Guys, I have two Cubs. One a 1950 with a Magneto ignition (Jenny), one with a distributor (Jersey), a 1952 model. Jenny is in working order with a new clutch and she runs great, but the Ammeter is reading on the minus side. I bought her a year ago.. What do I need to look for to get her in the charging mode. Where do I need to place my volt meter leads to see if the generator is working.
Thanks for your help in advance.
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Ammeter, Plus or Minus Charging
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Re: Ammeter, Plus or Minus Charging
Welcome to the forum. You can check voltage output at the battery terminals. The link below will also help in troubleshooting
http://www.cleancomputes.com/Cub/Mainte ... 0Chart.jpg
http://www.cleancomputes.com/Cub/Mainte ... 0Chart.jpg
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- 10+ Years
- Posts: 30
- Joined: Sat Jul 14, 2012 6:46 pm
- Zip Code: 24352
- Tractors Owned: 1950 Cub "Jersey"
Ferguson TO 20
1952 Cub "Jenny"
1951 Cub. "Wilkes"
2014 Kubota L3200 HST - Circle of Safety: Y
- Location: VA, Laurel Fork
Re: Ammeter, Plus or Minus Charging
Thanks Bill, Will follow the chart and test. Thanks for the help. Will respond with the result
Wagon
Wagon
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Re: Ammeter, Plus or Minus Charging
Wagon19 wrote:Jenny is in working order with a new clutch and she runs great, but the Ammeter is reading on the minus side.
Is this Cub positive ground or negative ground? That does make a difference. The Cubs are positive ground originally, so if someone changed the ground then the ammeter is wired backwards and will show a negative even though it is charging. If your Cub is still positive ground, you may need to polarize the generator. How To Polarize Your Generator.
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
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- 10+ Years
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- Joined: Sat Jul 14, 2012 6:46 pm
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- Tractors Owned: 1950 Cub "Jersey"
Ferguson TO 20
1952 Cub "Jenny"
1951 Cub. "Wilkes"
2014 Kubota L3200 HST - Circle of Safety: Y
- Location: VA, Laurel Fork
Re: Ammeter, Plus or Minus Charging
Rudi, thanks. I did change the battery cables, and the ammeter started reading on the positive side at about 12 amps.
I had no idea someone had changed it over to a negative ground. The started drags, but will start once she turns over twice. It has a new battery with a full charge. Does it sound like starter problem, or a wiring or connection problem
I had no idea someone had changed it over to a negative ground. The started drags, but will start once she turns over twice. It has a new battery with a full charge. Does it sound like starter problem, or a wiring or connection problem
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Re: Ammeter, Plus or Minus Charging
Check connections for cleanliness. Use a volt ohm meter to check continuity and resistance. Use heavy jumper cable to jump from battery terminal to starter terminal. If it starts better it's the wire, if not it's the starter.
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Re: Ammeter, Plus or Minus Charging
Check voltage across the battery, while attempting to start, then check it at the starter under the same condition. If there is a big difference, it's a cable problem, if not, it's a starter problem. It could be the switch on the starter.
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Re: Ammeter, Plus or Minus Charging
I agree with Gary and Dan. I don't think it is so much the starter as the connections. Start at the battery and ensure the terminals are clean and bright as well as the cable terminal ends. Check for cracks in the insulation and any corrosion. Most likely though will be the saddle switch.... don't ask why I am leaning toward the switch. They can corrode easily especially if it is one of the cheaper after market ones. Remove the saddle switch and clean it up good so everything is bright and clean. You should notice a lot better movement when you pull the starter rod.
Keep us posted.
Keep us posted.
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
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- 10+ Years
- Posts: 30
- Joined: Sat Jul 14, 2012 6:46 pm
- Zip Code: 24352
- Tractors Owned: 1950 Cub "Jersey"
Ferguson TO 20
1952 Cub "Jenny"
1951 Cub. "Wilkes"
2014 Kubota L3200 HST - Circle of Safety: Y
- Location: VA, Laurel Fork
Re: Ammeter, Plus or Minus Charging
Guys, just put new ends on an old battery cable and fastened one end onto the starter post and a new end on the battery post. Jenny started much better. Next I will will check the saddle switch and clean it up. I remember a couple of years ago, that was the main problem with the Ferguson TO 20.
I appreciate all of your help and suggestions.
I appreciate all of your help and suggestions.
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Re: Ammeter, Plus or Minus Charging
Remember that the new ends are a temp fix. They love to harbour corrosion. Use tinned wire with crimped ends, not the ones that bolt on. Otherwise go for a new cable. Just my opinion.
"I'd rather be a mechanic in the shop"- Henry Ford
252646 & 221525. 195897 (Gone, but not forgotten)
252646 & 221525. 195897 (Gone, but not forgotten)
- Rudi
- Cub Pro
- Posts: 28706
- Joined: Sun Feb 02, 2003 8:37 pm
- Zip Code: E1A7J3
- Skype Name: R.H. "Rudi" Saueracker, SSM
- Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1968 Cub Lo-Boy
Dad's Putt-Putt
IH 129 CC
McCormick 100 Manure Spreader
McCormick 100-H Manure Spreader
Post Hole Digger
M-H #1 Potato Digger - Circle of Safety: Y
- Twitter ID: Rudi Saueracker, SSM
- Location: NB Dieppe, Canada
- Contact:
Re: Ammeter, Plus or Minus Charging
Wagon:
Check this out : How To Build A Replacement Battery Cable. It pays for itself in a very short time
Check this out : How To Build A Replacement Battery Cable. It pays for itself in a very short time
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
-
- 10+ Years
- Posts: 30
- Joined: Sat Jul 14, 2012 6:46 pm
- Zip Code: 24352
- Tractors Owned: 1950 Cub "Jersey"
Ferguson TO 20
1952 Cub "Jenny"
1951 Cub. "Wilkes"
2014 Kubota L3200 HST - Circle of Safety: Y
- Location: VA, Laurel Fork
Re: Ammeter, Plus or Minus Charging
I read the link. Beats the heck out of paying $98.00 for a new cable. It will take a few days for me to get to this, maybe next weekend. Will let you know how it all turns out
Wagon
Wagon
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