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.

Running Rough

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.
ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Tue Sep 12, 2017 7:08 pm

I took the band off and there is some fibrous material on the inside circumference...and it broke in half when it expanded. Does this need to be replaced and if so, what is the material?

SPONSOR AD

Sponsor



Sponsor
 

Bob McCarty
Team Cub
Team Cub
Posts: 11817
Joined: Tue May 25, 2004 8:02 pm
Zip Code: 80501
Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
Circle of Safety: Y
Location: CO, Longmont

Re: Running Rough

Postby Bob McCarty » Tue Sep 12, 2017 8:20 pm

Does it look like a thick waxed/unwaxed brown kraft paper? That was sometimes under the band.
"We don't need to think more,
we need to think differently."
-Albert Einstein

staninlowerAL
10+ Years
10+ Years
Posts: 4974
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (2)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Running Rough

Postby staninlowerAL » Tue Sep 12, 2017 8:43 pm

ajhbike wrote:I took the band off and there is some fibrous material on the inside circumference...and it broke in half when it expanded. Does this need to be replaced and if so, what is the material?
This is intended to act as a dust/moisture seal for the generator. You can use a paper type material or do like the generator/starter repair shop that's near me and use 2 inch wide duct tape and cover it with the band, then trim off the excess width.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Tue Sep 12, 2017 8:54 pm

Thanks

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sat Sep 16, 2017 6:09 am

Need a bit of help here...I disconnected the brushes and the 2 wires from the generator body and I forgot to shoot a pic of how to reconnect. Which wire goes to which brush?
Attachments
Generator wires resized.jpg

Jim Becker
Team Cub
Team Cub
Posts: 17214
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Running Rough

Postby Jim Becker » Sat Sep 16, 2017 8:11 am

The one directly across from the grounded brush connects to the A terminal. The other brush is offset from the other 2 and connects to the field winding.

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sat Sep 16, 2017 7:15 pm

So put the generator back with the new belt and after half a day I learned 2 things....1 is that I wired the brushes wrong (Jim- I had already committed and didn't know that I didn't do it right...wrong!) because although the cub started up right away, the generator started smoking a bit and got hot. The ammeter was pinned on the discharge side. I reversed the wires on the ammeter and it pinned to the charge side. Figured I wired the brushes wrong. But the PITA was getting the generator mounted and connected to the new belt. It was clear that the belt is too short....like a linear inch!

I got it at NAPA and they had cross referenced the one I brought in that was probably 30 years old. It was a 4L210W and it has to be too short. I checked the belt on my Loboy which ran well with its generator and the alternator when I converted and it seems narrower but the numbers are N7215 Extra Service T2. I will try and source the right belt.

Anyway, the tractor runs, I will put the Loboy generator on when I get the right belt and then try and figure out what I did wrong with the generator I cleaned up. I flunked old Wrenching with Rachel's class on Generators

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 17429
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Running Rough

Postby Don McCombs » Sat Sep 16, 2017 7:35 pm

These are the two NAPA belts for your Cub...

Gen - NBH 4L220W
Fan - NBH 2524308
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39

The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sun Sep 17, 2017 8:07 am

Thanks Don, it looks like I bought the right fan belt but the fan belt was definitely wrong.

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Sun Sep 17, 2017 5:44 pm

Yep, that belt was the right one. Installed, wired and she fired right up! Now I will open the other generator that got hot and see what I did. You think I ruined it if the brushes were wired backwards for 10 mins?

Jim Becker
Team Cub
Team Cub
Posts: 17214
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Running Rough

Postby Jim Becker » Mon Sep 18, 2017 3:02 pm

Here is the wire placement. You may have also caused the damage by failing to polarize the generator (temporarily jump a wire from A to BATT before starting engine, explained in multiple past threads.
GeneratorWires.jpg

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Mon Sep 18, 2017 3:46 pm

okay, thanks....I will try and figure out which of the brushes is grounded (presume there is a short wire to that plate/end cap). Yep, didn't polarize it, wouldnt think that would damage it...how would you test or tell if the generator is damaged?

Jim Becker
Team Cub
Team Cub
Posts: 17214
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Running Rough

Postby Jim Becker » Mon Sep 18, 2017 7:13 pm

ajhbike wrote:okay, thanks....I will try and figure out which of the brushes is grounded (presume there is a short wire to that plate/end cap).


The one I labeled "GROUNDED" in the picture.

ajhbike wrote:...how would you test or tell if the generator is damaged?


viewtopic.php?f=1&t=97017

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Mon Sep 18, 2017 7:46 pm

I got that it is the one marked grounded...couldn't miss that. Assuming the bulge/phlange in the cap is to the right (out of your picture), I now know what brush is in the grounded position relative to the phlange where the bolt goes through. Thank you.

ajhbike
5+ Years
5+ Years
Posts: 1614
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 JD B
1949 Ford 8N
1955 Ferguson TO-35
Location: Branford, CT

Re: Running Rough

Postby ajhbike » Tue Sep 19, 2017 7:39 am

Hoping I have this clear
Attachments
My Gen wiring resized.jpg


Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 26 guests