Eureka Moment? - Update

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

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.
User avatar
ricky racer
5+ Years
5+ Years
501 Club
501 Club
Posts: 3695
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Eureka Moment? - Update

Postby ricky racer » Fri Jun 07, 2013 8:00 pm

You are aware of my woes trying to get my '57 charge. I worked through the trouble shooting flow chart and according to it, my generator was bad. I had another generator on the shelf so I pulled it down and installed it. Same results. I pulled the better generator apart inspected cleaned the commutator, bushes etc. and reassembled. Gauge still showing discharge. I checked the output of the generator at the "Gen" post with an analog volt meter (my digital VOM danced around to much). Output was just shy of 2 volts.

I took the off the shelf generator apart and did all the checks, cleaned the commutator, bushes etc. just like I did the other one. I installed it in place of the original and gave it another shot. Started the Cub and the gauge again showed discharge. Bummer. :evil: I checked the output again at the "Gen" post grounding other lead to the radiator. It showed again..... slightly less than 2 volts. Hmmmm..... what a coincidence. :shock: The reading was exactly the same. Now I'm thinking voltage regulator. What do you think??

According to the flow chart, the problem was the generator and the voltage regulator checked out ok. What if the regulator is only partially working?? Could that be?? Anyway, anyone have experience with TSC voltage regulators? I could pick one up tomorrow and maybe get this thing done.
Last edited by ricky racer on Sat Jun 08, 2013 7:06 pm, edited 1 time in total.
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

User avatar
John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
501 Club
501 Club
Posts: 21534
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: Eureka Moment?

Postby John *.?-!.* cub owner » Fri Jun 07, 2013 9:23 pm

Ground the F lead, if the voltage at the generator lead goes higher, you either have a bad regulator or a bad ground at the regulator.
If you are not part of the solution,
you are part of the problem!!!

User avatar
Boss Hog
Cub Pro
Cub Pro
501 Club
501 Club
Posts: 10192
Joined: Mon Oct 24, 2005 8:35 pm
Zip Code: 23962
eBay ID: dmb2613
Circle of Safety: Y
Location: VA. Randolph

Re: Eureka Moment?

Postby Boss Hog » Fri Jun 07, 2013 9:26 pm

Ground the field terminal of the gen, it should go to full charge. If not you have a bad gen.
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg

User avatar
Boss Hog
Cub Pro
Cub Pro
501 Club
501 Club
Posts: 10192
Joined: Mon Oct 24, 2005 8:35 pm
Zip Code: 23962
eBay ID: dmb2613
Circle of Safety: Y
Location: VA. Randolph

Re: Eureka Moment?

Postby Boss Hog » Fri Jun 07, 2013 9:29 pm

also make sure the fan belt is tight[ belt from the fan to the crank pulley] this could be the problem since they both did the same thing
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg

TJG
5+ Years
5+ Years
501 Club
501 Club
Posts: 1224
Joined: Wed Jul 02, 2008 6:11 am
Location: MN, Mankato

Re: Eureka Moment?

Postby TJG » Fri Jun 07, 2013 10:04 pm

I have a question. It is stated that if the F terminal is grounded that there should be a full charge. Is the full charge noted on the tractor ammeter, or on a volt-ohm meter reading?

Thanks,

Todd

User avatar
Wakulla Bill
5+ Years
5+ Years
Cub Star!!
Cub Star!!
Posts: 358
Joined: Thu Jun 30, 2011 9:19 pm
Zip Code: 32327
Tractors Owned: Now
73 MF 165
63 MF 203 Ind
44 BF Avery "A" Project
51 Farmall Cub
49 Farmall Cub
48 Farmall Super A
Circle of Safety: Y
Location: Crawfordville, Fla

Re: Eureka Moment?

Postby Wakulla Bill » Fri Jun 07, 2013 10:49 pm

I use a volt/ohm meter to check voltage during this test.
"Work smarter; Not harder"

User avatar
ricky racer
5+ Years
5+ Years
501 Club
501 Club
Posts: 3695
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Re: Eureka Moment?

Postby ricky racer » Sat Jun 08, 2013 7:12 am

John *.?-!.* cub owner wrote:Ground the F lead, if the voltage at the generator lead goes higher, you either have a bad regulator or a bad ground at the regulator.


Bingo!!! We have a winner!!!! I hope to get her fixed today. :{_}: Thanks for the help guys.
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

User avatar
ricky racer
5+ Years
5+ Years
501 Club
501 Club
Posts: 3695
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Re: Eureka Moment? - Update

Postby ricky racer » Sat Jun 08, 2013 7:15 pm

I went to town and picked up a "made in China" :evil: regulator at TSC and installed (between graduation parties) it on my '57 Lo-Boy. As soon at I started it up, lo and behold...it's charging like it should. Finally. I figured it had to be the regulator when I checked the output of the 2 generators and found they both put out exactly the same incorrect voltage.

Thanks guys for all the help. :big afro:
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

TJG
5+ Years
5+ Years
501 Club
501 Club
Posts: 1224
Joined: Wed Jul 02, 2008 6:11 am
Location: MN, Mankato

Re: Eureka Moment? - Update

Postby TJG » Sat Jun 08, 2013 8:06 pm

Ricky, if you have a SKU or other parts number off of the box please post it. It will save me some time.

Thanks,

Todd

User avatar
ricky racer
5+ Years
5+ Years
501 Club
501 Club
Posts: 3695
Joined: Wed Sep 12, 2007 8:40 pm
Zip Code: 49120
Circle of Safety: Y
Location: Niles / Buchanan, Michigan

Re: Eureka Moment? - Update

Postby ricky racer » Sun Jun 09, 2013 7:44 pm

TJG wrote:Ricky, if you have a SKU or other parts number off of the box please post it. It will save me some time.

Thanks,

Todd


Image

Image

Pictures of the package.
1929 Farmall Regular
1935 John Deere B
1937 John Deere A
1941 John Deere H
1952 John Deere B
1953 Farmall Cub

bythepond88
10+ Years
10+ Years
501 Club
501 Club
Posts: 1421
Joined: Sun Apr 30, 2006 2:54 pm
Zip Code: 60073
Circle of Safety: Y
Location: IL, Round Lake Heights

Re: Eureka Moment? - Update

Postby bythepond88 » Mon Jun 10, 2013 12:30 pm

Don't throw the old regulator out. Pull the cover and check the air gaps. I have resurrected two VRs by adjusting the air gaps. The specs are given in the shop manual.
Michael Cummings
Eddie - a 1959 International Lo-Boy named after my father in law, who who bought her new.


Return to “Farmall Cub”

Who is online

Users browsing this forum: Cubfriend, inairam, tin man and 3 guests