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48 Cub with a charging problem

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Dave

11-27-2003 09:22:23

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Recently got a 48 Cub with a ammeter that was not working. It is still 6V. Has lights and electric start. Put in a new ammeter and found there was only sporadic charging. Took the generator had it checked (barely charging) and had it rebuilt and since the battery was old, got a new one. Still have a charging problem.

Ammeter shows discharge as soon as switch is "on" and before I hit the starter.

Voltage regulator is newer. What do I need to do to check the output of the generator and how do I check the regulator to be sure it is working right?
6 V systems are new to me, any and all suggestions as to how to find the problem and fix it are appreciated. Thanks

Dave Hanna

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gene b

11-28-2003 03:21:05

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Re: 48 Cub with a charging problem in reply to Dave, 11-27-2003 09:22:23

First when sw is on should show discharge as amps going to coil. When it runs ground the field term of the gen to a good ground if then it shows charge it is the reg.maybe you need to polorize the gen by just momently touching the Batt term on the reg to the terminal on the gen marked with A using piece or wire. Use a meter to make sure the gen is ground to the frame also the reg is grounded also the control where the amp is mounted. Mite alsoneed to shine points on reg with piece of thin cardboard like match book cover o like to use a white piece to see if itis clean or not. I NEVER MESS WITH adjusting points on the reg.

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gene b

11-28-2003 03:18:04

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Re: 48 Cub with a charging problem in reply to Dave, 11-27-2003 09:22:23

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Rudi

11-27-2003 16:56:19

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Re: 48 Cub with a charging problem in reply to Dave, 11-27-2003 09:22:23

Dave:

If you check on the link below, it will take you to the Cub server. On the server is a couple of links to some very informative information.

Read the Best of H.L. Chauvin - his advice is invaluable.

Check out the GSS-1012 Electrical Service Manual under Blue Ribbon Service Manuals. The whole diagnostic procedure is spelled out.

Check the wiring diagrams that you will find on the Cub FAQ's #2 link, they will help you chase down the wiring.

Also, the Owner's Manual will tell you clearly how to polarize the generator. Oh, on a 48 you most likely have a cut-out and not a regulator. Make sure that your are still positive ground.

Cub Manuals

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Steve - IN

11-27-2003 10:22:15

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Re: 48 Cub with a charging problem in reply to Dave, 11-27-2003 09:22:23

Dave,
As soon as you switch on, the battery is going to drain into the coil, and move the ammeter to the left. What happens when you start the engine and rev it up to a speed that should get the generator charging the battery? Is the needle left or right of center then?

If still left or discharging, do a search from the top of this page on the procedure for polarizing the generator / regulator. You should find at least 20 descriptions of how to do it. If polarizing doesn't do it, suspect a bad regulator or loose / grounded wiring. If you still suspect the generator, a search here will pull up another 20 posts on how to measure the output of the generator. You'll probably also find a few posts on how to adjust the charging side of the voltage regulator.

A 6V gen system operates just like a 12V gen system - so don't let it scare you - it's not rocket science. Lots of us have had the same problems; that's why you'll find so many posts and articles about it by searching the archieves here.

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