Home » Public Forums » GMCnet » double alternator report
| double alternator report [message #246014] |
Tue, 01 April 2014 11:09  |
C Boyd
Messages: 2629
Registered: April 2006
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I did the double alt pulley today. No problem changing the pulley as my air wrench went in from the bottom and did not have to remove the alt. I adjusted the ps pump almost all the way out as to leave enough room to remove cap to check fluid level easily. My coach is a 76 and has the factory shroud. I found the sweet spot to slide the belts past the fan blade to be at 1:00. I used the 15570 belts and were snug and I have plenty of adjustment left. I tried a 15585 to start with and would not tighten enough. I ordered my belts from V-belt global supply. Kevlar belts made in India. 29/64 x 57 on the package.
C. Boyd
76 Crestmont
East Tennessee
[Updated on: Tue, 01 April 2014 17:43] Report message to a moderator |
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| Re: [GMCnet] double alternator report [message #246035 is a reply to message #246026] |
Tue, 01 April 2014 12:21  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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| Mr ERFisher wrote on Tue, 01 April 2014 11:50 |
Good luck if you have to drive w/o power steering when the alternator goes out...
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If one alt belt fails it will probably take out the other and it would probably take out the power steering belt anyway. Plus, there is no reason someone could not carry their 'old' power steering belt as a worst case failure spare.
I'll be doing this as soon as I get caught up with chores after the trip.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] double alternator report [message #246040 is a reply to message #246035] |
Tue, 01 April 2014 12:37 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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I'd guess that losing one belt would probably take all the others and you'd soon have engine overheating from lack of coolant circulation even though you could probably still steer with lots of effort.
You don't really have to ask me how I know that!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~~ k2gkk @ hotmail dot com ~~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> To: gmclist@temp.gmcnet.org
> From: Pinkertonk@MCHSI.com
> Date: Tue, 1 Apr 2014 12:21:14 -0500
> Subject: Re: [GMCnet] double alternator report
>
>
>
> Mr ERFisher wrote on Tue, 01 April 2014 11:50
> > Good luck if you have to drive w/o power steering when the alternator goes out...
>
>
> If one alt belt fails it will probably take out the other and it would probably take out the power steering belt anyway. Plus, there is no reason someone could not carry their 'old' power steering belt as a worst case failure spare.
>
> I'll be doing this as soon as I get caught up with chores after the trip.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
> _______________________________________________
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| Re: [GMCnet] double alternator report [message #246043 is a reply to message #246035] |
Tue, 01 April 2014 12:55 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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there is no right way
but
> If one alt belt fails it will probably take out the other and it would
> probably take out the power steering belt anyway.
it is the alt. that goes out, not the belt
> Plus, there is no reason someone could not carry their 'old' power
> steering belt as a worst case failure spare.
>
we usually just cut the alt. belt, and go on
jwid
erf
>
> I'll be doing this as soon as I get caught up with chores after the trip.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as
> an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
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--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] double alternator report [message #246062 is a reply to message #246035] |
Tue, 01 April 2014 14:47 |
mickeysss
Messages: 1476
Registered: January 2012
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someone stated they have an extra belt hanging from the alternator down there ready to be replaced behind the fan or something like that. This seems to be an interesting plan B. mickey anaheim ca, 77 palm beach
On Apr 1, 2014, at 10:21 AM, Kerry Pinkerton wrote:
>
>
> Mr ERFisher wrote on Tue, 01 April 2014 11:50
>> Good luck if you have to drive w/o power steering when the alternator goes out...
>
>
> If one alt belt fails it will probably take out the other and it would probably take out the power steering belt anyway. Plus, there is no reason someone could not carry their 'old' power steering belt as a worst case failure spare.
>
> I'll be doing this as soon as I get caught up with chores after the trip.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] double alternator report [message #246097 is a reply to message #246062] |
Tue, 01 April 2014 19:13 |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
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Is alternator belt failure really that big of a problem? In 40 years of driving I don't think I've ever had an alternator belt fail, or any other belt for that matter. I just give them a good looking over whenever I'm looking at the engine, and if they look worn I replace them.
I've driven cross country several times, in a 1970 GMC with a 396 and a camper, and later with a 1992 Chevy with a 454 and a camper. Belts have never been a concern. I just checked them before I left.
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: [GMCnet] double alternator report [message #246103 is a reply to message #246097] |
Tue, 01 April 2014 19:54 |
Steve
Messages: 506
Registered: September 2013
Location: East Greenville, Pa
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| Otterwan wrote on Tue, 01 April 2014 20:13 |
I've driven cross country several times, in a 1970 GMC with a 396 and a camper.
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Pretty close to my set up. My 1968 Chevy has the big block 396 and carries a large truck camper. I have had it as far west as Yellowstone National Park eight years ago, and to Acadia National Park in Maine this past summer.
My 1978 GMC Royale is my newer, more modern RV.
1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
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| Re: [GMCnet] double alternator report [message #246105 is a reply to message #246097] |
Tue, 01 April 2014 20:01 |
Mr ERFisher
Messages: 7117
Registered: August 2005
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On Tue, Apr 1, 2014 at 5:13 PM, David Orders <dao@oarsllc.com> wrote:
>
>
> Is alternator belt failure really that big of a problem? In 40 years of
> driving I don't think I've ever had an alternator belt fail, or any other
> belt for that matter. I just give them a good looking over whenever I'm
> looking at the engine, and if they look worn I replace them.
>
you are right,
if you keep them straight and tight, they will out last us
http://www.gmcmhphotos.com/photos/data/5950/GMC_BELTS_WILL_NOT_LET_YOU_DOWN.pdf
erf
>
> I've driven cross country several times, in a 1970 GMC with a 396 and a
> camper, and later with a 1992 Chevy with a 454 and a camper. Belts have
> never been a concern. I just checked them before I left.
> --
> 1976 Royale "Twinkie II", 1978 Palm Beach with front end fire. Lynnwood WA
> - "We may not be able to stop all evil in the world, but I know that how we
> treat one another is entirely up to us."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] double alternator report [message #246116 is a reply to message #246105] |
Tue, 01 April 2014 21:23 |
jim kanomata
Messages: 257
Registered: March 2007
Location: fremont,ca
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Like rubber tires, belts can have an age issue.
I try to replace belts every 5 years as I do cross the country frequently.
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] double alternator report [message #246201 is a reply to message #246043] |
Wed, 02 April 2014 17:05 |
rjw
Messages: 697
Registered: September 2005
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| Mr ERFisher wrote on Tue, 01 April 2014 13:55 |
there is no right way
but we usually just cut the alt. belt, and go on
jwid
erf
--
Gene Fisher -- 74-23,77PB/ore/ca
|
You say "we usually just cut the alt. belt, and go on" like it happens often. In 16 years I (knock on wood) have never lost a belt in my GMC. I did lose a serpentine belt in my my Ford Explorer during that time frame however.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: [GMCnet] double alternator report [message #246206 is a reply to message #246201] |
Wed, 02 April 2014 17:21 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Is not the belts
It is the alternators
I have replaced 4 of my own till I get them rebuilt locally
Erf
_______________
On Wednesday, April 2, 2014, RJW <mygmc@palmbeachgmc.com> wrote:
>
>
> Mr ERFisher wrote on Tue, 01 April 2014 13:55
> > there is no right way
> > but we usually just cut the alt. belt, and go on
> > jwid
> > erf
> >
> > --
> > Gene Fisher -- 74-23,77PB/ore/ca
>
>
> You say "we usually just cut the alt. belt, and go on" like it happens
> often. In 16 years I (knock on wood) have never lost a belt in my GMC. I
> did lose a serpentine belt in my my Ford Explorer during that time frame
> however.
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator,
> Manny Tranny, Control Arm Brake (Drum/Drum) Upgrade (to be installed)
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] double alternator report [message #246211 is a reply to message #246206] |
Wed, 02 April 2014 17:31 |
scott cowden
Messages: 170
Registered: February 2004
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I Agree with Gene;
I went through 3 alts in the first 3 yrs I owned my coach. The current one is 8 yrs old. It was built by a local shop known for good work and offering lifetime warranty.
I have so upgraded things by adding an 8 gauge wire from the alt to the main wire for the coach. I noted that the insulation on this wire showed some heat damage in the early days.
The last alt also showed heat damage to the isolator where the main power lug goes through the casing. Big draw there.
Scott
'74 x-glacier
Newmarket ON
Sent from my iPhone
> On Apr 2, 2014, at 6:21 PM, "gene Fisher" <mr.erfisher@gmail.com> wrote:
>
> Is not the belts
> It is the alternators
>
> I have replaced 4 of my own till I get them rebuilt locally
>
> Erf
> _______________
>
>
>> On Wednesday, April 2, 2014, RJW <mygmc@palmbeachgmc.com> wrote:
>>
>>
>>
>> Mr ERFisher wrote on Tue, 01 April 2014 13:55
>>> there is no right way
>>> but we usually just cut the alt. belt, and go on
>>> jwid
>>> erf
>>>
>>> --
>>> Gene Fisher -- 74-23,77PB/ore/ca
>>
>>
>> You say "we usually just cut the alt. belt, and go on" like it happens
>> often. In 16 years I (knock on wood) have never lost a belt in my GMC. I
>> did lose a serpentine belt in my my Ford Explorer during that time frame
>> however.
>> --
>> Richard
>> 76 Palm Beach
>> SE Michigan
>> www.PalmBeachGMC.com
>>
>>
>> Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Macerator,
>> Manny Tranny, Control Arm Brake (Drum/Drum) Upgrade (to be installed)
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> "Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] double alternator report [message #246226 is a reply to message #246221] |
Wed, 02 April 2014 20:22 |
scott cowden
Messages: 170
Registered: February 2004
Karma: 0
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Senior Member |
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DC;
you're right. insulator.
sorry, been a 14 hour day so far and i was typing quick.
scott
Sent from my iPad
> On Apr 2, 2014, at 8:28 PM, "D C _Mac_ Macdonald" <k2gkk@hotmail.com> wrote:
>
> Scott, are you talking about the "insulator" at the output of the alternator or the isolator on the forward side of the firewall where the alternator output goes to the center terminal of that isolator?
> Just trying to decipher exactly what you are saying (below).
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~~ k2gkk @ hotmail dot com ~~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~~ k2gkk + hotmail dot com ~~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
> ______________
> *[ ]~~~[][ ][|\
> *--OO--[]---O-*
>
>
>> From: scottyforsail@hotmail.com
>> Date: Wed, 2 Apr 2014 18:31:04 -0400
>> To: gmclist@temp.gmcnet.org
>> Subject: Re: [GMCnet] double alternator report
>>
>> I Agree with Gene;
>>
>> I went through 3 alts in the first 3 yrs I owned my coach. The current one is 8 yrs old. It was built by a local shop known for good work and offering lifetime warranty.
>> I have so upgraded things by adding an 8 gauge wire from the alt to the main wire for the coach. I noted that the insulation on this wire showed some heat damage in the early days.
>>
>> The last alt also showed heat damage to the isolator where the main power lug goes through the casing. Big draw there.
>>
>> Scott
>> '74 x-glacier
>> Newmarket ON
>>
>> Sent from my iPhone
>>
>>> On Apr 2, 2014, at 6:21 PM, "gene Fisher" <mr.erfisher@gmail.com> wrote:
>>>
>>> Is not the belts
>>> It is the alternators
>>>
>>> I have replaced 4 of my own till I get them rebuilt locally
>>>
>>> Erf
>>> _______________
>
> _______________________________________________
> GMCnet mailing list
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| Re: [GMCnet] double alternator report [message #246228 is a reply to message #246226] |
Wed, 02 April 2014 21:03 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Then I would suspect a loose connection of the power wire to the alternator or possibly a loose connection to that terminal internally. That would cause resistance and a subsequent voltage drop at the connection that would result in the overheating at the terminal and insulator.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~~ k2gkk @ hotmail dot com ~~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> From: scottyforsail@hotmail.com
> Date: Wed, 2 Apr 2014 21:22:44 -0400
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] double alternator report
>
> DC;
>
> you're right. insulator.
>
> sorry, been a 14 hour day so far and i was typing quick.
>
> scott
>
> Sent from my iPad
>
> > On Apr 2, 2014, at 8:28 PM, "D C _Mac_ Macdonald" <k2gkk@hotmail.com> wrote:
> >
> > Scott, are you talking about the "insulator" at the output of the alternator or the isolator on the forward side of the firewall where the alternator output goes to the center terminal of that isolator?
> > Just trying to decipher exactly what you are saying (below).
> >
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > ~~ ~ D C "Mac" Macdonald ~ ~~
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> >
> >
> >> From: scottyforsail@hotmail.com
> >> Date: Wed, 2 Apr 2014 18:31:04 -0400
> >> To: gmclist@temp.gmcnet.org
> >> Subject: Re: [GMCnet] double alternator report
> >>
> >> I Agree with Gene;
> >>
> >> I went through 3 alts in the first 3 yrs I owned my coach. The current one is 8 yrs old. It was built by a local shop known for good work and offering lifetime warranty.
> >> I have so upgraded things by adding an 8 gauge wire from the alt to the main wire for the coach. I noted that the insulation on this wire showed some heat damage in the early days.
> >>
> >> The last alt also showed heat damage to the isolator where the main power lug goes through the casing. Big draw there.
> >>
> >> Scott
> >> '74 x-glacier
> >> Newmarket ON
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| Re: [GMCnet] double alternator report [message #246230 is a reply to message #246228] |
Wed, 02 April 2014 21:20 |
scott cowden
Messages: 170
Registered: February 2004
Karma: 0
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Senior Member |
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That would make sense and as an inspector I'd tend to say that myself.
When I checked this, it was indeed loose, but recalled it being installed fairly tightly when the larger gauge wire was originally installed.
the heat damage was enough to actually crack the insulator.
I couldn't be sure if the wire nut came a bit loose and the resulting poor connection caused overheating, or if high draw on the alternator charging two large RV batteries in a low state of charge caused the insulator to take on too much heat and shrink from heat damage, loosening the nut and exacerbating the problem.
The alternator isn't an area of high vibration where hardware would be expected to loosen [not like an old Harley, for example].
I do openly admit that human-caused failure of the part is a highly probable explanation.
But since this last alternator was installed and I converted to implement drive belts from automotive belts, I've had very little trouble overall. I really do notice how hard the alternator is working to charge the batteries after a few days of dry camping if I've not used the generator to charge things up.
Scott
'74 x-Glacier
2009 Road Glide
1995 Caprice Wagon w/LT-1 "Barney"
Newmarket ON
> From: k2gkk@hotmail.com
> To: gmclist@temp.gmcnet.org
> Date: Wed, 2 Apr 2014 21:03:29 -0500
> Subject: Re: [GMCnet] double alternator report
>
> Then I would suspect a loose connection of the power wire to the alternator or possibly a loose connection to that terminal internally. That would cause resistance and a subsequent voltage drop at the connection that would result in the overheating at the terminal and insulator.
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~~ k2gkk @ hotmail dot com ~~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~~ k2gkk + hotmail dot com ~~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
> ______________
> *[ ]~~~[][ ][|\
> *--OO--[]---O-*
>
>
> > From: scottyforsail@hotmail.com
> > Date: Wed, 2 Apr 2014 21:22:44 -0400
> > To: gmclist@temp.gmcnet.org
> > Subject: Re: [GMCnet] double alternator report
> >
> > DC;
> >
> > you're right. insulator.
> >
> > sorry, been a 14 hour day so far and i was typing quick.
> >
> > scott
> >
> > Sent from my iPad
> >
> > > On Apr 2, 2014, at 8:28 PM, "D C _Mac_ Macdonald" <k2gkk@hotmail.com> wrote:
> > >
> > > Scott, are you talking about the "insulator" at the output of the alternator or the isolator on the forward side of the firewall where the alternator output goes to the center terminal of that isolator?
> > > Just trying to decipher exactly what you are saying (below).
> > >
> > > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > > ~~ ~ D C "Mac" Macdonald ~ ~~
> > > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > >
> > >
> > >> From: scottyforsail@hotmail.com
> > >> Date: Wed, 2 Apr 2014 18:31:04 -0400
> > >> To: gmclist@temp.gmcnet.org
> > >> Subject: Re: [GMCnet] double alternator report
> > >>
> > >> I Agree with Gene;
> > >>
> > >> I went through 3 alts in the first 3 yrs I owned my coach. The current one is 8 yrs old. It was built by a local shop known for good work and offering lifetime warranty.
> > >> I have so upgraded things by adding an 8 gauge wire from the alt to the main wire for the coach. I noted that the insulation on this wire showed some heat damage in the early days.
> > >>
> > >> The last alt also showed heat damage to the isolator where the main power lug goes through the casing. Big draw there.
> > >>
> > >> Scott
> > >> '74 x-glacier
> > >> Newmarket ON
>
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| Re: [GMCnet] double alternator report [message #246231 is a reply to message #246230] |
Wed, 02 April 2014 21:31 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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As several others have stated, Scott, it's probably best to have an alternator rebuilt locally by a competent service technician than purchasing so-called rebuilt items. The "mass" rebuilders may just renew diodes or some other parts and miss a bad stator or rotor and just send them out the door.
A cracked output insulator might have been missed.
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~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
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> From: scottyforsail@hotmail.com
> To: gmclist@temp.gmcnet.org
> Date: Thu, 3 Apr 2014 02:20:26 +0000
> Subject: Re: [GMCnet] double alternator report
>
> That would make sense and as an inspector I'd tend to say that myself.
>
> When I checked this, it was indeed loose, but recalled it being installed fairly tightly when the larger gauge wire was originally installed.
>
> the heat damage was enough to actually crack the insulator.
>
> I couldn't be sure if the wire nut came a bit loose and the resulting poor connection caused overheating, or if high draw on the alternator charging two large RV batteries in a low state of charge caused the insulator to take on too much heat and shrink from heat damage, loosening the nut and exacerbating the problem.
>
> The alternator isn't an area of high vibration where hardware would be expected to loosen [not like an old Harley, for example].
>
> I do openly admit that human-caused failure of the part is a highly probable explanation.
>
> But since this last alternator was installed and I converted to implement drive belts from automotive belts, I've had very little trouble overall. I really do notice how hard the alternator is working to charge the batteries after a few days of dry camping if I've not used the generator to charge things up.
>
> Scott
> '74 x-Glacier
> 2009 Road Glide
> 1995 Caprice Wagon w/LT-1 "Barney"
> Newmarket ON
>
> > From: k2gkk@hotmail.com
> > To: gmclist@temp.gmcnet.org
> > Date: Wed, 2 Apr 2014 21:03:29 -0500
> > Subject: Re: [GMCnet] double alternator report
> >
> > Then I would suspect a loose connection of the power wire to the alternator or possibly a loose connection to that terminal internally. That would cause resistance and a subsequent voltage drop at the connection that would result in the overheating at the terminal and insulator.
> >
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > ~~ ~ D C "Mac" Macdonald ~ ~~
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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