from a second friend their new alternators lasted approx.
> 10 days each. They went thru 3 or 4 before finding one that is now
> running. Seems to be common with the alternators being made today…
Between 2 coaches, i’d gone through about 3 or 4 Duralast alternators in the past 3 years.
The lifetime warranty at Autozone had me stuck in a painful loop.
(And this estimate is NOT including 2 other Duralasts that'd probably failed because
a neighborhood mechanic hooked the leads up backwards, and it was putting out 16v….
until thanks to a Jim Bounds consultation call, i traced what was going on.
Yes, my coach doesn’t have the stock double connector anymore, so you gotta be careful)
So finally i decided to try an AC Delco from O’Reillys, branded as Ultima.
I’ve only put about 500 miles on it so far, and It hasn’t blown out on me yet,
however i’m pretty disappointed that its only putting out 13.2 volts!
The “GEN” light does not come on, and the belt is tight, so wondering what’s the issue here?
(BTW: This is on the Eleganza, not the Birchhaven which is having the ignition / battery / starter issue)
Also, last time i had the Eleganza out in the evening, with headlights on, and needed to raise airbags,
the alternator seemed to temporarily stop working. my analog voltage gauge dipped down to
12 volts, and i could hear the compressor motor struggling.
So now that the Birchhaven starter situation might be handled (more on that in a later post)
i’m gonna dig into the Eleganza alternator issue and see what i can see.
Wondering if one of my 10 year old Viair pumps is getting tired, and taxing the system.
(It makes a lower growling noise compared to the other one, but seems to raise just as fast)
Connections are tight. Grounds are good. Hmmmmm….
Anyway, yes, alternator quality (at Autozone at least) was pretty atrocious. Right out of the box, many of the blades are bent
and hitting against the housing. I’ll see what i can do about this AC Delco and report any new findings
Cheers!
Greg / SolarSonic / LosAngeles
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| Re: [GMCnet] Alternator [message #345247 is a reply to message #345243] |
Sat, 13 July 2019 18:44 |
Ek_Lektro
Messages: 167
Registered: March 2011
Karma: 2
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13.2v max is flat defective. replace it. you need 14.2v hot, 14.3-4
cold or you will slowly destroy your batteries by not fully charging.
On 2019-07-13 18:29, Ek Lektro via Gmclist wrote:
>> I just heard from a second friend their new alternators lasted approx.
>> 10 days each. They went thru 3 or 4 before finding one that is now
>> running. Seems to be common with the alternators being made today...
>
> Between 2 coaches, i'd gone through about 3 or 4 Duralast alternators in the past 3 years.
> The lifetime warranty at Autozone had me stuck in a painful loop.
> (And this estimate is NOT including 2 other Duralasts that'd probably failed because
> a neighborhood mechanic hooked the leads up backwards, and it was putting out 16v....
> until thanks to a Jim Bounds consultation call, i traced what was going on.
> Yes, my coach doesn't have the stock double connector anymore, so you gotta be careful)
>
> So finally i decided to try an AC Delco from O'Reillys, branded as Ultima.
> I've only put about 500 miles on it so far, and It hasn't blown out on me yet,
> however i'm pretty disappointed that its only putting out 13.2 volts!
> The "GEN" light does not come on, and the belt is tight, so wondering what's the issue here?
> (BTW: This is on the Eleganza, not the Birchhaven which is having the ignition / battery / starter issue)
>
> Also, last time i had the Eleganza out in the evening, with headlights on, and needed to raise airbags,
> the alternator seemed to temporarily stop working. my analog voltage gauge dipped down to
> 12 volts, and i could hear the compressor motor struggling.
>
> So now that the Birchhaven starter situation might be handled (more on that in a later post)
> i'm gonna dig into the Eleganza alternator issue and see what i can see.
> Wondering if one of my 10 year old Viair pumps is getting tired, and taxing the system.
> (It makes a lower growling noise compared to the other one, but seems to raise just as fast)
> Connections are tight. Grounds are good. Hmmmmm....
>
> Anyway, yes, alternator quality (at Autozone at least) was pretty atrocious. Right out of the box, many of the blades are bent
> and hitting against the housing. I'll see what i can do about this AC Delco and report any new findings
>
> Cheers!
> Greg / SolarSonic / LosAngeles
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] alternator [message #345249 is a reply to message #160996] |
Sat, 13 July 2019 19:32 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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I redid my own working 80A by replacing bearings and brushes. If the diodes and regulator are
good I leave them. I Deoxit D5 cleaned all internal connections. Then drove Chicago Seatle Chicago to "road test". No issues.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] alternator [message #345252 is a reply to message #345249] |
Sun, 14 July 2019 05:45 |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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John, how do you test the voltage regulator?
On Sat, Jul 13, 2019 at 7:02 PM John R. Lebetski via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I redid my own working 80A by replacing bearings and brushes. If the
> diodes and regulator are
> good I leave them. I Deoxit D5 cleaned all internal connections. Then
> drove Chicago Seatle Chicago to "road test". No issues.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
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--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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