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I have a 55 A1 with 24 v system with an Autolite external regulator that does not appear to be charging. I followed the steps Wes K outlined in his reply dated March 14, 2012. Basically I have load tested the batteries, flashed the field, and full fielded the generator. The generator test came back good with voltage climbing to 28 before removing the jumper from the positive starter post and the C terminal. The post goes on to say if voltage does not climb above 26, go to step 4. What do I do now? I did have the regulator and generator at the auto electrical shop but, other than confirm my tests on the generator, they were not too helpful. Does this mean the regulator is bad and should be replaced? All connections have been cleaned and appear to be in good working order. Any help would be greatly appreciated. Thanks.

You need to adjust and test your regulator. I would download the regulator test and troubleshooting guide from this site. I read through the whole thing and what I found is you can do a static test on the individual parts and make the relay gap adjustment which isn't that hard or you can do a in-circuit test which requires a test setup and for this you need to know what you are doing.

Unless you are really into tinkering with electronics, I would ship it to a place that can repair it. If you want to tackle it you need to build your own test setup and you will have to purchase a reostat, shunts, have an extra generator available as a power source, ect, ect, then follow the instructions in the manual.

I see you're also here in Idaho. If you are close to the Treasure Valley. Husky's Auto Electric in Boise, should be able to trouble shoot and possibly repair your regulator, as well as your starter and generator.

Rob,

Why would you jumper the battery hot to the generator's "C" terminal?

The "B" terminal is used for polarizing and full fielding the generator.

citabra wrote:I see you're also here in Idaho. If you are close to the Treasure Valley. Husky's Auto Electric in Boise, should be able to trouble shoot and possibly repair your regulator, as well as your starter and generator.

Or Haines Auto Elect it you're in the Twin Falls area

Wes K
My mistake on typing. I used the B terminal for both full fielding and flashing. Rick, thanks also for the resources although I'm up near Sandpoint and a bit too far away.

If the generator passes the polarizing and full field test then the problem is in the regulator or it's wiring.

Download a copy of the exerpts from TM 9-1825B on the voltage regulator and take them to the auto electric shop with your regulator and generator. Have the technician follow the steps in the manual and then set up the regulator using your generator and in all likelihood you will not need to make any further adjustments when you mount them back in your jeep.