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Tracy Martin TN 
Orange Level Access
Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10698
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 Topic: D15 ammeter
Posted: 18 Oct 2020 at 8:35pm |
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Can a bad ammeter cause a tractor to not charge? Rebuilder says generator and regulator are good. Ammeter always shows discharge. Thanks Tracy
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No greater gift than healthy grandkids!
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Burl
Silver Level Access
Joined: 13 Sep 2014
Location: Aurora Mo.
Points: 232
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Posted: 18 Oct 2020 at 8:43pm |
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Tracy - Just had what you are going thru ! Took a week to find but , it was a poor ground on reg. Took me forever to find . Hope that fixes it.
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MACK
Orange Level
Joined: 17 Nov 2009
Points: 7664
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Posted: 18 Oct 2020 at 10:51pm |
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yes, a bad ammeter can keep them from charging. MACK
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11926
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Posted: 19 Oct 2020 at 7:02am |
Absolutely. An Ammeter is a flow meter. It needs current running through it in order for it to tell you something. It also feeds current to the VR.
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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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10698
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Posted: 19 Oct 2020 at 8:45am |
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How can you test an ammeter? Thanks Tracy
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No greater gift than healthy grandkids!
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Luke114
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Joined: 27 Aug 2019
Location: Washington
Points: 109
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Posted: 19 Oct 2020 at 10:34am |
Hook up the ammeter in series with a battery (or charger) and a headlight. Bulb should be bright and show a few amps of draw on the ammeter. You can do this with either 6 or 12 volt.
Or if you have headlights on the tractor, just turn them on when the tractor is not running and look for the needle to bounce down to a small discharge.
Does your needle ever move at all? And you're sure the meter isn't hooked up backwards?
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10698
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Posted: 19 Oct 2020 at 10:40am |
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Meter is hooked up correctly. This just started a while back. Thanks Tracy
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No greater gift than healthy grandkids!
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Acdiesel
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Joined: 15 Jun 2012
Location: Rochester Ohio
Points: 2574
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Posted: 19 Oct 2020 at 10:40am |
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also you could put a jumper wire on the amp meter and a OHM Meter on your battery and see if its charging.
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D19 Diesel,D17 Diesel SER.3
2-D14, 2-D15 SER.II WF/NF
D15 SER.2 DIESEL
D12 SER.I, D10 Ser.II
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Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)
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Ted J
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Joined: 05 Jul 2010
Location: La Crosse, WI
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Posted: 19 Oct 2020 at 4:22pm |
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I agree, trace where the ground is and clean it real good. Then take the ends off the battery and clean them real good too. I just had the same problem on a CA that was working well and then just one day...........It was the + side as that was my ground. Quick fix.
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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