This site uses cookies to maintain login information on FarmallCub.Com. Click the X in the banner upper right corner to close this notice. For more information on our privacy policy, visit this link:
Privacy Policy

NEW REGISTERED MEMBERS: Be sure to check your SPAM/JUNK folders for the activation email.

6 volt slow turnover

The Cub Club -- Questions and answers to all of your Cub related issues.
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.
The Riot
10+ Years
10+ Years
Posts: 120
Joined: Mon Aug 06, 2012 7:08 pm
Zip Code: 77441
Tractors Owned: 1963 Cub - Big Red
1972 Cub - Gramps

6 volt slow turnover

Postby The Riot » Tue Jan 03, 2017 3:52 pm

Hello Everyone,
I hope that you are off to a great 2017. I'm looking forward to a great year and plan to put in my 1/4 acre garden this year, so I'm trying to get my Cub all tuned up for the season.
The problem I'm having is my starter turns the engine very, very slowly and barely cranks. I got my generator checked out and the repair shop said that the gen was good but changed my V. Regulator. Initially, I was showing a sight positive charge, but the needle on the Volt Meter jumped around a lot, then after a few days of running the needle is stuck on discharge.
I have a relatively new battery and it tested good, and even when I put a charger on it, the starter seems to crank very slowly, better but slow.

Do I need a stronger battery, one with more cranking amps? Any ideas on what I might have going on, suggestions?

Thanks,
The Riot

SPONSOR AD

Sponsor



Sponsor
 

tst
10+ Years
10+ Years
Posts: 5184
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: 6 volt slow turnover

Postby tst » Tue Jan 03, 2017 4:15 pm

make sure you have good battery cables and connections, good grounds

User avatar
Mike in Louisiana
10+ Years
10+ Years
Posts: 7805
Joined: Tue Feb 15, 2005 10:10 am
Zip Code: 71023
Circle of Safety: Y
Location: LA, Doyline

Re: 6 volt slow turnover

Postby Mike in Louisiana » Tue Jan 03, 2017 4:19 pm

Try cleaning all terminal connections so they are nice and shinny. Tell us what size the big battery cables and ground cable are and where the ground cable connects to ground. Came from factory with positive ground so tell us if it is wired neg or pos ground.
1975 cub (LouAnn) serial # 245946, 1941 John Deere Model H

Good judgment comes from experience,
and a lot of that comes from bad judgment. Will Rogers

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 20336
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: 6 volt slow turnover

Postby Eugene » Tue Jan 03, 2017 4:33 pm

Move the battery ground cable from the battery box to the top of the transmission. While in the auto parts store, purchase a new ground cable.

Try the suggestions above.

Couple other possibilities, starter needs repair and that your newly purchased regulator is faulty.
I have an excuse. CRS.

User avatar
Steve Butram
Cub Pro
Cub Pro
Posts: 2458
Joined: Mon Feb 17, 2003 7:53 am
Zip Code: 47906
eBay ID: steveb05
Tractors Owned: 1947 in well used condition
1948 restored
Nice original 1950 just out of the Demo Range
628 2 wheel Trailer
1950 Demo
Tryke
Rat Cub
Circle of Safety: Y
Location: IN West Lafayette

Re: 6 volt slow turnover

Postby Steve Butram » Tue Jan 03, 2017 5:53 pm

Attach some jumper cables from the battery to the corresponding connections . Negative to the starter switch and positive to body ground. If it turns over faster that may indicate that the cables may have internal corrosion causing a voltage drop
Be prepared to be unprepared Seth Goden

inairam
5+ Years
5+ Years
Posts: 2803
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 6 volt slow turnover

Postby inairam » Tue Jan 03, 2017 6:19 pm

a Properly set up 6 volt system will start the cub just fine. Do as other have suggested and clean the connection and move the ground cable. My 1949 had the same issue and it turned out to be the bushings in the starter were binding but check everything else first.

" running the needle is stuck on discharge" Make sure you wired the regulator correctly and clean the connections.
When you only have 9 horsepower you need to know the names of all of the ponies!

The Riot
10+ Years
10+ Years
Posts: 120
Joined: Mon Aug 06, 2012 7:08 pm
Zip Code: 77441
Tractors Owned: 1963 Cub - Big Red
1972 Cub - Gramps

Re: 6 volt slow turnover

Postby The Riot » Tue Jan 03, 2017 7:35 pm

Thanks again, everybody. I'm thinking a good clean up of all contact points, ground etc.,will be the first order of business and I like the idea of going direct with jumper cables, but considering what I see it doing I'm betting on the starter brushes. Of course it's probably a combination of things.

It looks like these VRs are pretty temperamental, the one I has is brand new and it surely looks like it's now working properly.

I appreciate all of the expert advice.

I'll post the findings and results ASAP.

The Riot

User avatar
Stevetractor
5+ Years
5+ Years
Posts: 233
Joined: Wed Apr 08, 2015 1:03 pm
Zip Code: B0v1a0
Tractors Owned: 1952 Farmall Cub
1955 Farmall Cub
1968 International Cub
Contact:

Re: 6 volt slow turnover

Postby Stevetractor » Tue Jan 03, 2017 7:55 pm

:tractor: I like the 6v postitve ground systems if there maintained well. The proper cable size to battery with soldered terminals makes a big difference. If u changed voltage regulator, make sure u polarized it as per owners manual. If u think starter may be weak brillimans sell and overhaul kit with bushings and brushes very reasonable. Good for another 50 years.
I grow a large garden as well, can't wait till spring

Gary S.
10+ Years
10+ Years
Posts: 428
Joined: Wed Nov 16, 2005 9:05 pm
Zip Code: 60102
Tractors Owned: '49 Farmall Cub purchased 1960
'59 International Lo-Boy purchased 1987
'48 Ford 8N family owned since new

L59 woods mower
Mott Flail mower 4'
Mott Flail mower 6'
Prewitt post hole digger with mounts for Cub and Ford
Grading and leveling blade with snow ext and hydraulic angle
Location: Algonquin Illinois

Re: 6 volt slow turnover

Postby Gary S. » Tue Jan 03, 2017 9:49 pm

Last time I had a generator rebuilt I took the regulator in with it,the shop repaired my generator,bench ran it and adjusted the regulator to suit.

User avatar
Stevetractor
5+ Years
5+ Years
Posts: 233
Joined: Wed Apr 08, 2015 1:03 pm
Zip Code: B0v1a0
Tractors Owned: 1952 Farmall Cub
1955 Farmall Cub
1968 International Cub
Contact:

Re: 6 volt slow turnover

Postby Stevetractor » Tue Jan 03, 2017 11:44 pm

As a side note I have found the newer vr's to be not as reliable as they once were. Either the import or US built ones. I had Wiltons auto electric build me two solid state ones probably 8?years ago. Unfortunately the owner passed away. They have never given a bit of trouble and unless u take cover off vr u don't know they have been modified. Clover systems in California make them now but have never tried there's.

inairam
5+ Years
5+ Years
Posts: 2803
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 6 volt slow turnover

Postby inairam » Wed Jan 04, 2017 6:54 am

I agree with Steve the VR available now are not reliable. I have two from Clover and they have worked so far but it has only been a season viewtopic.php?f=1&t=94792
When you only have 9 horsepower you need to know the names of all of the ponies!

The Riot
10+ Years
10+ Years
Posts: 120
Joined: Mon Aug 06, 2012 7:08 pm
Zip Code: 77441
Tractors Owned: 1963 Cub - Big Red
1972 Cub - Gramps

Re: 6 volt slow turnover

Postby The Riot » Wed Jan 04, 2017 7:14 am

I sent a note to Clover Systems to get details about their Solid State VR, I'm very suspicious of the aftermarket mechanical VRs, very poor quality. The first one I got was bad out of the box, the very well known vendor sent me a new one without question and didn't even want the bad one back.
The generator repair shop that checked out my gen did bench test and set my gen with the VR.

I believe I will probably get a rebuild kit for my starter and refurb it. Also, I will post results on the Solid State VR.

Thanks Again to all.

The Riot

User avatar
Slim140
5+ Years
5+ Years
Posts: 4908
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 00000
Tractors Owned: .
1970 International 140
1972 International 140
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original
Circle of Safety: Y

Re: 6 volt slow turnover

Postby Slim140 » Wed Jan 04, 2017 7:48 am

Get a timing light and check your timing on the engine, use a 12V external source to power the light. You would be surprised what a little out of adjustment timing will do to a 6V system when cranking.
Every home is a school, what are you teaching?

Circle of Safety

Scrivet
10+ Years
10+ Years
Posts: 2929
Joined: Sun Apr 19, 2009 9:51 pm
Zip Code: 63664
Location: MO, Potosi

Re: 6 volt slow turnover

Postby Scrivet » Wed Jan 04, 2017 7:50 am

Stevetractor wrote:....... If u changed voltage regulator, make sure u polarized it as per owners manual. ......
Minor point, but to be technically correct, "it" is the generator, not the regulator, that is being polarized. (Maybe you meant that and just shortened your description a little to much???) The magnetic field in the generator is polarized to the correct orientation by using the easily accessible, and usually better marked, connections on the regulator (which leads to some thinking they are polarizing the regulator). The regulator connections are electrically the same as the locations on the generator, which are usually harder to get to, and the markings are usually painted over and difficult to read. That is as long as it was wired correctly.

User avatar
Stanton
Cub Pro
Cub Pro
Posts: 7760
Joined: Mon Jun 22, 2009 6:56 am
Zip Code: 64070
Tractors Owned: 1942 Farmall AV, serial #87025
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
Circle of Safety: Y
Location: Lone Jack, MO

Re: 6 volt slow turnover

Postby Stanton » Wed Jan 04, 2017 7:56 am

Just reading thru this thread for the first time and I didn't see you reporting back about cleaning connections or trying to jump start directly to the starter switch and good body ground.

Lots of good suggestions above. Please let us know which ones you actually did and the results before you start rebuilding or replacing things. This will help us diagnose the issue AND be a good reference for future readers of this thread (to have problem stated, suggested solutions, and problem solved all in same thread). Help us help you. :)
Stanton
Image Circle of Safety


Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 20 guests