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.

Took apart the carburetor, Need advice.

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.
Daniel H.
10+ Years
10+ Years
Posts: 613
Joined: Mon Feb 03, 2003 1:18 pm
Zip Code: 27055
Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
Circle of Safety: Y
Location: NC, Yadkinville

Took apart the carburetor, Need advice.

Postby Daniel H. » Sun Mar 28, 2004 9:41 pm

It amazes me this old tractor would run at all. It seems these old gals never give up. The latest find in in the carb. The inlet screen was pluged with trash, that's an easy fix, but I've never seen one this clogged and still run. The bigger problem is the IDLE TUBE (251331R1), is it supposed to be threaded at the top? The casting apears to have threads but the tube has a rough edge and just fell out. Next question: Can you still get one of these? It was not included in the rebuild kit from Case/IH :cry: Finally, and what may be the biggest problem, the top is obviously warped; the corner where the part number is stamped is raised up. Is there a fix for this or am I looking at a Zenith replacement here? I've already spent $50.00 on a rebuild kit. Thanks for the advice.
Last edited by Daniel H. on Mon Mar 29, 2004 6:38 pm, edited 1 time in total.
The four most expensive words in tractor restoration: "We might as well..."

SPONSOR AD

Sponsor



Sponsor
 

User avatar
Bigdog
Team Cub Mentor
Team Cub Mentor
Posts: 24144
Joined: Sun Feb 02, 2003 12:50 pm
Zip Code: 43113
Circle of Safety: Y
Location: OH, Circleville
Contact:

Postby Bigdog » Sun Mar 28, 2004 9:51 pm

The idle tube is threaded and is still available from Case IH. As far as straightening the warped body, there is discussion on this in the archives But basically, if you're careful, you can place some washers between the halves except for where the gap is, and try to pull the high side down.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.

My wife says I don't listen to her. - - - - - - - - Or something like that!

Image

http://www.cubtug.com

Daniel H.
10+ Years
10+ Years
Posts: 613
Joined: Mon Feb 03, 2003 1:18 pm
Zip Code: 27055
Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
Circle of Safety: Y
Location: NC, Yadkinville

Postby Daniel H. » Mon Mar 29, 2004 6:41 pm

How would the gasket seal ifyou put washers in there? Sorry, but thats not real clear to me. I tried a search, but didn't find much, seems like George Willer had a picture showing trueing one up on a milling machine once upon a time.
The four most expensive words in tractor restoration: "We might as well..."

User avatar
Bigdog
Team Cub Mentor
Team Cub Mentor
Posts: 24144
Joined: Sun Feb 02, 2003 12:50 pm
Zip Code: 43113
Circle of Safety: Y
Location: OH, Circleville
Contact:

Postby Bigdog » Mon Mar 29, 2004 7:05 pm

Just use the washers as spacers without a gasket on the low sides to straighten the body by tightening the screw / screws on the high side (no washers at the gap). Then remove the washers, insert the gasket and assemble the body.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.

My wife says I don't listen to her. - - - - - - - - Or something like that!

Image

http://www.cubtug.com

User avatar
Marion(57 Loboy)
10+ Years
10+ Years
Posts: 688
Joined: Sat Mar 29, 2003 4:17 pm
Zip Code: 00000
Tractors Owned: 1957 International Cub Loboy; C-3 finish mower; L-54 blade; L-F194 plow incl coulter and jointer;L-38 disk harrow. Leinbach FH back blade.
Circle of Safety: Y
Location: Canton, Ohio

Postby Marion(57 Loboy) » Mon Mar 29, 2004 7:12 pm

I had troubles like you describe with my 57 Loboy. I did this; did that...blah blah blah till I finally just went and got a brand new sediment bowl with screen (keeps the trash out) and a professionally rebuilt IH carburetor. After I got that all on and re-calibrated the governor linkage it's been a complete NON-ISSUE !
I'd say that every orifice and passageway in your carb is as gunked up as what you can see with your eyes.

User avatar
George Willer
Cub Pro
Cub Pro
Posts: 7013
Joined: Sun Feb 02, 2003 9:36 pm
Zip Code: 43420
Circle of Safety: Y
Location: OHIO, Fremont
Contact:

Postby George Willer » Mon Mar 29, 2004 7:16 pm

Daniel,

I'll take another shot at it. It requires 5 washers all the same. Four of the washers are used as spacers. The halves are assembled with the spacers between, one under each screw, and the last washer is used as a gauge when the top half is bent back in shape. It can usually be straightened enough to be serviceable, but some machine work can improve it further.

It may help to explain why they get bent in the first place. It's from over tightening the screws and compressing the gasket. It isn't spontaneous... the mechanic does it a little more each time the carburetor is assembled.

Here's the picture on the milling machine.

Image
George Willer
http://gwill.net

The most affectionate creature in the world is a wet dog. Ambrose Bierce

PAUL K. in N.H.
10+ Years
10+ Years
Posts: 694
Joined: Tue Feb 04, 2003 6:17 am
Location: NH, Ossipee

Postby PAUL K. in N.H. » Mon Mar 29, 2004 7:27 pm

Hi ALL
I was wondering what type of steel the carb is made from that they warp like they do when over tightened as George said? Paul K. in N.H.

Ron L
10+ Years
10+ Years
Posts: 661
Joined: Wed Mar 05, 2003 9:09 pm
Zip Code: 18603
Tractors Owned: 1948 Cub
1955 Cub
Location: PA, Berwick
Contact:

Postby Ron L » Mon Mar 29, 2004 7:35 pm

PAUL K. in N.H. wrote:Hi ALL
I was wondering what type of steel the carb is made from that they warp like they do when over tightened as George said? Paul K. in N.H.


Paul. They're made from aluminum, not steel...........
Ron

PAUL K. in N.H.
10+ Years
10+ Years
Posts: 694
Joined: Tue Feb 04, 2003 6:17 am
Location: NH, Ossipee

Postby PAUL K. in N.H. » Mon Mar 29, 2004 7:46 pm

THANKS Ron !!

Daniel H.
10+ Years
10+ Years
Posts: 613
Joined: Mon Feb 03, 2003 1:18 pm
Zip Code: 27055
Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
Circle of Safety: Y
Location: NC, Yadkinville

Postby Daniel H. » Mon Mar 29, 2004 7:54 pm

Thanks for the help, guys. :wink:
The four most expensive words in tractor restoration: "We might as well..."

Daniel H.
10+ Years
10+ Years
Posts: 613
Joined: Mon Feb 03, 2003 1:18 pm
Zip Code: 27055
Tractors Owned: 1951 Super A
1955 Cub Lo-boy
1955 Ferguson TO-35
Circle of Safety: Y
Location: NC, Yadkinville

Postby Daniel H. » Mon Mar 29, 2004 9:35 pm

Looks like the threads in the carb for the idle tube need cleaning up. Is that 4-40 or something else?
The four most expensive words in tractor restoration: "We might as well..."

User avatar
Bigdog
Team Cub Mentor
Team Cub Mentor
Posts: 24144
Joined: Sun Feb 02, 2003 12:50 pm
Zip Code: 43113
Circle of Safety: Y
Location: OH, Circleville
Contact:

Postby Bigdog » Mon Mar 29, 2004 9:44 pm

I think they are 4-48 threads.
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.

My wife says I don't listen to her. - - - - - - - - Or something like that!

Image

http://www.cubtug.com

User avatar
Lurker Carl
Cub Pro
Cub Pro
Posts: 3970
Joined: Mon Feb 03, 2003 9:54 am
Zip Code: 16685
Circle of Safety: Y
Location: PA, Todd

Postby Lurker Carl » Tue Mar 30, 2004 8:53 am

Daniel,

They are 4-48 and IH still has idle tubes available. If you can't find the tap locally, order one over the internet from Brownell's.

http://www.brownells.com/aspx/NS/Store/ProductDetail.aspx?p=6876&title=WIRE+GAUGE+CARBON+TAPS+%26+DIES

If the new idle tube is loose, try Loctite to hold it together. It will need at least 24 hours curing time.

Lurker Carl


Return to “Farmall Cub”

Who is online

Users browsing this forum: Arnold, Cub-Bud, dgrapes59, Leewebb7 and 28 guests