Amp gauge

The Cub Club -- Questions and answers to all of your Cub related issues.
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Bamacub
10+ Years
10+ Years
Posts: 135
Joined: Sat Feb 15, 2003 9:23 am
Location: Ashville Alabama

Re: Amp gauge

Postby Bamacub » Wed Apr 07, 2021 2:46 pm

Update on the alternator install. Wired it with the diode and it is charging, but the ampmeter hand is pegged all the way to the plus side. volt metrr reads 14 volts with tractor running. Lights are working and with the tractor not running turn the lights on it's shows no discharge. Tractor off turn the ignition on shows a little discharge

tst
10+ Years
10+ Years
Posts: 4636
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Amp gauge

Postby tst » Wed Apr 07, 2021 3:02 pm

it is pegged because that is only a 30 amp gauge, alternator puts out more than 30 amps

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 19603
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Amp gauge

Postby Eugene » Wed Apr 07, 2021 3:28 pm

You probably need a 60 amp gauge.

My tractors with 60 amp gauge and alternator. Battery fully charged, upon engine start up the gauge will read above 30 amps, then drop down to near zero amps in a minute or two.

If the tractor hasn't been started for a month or two, the amp gauge will read above 30 amps for +/- 5 minutes.
I have an excuse. CRS.

Jim Becker
Team Cub
Team Cub
Posts: 16368
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Amp gauge

Postby Jim Becker » Wed Apr 07, 2021 10:04 pm

Put a charger on the battery over night. If mostly charged, the alternator should cut back the charge rate.
Your light switch may be connected to feed from the wrong terminal on the ammeter.

Bamacub
10+ Years
10+ Years
Posts: 135
Joined: Sat Feb 15, 2003 9:23 am
Location: Ashville Alabama

Re: Amp gauge

Postby Bamacub » Thu Apr 08, 2021 8:08 am

I disconnected the lights and meter hand is still peged. Battery is fully charged. With tractor running volt meter at battery reads 14.4 volts. Ampmeter is 30 amp scale, but it should drop back after running a little. I have another cub with an alternator with a 30 amp scale meter and after startup it drops back to near zero, but still reads 14.4 volts at the battery.

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 4913
Joined: Thu Aug 03, 2006 6:20 am
Zip Code: 43358
Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
Circle of Safety: Y
Location: OH West Mansfield

Re: Amp gauge

Postby Gary Dotson » Thu Apr 08, 2021 8:14 am

After it has run a bit, the ammeter will drop back. Your meter is probably only a 15 amp meter, that alternator is rated for 32 amp so it will peg if the battery is down a bit. Charge it as Jim mentioned and it should be fine. My tractors do that too but after the system has normalized, it's minimal.

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 19603
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Amp gauge

Postby Eugene » Thu Apr 08, 2021 8:26 am

Amp probe and test the amp flow. $9.99 at Harbor Freight.

Swap the amp meter. Test the battery.

Basically, find out how many amps are flowing and if your tractor amp gauge is accurate.
I have an excuse. CRS.

Bamacub
10+ Years
10+ Years
Posts: 135
Joined: Sat Feb 15, 2003 9:23 am
Location: Ashville Alabama

Re: Amp gauge

Postby Bamacub » Thu Apr 08, 2021 2:27 pm

Good news my friend ran the tractor about an hour and the ampmeter hand is just a tick on the charge side just where it is supposed to be. Thanks to everyone for giving their input lots of knowledge here.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: kully560 and 0 guests