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Tracy Martin TN 
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10738
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 Topic: D15 not charging
Posted: 20 hours 21 minutes ago at 10:17pm |
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I have a D15 II that is not charging I think. It has the generator and voltage regulator setup. What do I check it, how do I check it. Thanks, Tracy
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87234
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Posted: 20 hours 9 minutes ago at 10:29pm |
Ground the "F" wire on the Generator and see if it starts charging.
Momentarily touch "FLASH" the "A" wire on the Generator to the battery NEGATIVE terminal and see if it starts charging.. ( assume your are positive ground ?)
both of these tests to see if the REGULATOR is the problem..
You can also take a volt meter and put across the two generator terminals while running and see what the voltage is... to test the Generator..
Edited by steve(ill) - 20 hours 7 minutes ago at 10:31pm
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Like them all, but love the "B"s.
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snowman(MI)
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Joined: 12 Sep 2009
Location: Sand Lake, MI
Points: 374
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Posted: 9 hours 37 minutes ago at 9:01am |
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Check to see if your brushes are freely moving inside the generator. I believe you can do this without removing the generator. Just an idea as I had a electric alternator/starter guy show me this. Believe he used a small pick to try and move the brush.
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1950 WD, 1966 D-10 III, 1961 D-10 II, 1966 D-15 II Gas, A-C Minibike, 917 Hydro Mower, 917 Hydro Blower w/cab, West Michigan "Allis Express"
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87234
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Posted: 9 hours 33 minutes ago at 9:05am |
this guy shows how to test a generator.. I dont do the first "motor" test... I start a the 1:20 mark for what i described above...
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Like them all, but love the "B"s.
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Les Kerf
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Joined: 08 May 2020
Location: Idaho
Points: 1216
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Posted: 7 hours 40 minutes ago at 10:58am |
 Tracy Martin TN wrote:
I have a D15 II that is not charging I think. It has the generator and voltage regulator setup. What do I check it, how do I check it. Thanks, Tracy |
The first step in troubleshooting is to verify if it is indeed charging or not. What are the symptoms?
Does the ammeter show any movement at all in either direction with the tractor running?
With the engine revved up, try putting a voltmeter directly on the battery terminals (NOT on the cable connections). A 6 Volt system should show at least 6.8 Volts or more, 12 Volt system should be above 13.
Next, check the voltage right at the Armature terminal on the generator; if that voltage is low, then proceed with the steps outlined by Steve.
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11981
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Posted: 7 hours 38 minutes ago at 11:00am |
Remember, just because a Generator "motors" doesn't mean it'll charge. The best way to test the unit is take it to a rebuilder and have him load test the unit. If the unit load tests out okay, clean and check the ground on the Voltage Regulator. If it still isn't charging, remove the VR cover and give the contacts a spritz of Brakekleen or TV tuner cleaner and then try it. If the contacts are greenish probably time for retire the VR with a new unit.
Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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