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10-30-2015, 02:30 PM
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#1
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Junior Member
Monaco Owners Club
Join Date: Feb 2010
Posts: 28
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Alternator Help Please
I have according to my build list, a Leece Neville alternator model 8RG-2113 and serial # 105-356. According to my repair facility the output is fluctuating between 8 and 17 volts. My tach bounces all over from 0 to 4000 RPM. Does anyone know of a source for this alternator and can anyone tell me the amperage of this unit. I understand that it is not easy to replace this with a Delco alternator. Please Help before this leaves me stranded!
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John Dolyn
2006 Monaco Cayman
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10-30-2015, 02:42 PM
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#2
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by JohnDolyn
I have according to my build list, a Leece Neville alternator model 8RG-2113 and serial # 105-356. According to my repair facility the output is fluctuating between 8 and 17 volts. My tach bounces all over from 0 to 4000 RPM. Does anyone know of a source for this alternator and can anyone tell me the amperage of this unit. I understand that it is not easy to replace this with a Delco alternator. Please Help before this leaves me stranded!
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First, your alternator is a 180 Amp.
These are not that hard to find. Any good Auto Electric store will likely have one on the shelf. Yours likely has Remote Sensing to the exciter. The standard Truck model does not but it is easily converted by the Auto Electric dealer. $350-400 for a New OEM assembly. In my opinion, don't mess with rebuilding. For a few bucks more you have an alternator that will give you another ten plus years.
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2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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10-30-2015, 02:49 PM
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#3
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Senior Member
Join Date: Mar 2011
Location: Ottawa Ontario Canada
Posts: 1,260
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If you have a system where your coach engine charges the house batteries and your inverter/converter charges house and engine batteries (such as a BIRD system) then you should be able to run your generator to keep batteries charged if alternator fails...
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DanielB
Looking for small Class C, sold Newmar MADP
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10-30-2015, 04:18 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Posts: 419
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Have it rebuilt.
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~Wade
thesugarchateau.com
1997 40' Monaco Signature Series Cummins 325HP & MD3060
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10-30-2015, 04:23 PM
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#5
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Senior Member
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
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Quote:
Originally Posted by castrol
Have it rebuilt.
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X2. Cheapest and most trouble free. Ask the rebuilder to use OEM parts.
Steve Ownby
Full time since '07
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Steve Ownby
Full time since 2007
2003 Monaco Signature
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10-30-2015, 05:51 PM
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#6
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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People have a lot of problems when they try and replace the original alternator. It is far less of a headache to have the original one rebuilt. Any big truck repair garage should be able to point you to a good alternator rebuild shop.
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Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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10-30-2015, 06:04 PM
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#7
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by Mike Canter
People have a lot of problems when they try and replace the original alternator. It is far less of a headache to have the original one rebuilt. Any big truck repair garage should be able to point you to a good alternator rebuild shop.
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Call the shop, give him the PN, drive over and pick it up. Drive home and install it. On the shelf, OEM replacement. Problems?
The first one gave me ten plus years, owes me nothing. I only like to do things once. In my opinion, rebuilding the old one is just not worth it. But, just my opinion.
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2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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10-30-2015, 06:36 PM
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#8
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Senior Member
Join Date: May 2014
Posts: 868
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It probably needs new brushes.
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10-30-2015, 06:37 PM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,498
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My alternator failed ~20 months ago, took it off, took it to a rebuild shop and they turned it in less then 24 hours. Cost was $185.
If by chance your alternator cannot be rebuild I would suggest contacting Prestolite, I did just in case mine wasn't rebuildable and they provided me with a current part # and vender
Kevin Taylor ktaylor@prestolite.com
Technical Services / Applications Engineering Leece-Neville Heavy Duty Products 9108 West Main st. Rushford, NY 14777 Office: 585-437-5210 Cell: 716-474-9407 Technical Call Center: 866-288-9853
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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10-30-2015, 07:02 PM
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#10
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Senior Member
Monaco Owners Club
Join Date: Sep 2013
Location: Nebraska
Posts: 799
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One thing that I learned on this forum is to start out each trip with fully charged batteries if at all possible. These alternators are asked a monumental task of charging several needy batteries at once and that makes them work harder and hotter which is what shortens their life span. I had never considered that until reading it here, but it does make sense. If I am boondocking I make it a point to run the generator well before my departure to get some juice back in the batteries so that the alternator doesn't have to work so hard when I head out. Just my two cents worth on the matter.. Randy
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Randy & Kathy-n-Auggie
07 HR Navigator 43PBQ, 525hp Cummins ISX, 17 Ford Supercrew Ecoboost King Ranch 4x4
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10-30-2015, 07:33 PM
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#11
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Senior Member
Join Date: Apr 2008
Location: Freeport, ME
Posts: 4,707
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Randy you are 100% correct. The engine alternator is not designed to charge dead chassis and house batteries and one should use the generator for that purpose.
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Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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10-30-2015, 09:10 PM
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#12
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Senior Member
Monaco Owners Club
Join Date: Dec 2013
Location: N. California
Posts: 861
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John,
If you are interested, check with your local Freightliner shop. I bought one for my rig from them two years ago for way cheaper than I expected.
Roy
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Roy and Debbie
07 Diplomat 38 PDQ
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10-31-2015, 05:08 AM
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#13
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Senior Member
Join Date: Mar 2011
Location: Ottawa Ontario Canada
Posts: 1,260
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Quote:
Originally Posted by Randyman1
One thing that I learned on this forum is to start out each trip with fully charged batteries if at all possible. These alternators are asked a monumental task of charging several needy batteries at once and that makes them work harder and hotter which is what shortens their life span. I had never considered that until reading it here, but it does make sense. If I am boondocking I make it a point to run the generator well before my departure to get some juice back in the batteries so that the alternator doesn't have to work so hard when I head out. Just my two cents worth on the matter.. Randy
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Quote:
Originally Posted by Mike Canter
Randy you are 100% correct. The engine alternator is not designed to charge dead chassis and house batteries and one should use the generator for that purpose.
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After the replacement of my alternator I started watching the state of my house batteries before starting my engine as I also figured I might overwork the alternator... I believe my alternator is a 180 Amp, just wonder if there is anything in the alternator to prevent drawing more than the max?? If not, I would wonder if I should not prevent my BIRD system from charging house batts with engine alternator...
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DanielB
Looking for small Class C, sold Newmar MADP
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10-31-2015, 08:42 PM
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#14
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Senior Member
Monaco Owners Club
Join Date: Apr 2011
Location: Central Illinois
Posts: 175
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John,
I just had the identical symptoms as you have and in addition the ABS and the Check Trans lights lit up on my dash. The volt meter on the dash read about 17 volts. I removed my alternator and took it to the shop I've been going to for over 30 years. They told me the alternator was fine and did not need rebuilding. They said to check ground connections, battery isolators, etc. To make a long story short the cuplrit was the Trombetta relay that connects the chassis batteries to the house batteries so that the house batteries get charged by the alternator while you are going down the road. My Trombetta hangs on the wall of the battery bay and was easy to remove. It was held together by rivets which I drilled out. The contacts inside were coated with a hard, thick coating of green gunk which was preventing the connection from being made. I cleaned the contacts, reassembled and reinstalled the Trombetta and the alternator output voltage is now a steady 14.1 volts as it should be. You can fix yours for free like I did or buy a new one with silver contacts which will not corrode like the copper ones did for less than $50 here: Silver Trombetta
Please make sure you disconnect your batteries and your shore power before beginning to remove the cables from the Trombetta.
If I can answer any questions, just let me know.
P.S Mine has a 160 amp Leece Nevill alternator
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Steve & Niki
2009 Monaco Cayman 35 SBD Cummins ISB 340HP
2011 Chevy HHR Toad
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