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Discussion Topic:
Charging Problems:
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sarahcecelia |
09-25-2022 @ 9:53 AM
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Senior
Posts: 1182
Joined: Mar 2013
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Ragtopman or Tom- Years ago this is how I to tested a generator I had rebuilt. I learned to put it on the floor ; put my foot on it to hold; connect a battery cable to arm terminal , and then just touch it to the case; if it motored it was good. Being that I'm 85 + now; Please confirm if my memory is right about that?
Regards, Steve Lee
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fortyford |
06-29-2022 @ 7:11 AM
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Member
Posts: 215
Joined: Nov 2009
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Ok,I got brave enough to change out the battery gauge with a NOS gauge.Would have been fairly easy but dang heater switch is in the way and I did not want to remove!I did test the new gauge before I went to all the trouble to change.At 60 mph the needle is in the middle of the green area.I am a happy camper now!I noticed these gauges have adjustments?Maybe I can fine tune the one I took out for a spare?Thanks Tom for all your help.
This message was edited by fortyford on 6-29-22 @ 7:29 AM
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TomO |
06-13-2022 @ 6:44 AM
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Senior
Posts: 7250
Joined: Oct 2009
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Please read paragraph 2 of my previous reply.
Tom
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fortyford |
06-12-2022 @ 2:26 PM
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Member
Posts: 215
Joined: Nov 2009
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Thanks Tom,I have a NOS battery gauge and may change it out to see where it reads or can I possibly check it before I install it to see what it reads?
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TomO |
06-12-2022 @ 9:32 AM
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Senior
Posts: 7250
Joined: Oct 2009
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There is no need to perform the ARM to FLD test now, your generator is charging. That test is only valid when your generator is not charging and you need to know if the problem is the generator or regulator. The voltage at the dash unit may be lower than the voltage seen at the battery due to resistance in the gauge circuit or the gauge may be reading low. The gauge should have about 6.8V at the orange/ green line. You can check the accuracy of your gauge by connecting a meter to the input of the meter and driving 50mph. The regulator MUST be set with accurate instruments and correct conditions. The way to check the regulator output is connect your meter to the BAT terminal of the regulator and increase the rpm of the engine while watching the meter. When the meter stops showing an increase in voltage, that is what your regulator is set to. If it is less than 7.2V, disconnect the battery, remove the regulator, take it to the shop that tested your generator and have him adjust the regulator. Re-install the regulator, connect the battery and you sho8uld be good to go.
Tom
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fortyford |
06-11-2022 @ 10:59 AM
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Member
Posts: 215
Joined: Nov 2009
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I took my original generator to this shop near me and they checked it while I waited.It was doing nothing so I left it.two days later he called me and said he took it apart and only thing he found was it seemed like one of the brushes was stuck,so it is charging now.Installed it with new regulator and at high idle I am getting about 7.0 at battery.At about 50mph on the road my battery gauge reads right at the orange and green line?May be I am to picky but I still think I am losing voltage some where?Tom I will try your suggestion and get back with an update.
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TomO |
06-11-2022 @ 8:13 AM
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Senior
Posts: 7250
Joined: Oct 2009
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What voltage did you get when you used a jumper to connect the ARM terminal of the voltage regulator to the FLD terminal and raised the rpm to at least 1,220 rpm (about 25mph)?
Tom
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37RAGTOPMAN |
06-09-2022 @ 10:22 AM
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Senior
Posts: 1958
Joined: Oct 2009
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CHARGING PROBLEMS I was wondering if you have a battery disconnect switch on one of battery terminals ? I had one on my 37 and found out that it would charge more with out the switch, and the starter would turn over the engine faster, I now disconnect the battery with a 1/2 inch wrench more work LESS PROBLEMS just food for thought, hope this helps 37 Ragtopman, Maine
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fortyford |
05-31-2022 @ 3:26 PM
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Member
Posts: 215
Joined: Nov 2009
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Yes, I always polarize the regulator.OK I took the generator that had been on my car for years and he checked it as I waited and it had nothing!!I have a NOS military surplus generator that came from DC on my car now and believe it or not it is dead or weak also!At high idle I still am not seeing at least 7.0 everywhere I check.I am going to take it off and take to same man for him to check it also?Got a brand new regulator coming from NAPA tomorrow.
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37RAGTOPMAN |
05-31-2022 @ 6:59 AM
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Senior
Posts: 1958
Joined: Oct 2009
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did you polarize the regulator ? to test the charging system. you could disconnect the regulator, use a meter , one lead to the ARM terminal and one to ground, now with engine running ground the field terminal for a split second and see if it charges higher, if it does you have a regulator problem, or other issues, never go by the dash gauge, buy a good meter, for testing if it does not you have a generator problem how are the brushes in the gen, are they arcing, ? short, dirty , comuntator corroded, hope this helps, lease supply more information,, which helps us to diagnose hope this helps, 37 Ragtopman if you were to take the fan belt off you could motorize the generator, to see if the generator spins [ TAKE CARE ] BECAREFULL,,, take a lead from the battery to the arm terminal, use a heavy jumper lead, 10 gauge or more, if it turns slowly the generator need to be cleaned or rebuilt, if it spins fast it sould be ok, if you were to send both items to CERTIFIED AUTO in OHIO, they will check and repair, and set it up to charge correctlly ask JEFF ot EARL 440 439 1100
This message was edited by 37RAGTOPMAN on 10-1-22 @ 10:09 AM
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