2N Ford single-pole generator TEST

Farmer MM · May 5, 2018

I put in a new amp gauge (along with all new wiring), and it mostly stays at center, no matter the load or rpm. Generator belt is tight. While running, if I unhook battery cable, it dies. Shouldn't it keep running IF generator is working? What is an easy test of the generator (hook voltage meter to the output generator post, and ground meter?)? Could the Cutout be the issue? Simple test of it?

Thanks.
DLT

R Geiger · May 5, 2018

Make jumper wire with alligator clips and jump around cutout.

Bob · May 5, 2018

Check voltage between the chassis and both sides of the cutout while it's running, and post back.

Later models with a VR were supposed to bring the battery up to about 7.4 Volts, so you are looking for a charging voltage in that range

Tim PloughNman Daley RIP · May 6, 2018

What is the condition of the battery? 6-volt or 12-volt? Get it tested -it must sustain a charge under load to be effective. Your local starter shop can bench test it. Simply charging the battery does not ensure you have a good battery. The 9N-10000-C and 2N-10000 generators output are 11.5 amps. They are the 1-wire/3-brush type with the 3rd brush adjustment screw on back panel. They both used the round-can cutout, not a voltage regulator. The 2N generator came with a tensioning bracket attached to the barrel. The 9N-C generator had a belt tensioning kit available from the dealer. It secured around the barrel via a steel band. Prior to the 9N-C generator, no belt tensioning was used and thus was one of the problems with the charging system. The belt tensioning kit will not work on the earlier 9N-A and 9N-B generators -barrels are too small.

FORD 9N-10000-C GENERATOR:

FORD 2N-10000 GENERATOR:

Tim *PloughNman* Daley(MI)

Jim L WA · May 6, 2018

Hi Farmer NM, do you have the I&T FO-4 manual? There is a great description of the charging circuit and how the cutout relay works in paragraphs 65 and 66. Like Bob G said, the simple test is to bypass the cutout relay. In looking at the schematic in figure 74 you can see that if the cutout relay never closes you won't see any deflection on the ammeter and the tractor would shut down if you removed a battery cable.

Farmer MM · May 8, 2018

Thanks all!

I put by-pass a-clips on Cutout, rev'd the rpms, and the amp-gauge starter to jump to the left. I had switched the wire-terminals on the gauge as I thought I may have had them backwards, but it appears I had them correct before, so will switch back. Can the Cutout be removed, cleaned up, and reused; or is it a throw-away-buy-new-one unit? My battery is 6-months old, and like new, with ample juice. Gen has a tight belt, definitely no slippage. I'm going to test the voltage coming off it's terminal. DLT

Bob · May 8, 2018

Is the cutout installed correctly (BATT and GEN terminals connected correctly)?

You need to monitor the generator's output voltage to be SURE it reaches the correct "cut in voltage "spec" for the cutout. I can't remember, offhand, exactly what that voltage is, perhaps someone else will add that detail, or I will post back later.

If you muck with the cutout and it cuts in/cuts out at too low a voltage it likely won't disconnect at shutdown, which can overheat and destroy the generator and "kill" the battery.

As an alternative to either tinkering with it or replacing it with a new mechanical cutout likely made in "The Land of Almost Right", there's aftermarket solid-state cutouts on the market, and Soundguy and others here have built home-brew versions that have apparently worked well.

Farmer MM · May 17, 2018

Hello! With tractor running, generator was varying voltage output from 7 to 19 volts. My meter was constantly varying voltage. Does this sound normal? If so, my cutout is dead.

JMOR · May 17, 2018

(quoted from post at 17:19:41 05/17/18) Hello! With tractor running, generator was varying voltage output from 7 to 19 volts. My meter was constantly varying voltage. Does this sound normal? If so, my cutout is dead.

robably means you are using a digital meter vs analog, and the electrical brush noise is driving it nuts. Jumper the cut out & measure battery voltage instead.

Farmer MM · May 18, 2018

Hello, straight battery voltage: 6.22v. Engine running (mid-throttle), jumpered Cutout: 6.8 +/- at battery.

JMOR · May 18, 2018

(quoted from post at 17:01:19 05/18/18) Hello, straight battery voltage: 6.22v. Engine running (mid-throttle), jumpered Cutout: 6.8 +/- at battery.

hose numbers look like generator is charging the battery. The longer you run it the higher the 6.8 should go. Sounds like cut out problem at this point.

Farmer MM · May 18, 2018

(quoted from post at 14:13:41 05/18/18)

(quoted from post at 17:01:19 05/18/18) Hello, straight battery voltage: 6.22v. Engine running (mid-throttle), jumpered Cutout: 6.8 +/- at battery.

Click to expand...

hose numbers look like generator is charging the battery. The longer you run it the higher the 6.8 should go. Sounds like cut out problem at this point.

Ok, thanks. Ordering new one.

Farmer MM · Jun 6, 2018

New cutout did the trick! Works great!

JMOR · Jun 6, 2018

(quoted from post at 20:18:48 06/06/18) New cutout did the trick! Works great!

ood deal! I like success stories.

R Geiger · Jun 6, 2018

Glad you found your problem! Thanks for letting everyone know what solved your problem.

2N Ford single-pole generator TEST

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