Coach Batts overcharging
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11-22-2010, 15:04
Post: #21
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Coach Batts overcharging
This is starting to sound like it could a ground problem.
Bob Griesel --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" > > Hi there Ralph, > The coach is fine at all times with shore or gen power. > Now when I start the motor the coach voltmeter in the dash nearly pegs to maximum = 20v or so > at the same time the coach ammeter nearly pegs to maximum= 300 amps or so. > both chassis amp and chassis voltmeter are still, no movement if very little. > Haven't regarded the inverters at all. > I have a new Delco voltage regulator and installed it with no results (same conditions ). > The solenoid I am focusing on is at the right rear firewall in the engine compartment next to the big round battery selector dial type switch. I think the wiring diagram is referring to this solenoid as auxillary charge solenoid. > I can not find an isolator. > Thanks for your questions. > Fred & Jeanne Hulse > Morristown,Arizona > 97 WLWB41 > |
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11-22-2010, 15:22
Post: #22
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Coach Batts overcharging
Ground problem would make sense,
but I am out of ground points to check!
I don't know where else to look for grounds but will enjoy any suggestions.
Thanks Bob
Fred
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11-22-2010, 18:04
Post: #23
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Coach Batts overcharging
Fred - this is where geography and a very different coach from mine limit the
ability to help. I can give some general ideas. One thought: Brand new components can be bad. Have you put a volt meter right on the alternator + terminal? What does it read? If it is 20+ volts, look for another regulator. Unless you measure 20+ volts right at the alternator, the new regulator is doing its job. In a 12V system, the charge voltage might be as high as 14.5, and the resting battery voltage can be as high as 12.8. You you must ask yourself where 20+ volts comes from. As I understand it, you have house and engine battery sets. Each battery set should be grounded to the chassis, as are the coach components. There is a total voltage potential of 25+ volts between the 2 battery banks. If a volt meter somehow measures the total voltage potential across both battery banks because a ground is missing somewhere along the line, you could see 20+ volts on the meter. This same fault could possibly make the regulator think maximum charge is needed, resulting in the high current reading. Try reading from the + terminal of one battery set to the + terminal of the other. Is the voltage above 12.8 resting or 14.5 with the alternator turning? If so, there is most likely a bad ground that has eluded you. It is even possible that the ground problem is internal to some component. That is the view from 10,000 feet. The devil is in the details of how your coach is wired. I think that a person with diagrams in front of them or someone with extensive experience with your coach's electrical system is needed to take this further. It is late and I could be totally wrong. I often am Bob Griesel --- In WanderlodgeForum@yahoogroups.com, "Fred Hulse" > > Ground problem would make sense, > but I am out of ground points to check! > I don't know where else to look for grounds but will enjoy any suggestions. > Thanks Bob > > Fred > |
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11-23-2010, 02:33
Post: #24
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Coach Batts overcharging
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11-23-2010, 02:41
Post: #25
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Coach Batts overcharging
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11-23-2010, 03:32
Post: #26
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Coach Batts overcharging

Ron
Thanks for your thoughts.
The chassis batteries have checked good,but with30 monthsof use,I have replaced themregardless.
Our summers only give us 3 years life in batteries anyway.
My next step is to isolate the 6 house bateries and check them.
Meanwhile looking for more grounds as Bob G. suggested.
Thanks Ron.
Fred & Jeanne Hulse
Morristown,Arizona 97 WLWB41 |
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11-23-2010, 18:02
Post: #27
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Coach Batts overcharging
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11-24-2010, 06:48
Post: #28
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Coach Batts overcharging
Hi Fred:
How do things stand on the charging problem? Safe travels, Ralph and Charolette Fullenwider "84FC35 "Ruff Diamond" Duncan, Oklahoma |
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11-24-2010, 16:44
Post: #29
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Coach Batts overcharging
Hi Ralph
I am tied up right now and will report tomorrow.
Thank you for asking...................
Fred & Jeanne Hulse
Morristown,Arizona 97 WLWB41 |
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11-25-2010, 01:09
Post: #30
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Coach Batts overcharging
Hi Folks,
We have resolved our problem with coach overcharging the batteries.
The "auxillarybattery solenoid" was the fault of the issue.This solenoid is located adjacent to the battery selector switch on the "firewall curb side" just above the battery bank.
The part I replaced was notidentical in appearance to the original,but had the same purpose.A rather easy change for anyone to get done.
We used a universalcontinuous duty marine insulated base solenoid available at any parts store.The part number on the one I used was a Cole Hersee 24117 costing about $40.00. Also a number 24059 is the same solenoid without the plastic coating and much less money but stillthe same quality.
In order to use these solenoids,the small wire terminals need to be replaced to fit the larger diameter studs,
(10-32 instead of 8-32)
I am happy to get this issue done and will be able to get over to Southern California late next week.
Thank you all for the help and ideas you shared in order for me to eliminate many circumstances.
Fred & Jeanne Hulse
Morristown,Arizona 97 WLWB41 |
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