Finaly got my grandfathers Cub

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Lorisfarmer
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Zip Code: 29569
Tractors Owned: 1951 Farmall Cub
1969 IH Cub Cadet 106
McCormick 193 Plow
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A homemade bedder/hiller
1971 Bolens 1253-01
1999 John Deere LT155
Circle of Safety: Y
Location: Loris, South Carolina

Re: Finaly got my grandfathers Cub

Postby Lorisfarmer » Sun Nov 26, 2017 5:12 pm

Glen wrote:Hi,
The engine could still be good, and not need a rebuild, if it was in good condition when it was used before.
When you get it to turn, do a compression test on it and see what it has, then you know what the compression is.
It could have stuck valves too, they need freeing if there is any.
The rings could be stuck on the pistons, and need freeing. The guys on here recommend the oil additive that they said above. It takes some time running the engine for it to help.

If the engine hasn't been run in several years, you should prime the oil pump, they sometimes lose their prime and won't suck the oil up from the oil pan. Then there is no oil pressure when the engine is running.
Below is a picture of where the hole is that I use for priming the oil pump. Just remove the oil filter cover and oil filter, and it is easy to see, use a light if you need to.
I fill a clean oil can with motor oil, and pump it into the hole, you might need more than one filling of the oil can to fill the passages in the engine.
Watch the oil gauge after starting, it takes 15 - 20 seconds for the gauge to show pressure, it has to fill the oil filter housing before the gauge will show pressure. :)


Great advice above on priming the oil pump using the small hole inside the oil filter area. Just one caution there: after you prime it as Glen mentioned, make sure you put the filter and cap back on before starting the engine. If you don't you will be wearing about a pint of oil on your shirt and in the area where the Cub is sitting. I know, because that is what I did the first time! The oil came out very quickly and under pressure. :o
"We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm." Sir Winston Churchill / George Orwell.
1951 Farmall Cub
1969 IH Cub Cadet 106
1971 Bolens 1253-01
1998 John Deere LT 155

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Glen
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
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Location: Wa.

Re: Finaly got my grandfathers Cub

Postby Glen » Sun Nov 26, 2017 7:48 pm

Hi,
The Cubs came with an IH carburetor, up until mid 1975. Then they changed to the Zenith.
There are pics of the IH carb in the owner's manual that I posted before, on page 31 of the manual.
They have a different air cleaner hose, gas line, and choke rod than a Zenith also.
I don't know if the choke control was changed, I don't see it in your pics.

TM Tractor sells new ones that look the same as an IH carb. You can look at the pics if you don't want a new one. :)

http://www.tmtractor.com/new/fl/125fp.htm

TM Tractor also has pics of an IH carb.

http://www.tmtractor.com/tm-tractor/gfl ... or_001.htm

Lorisfarmer, you do need to put in the oil filter, and put the oil filter cover on again, so the engine will have oil pressure.
Attachments
Cub carb 3.jpg
Last edited by Glen on Tue Nov 28, 2017 11:28 pm, edited 1 time in total.

staninlowerAL
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Re: Finaly got my grandfathers Cub

Postby staninlowerAL » Sun Nov 26, 2017 9:04 pm

IH carb: check TM Tractor website. Lots of photos of Cubs, parts, & equipment.

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Glen
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
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Location: Wa.

Re: Finaly got my grandfathers Cub

Postby Glen » Mon Nov 27, 2017 2:00 am

Hi,
Here is a list of parts I thought of for putting an IH carburetor on in place of a Zenith.

Here is a listing at TM Tractor for a new gas line for use with the IH carburetor, and for use with the under axle exhaust system.

http://www.tmtractor.com/new/fl/373fp.htm

The carburetor was originally attached to the manifold with studs screwed into the carb.
Here is a listing at TM Tractor for those.

http://www.tmtractor.com/new/fl/405fp.htm

The IH carb has a choke rod, that goes on the left side of the dash, in the slot, and a loop at the top end, that matches the loop for the starter rod. I don't know if you have it or not.
You pull the rod out to close the choke, and push it fully in almost to the dash to open the choke. There are pics of it in the owner's manual.

http://www.tmtractor.com/new/fl/934fp.htm

The choke rod has to have this arm on the carb choke shaft to attach to. The last pic in the listing shows the position it usually has to go to work with the rod. The choke butterfly valve would be fully open in this position.

http://www.tmtractor.com/new/fl/522fp.htm

Here is a listing for the air cleaner pipe.

http://www.tmtractor.com/new/ae/265fp.htm

Here is the hose for it, it uses 2 pieces.

http://www.tmtractor.com/new/hc/865fp.htm

Here are clamps for the hose.

http://www.tmtractor.com/new/hc/035fp.htm

This style of clamp was the original style, they cost more.

http://www.tmtractor.com/new/hc/2187fp.htm

Below is a pic. The choke rod goes above the Touch Control rockshaft, and in this position, at the Touch Control tubes.
Attachments
Cub.jpg

Gary Dotson
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Re: Finaly got my grandfathers Cub

Postby Gary Dotson » Mon Nov 27, 2017 8:03 am

The Zenith carb. has a larger mounting flange, than the IH carb. and looks odd on an early manifold but is a correct IH replacement. Later manifolds had a larger flange. The mounting holes are the same, though.

Command52
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Re: Finaly got my grandfathers Cub

Postby Command52 » Tue Nov 28, 2017 8:25 am

Are the original carbs usually able to be rebuilt or does the shaft holes ware like a lot of the other carbs do.

Gary Dotson
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Posts: 2951
Joined: Thu Aug 03, 2006 6:20 am
Zip Code: 43358
Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
Circle of Safety: Y
Location: OH West Mansfield

Re: Finaly got my grandfathers Cub

Postby Gary Dotson » Tue Nov 28, 2017 8:52 am

We seldom see much throttle shaft bore wear on Cub carb. It should rebuild with no problem.

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64/67lo-boy
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Re: Finaly got my grandfathers Cub

Postby 64/67lo-boy » Tue Nov 28, 2017 7:27 pm

Command52 stick with the Zenith carb. Its a better carburator and would be a correct factory upgrade. Dont waist your time and money on the after market IH carb. After market carbs wont have the IH symbole on the fuel bowl of the carb so it wont be correct for the year unless you get a used one. Unless you can find a new old stock Carb. IH went with the Zeinth to gain a few more horse power. Besides its what your grand father had on it. Do you want to restore it to original or to the way it was when your grandad used it?
Pete from Virginia Beach


man comes into the world cold naked wet and starving, and after that things get worse. "Gun Smoke"

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Karl Bader
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Re: Finaly got my grandfathers Cub

Postby Karl Bader » Mon Dec 04, 2017 8:53 am

Drfting1 wrote:Just a heads up the motor, I thought mine needed rebuild, was about ready to order all the parts, low compression in all cylinders 70-88... Read somewhere on this forum about treating with seafoam, so the whole time I was restoring mine, I kept pouring a little in each cylinder via spark plug hole and maybe a half turn every few days... By time I was done I was surprised how clean valves looked... Guessing it also freed up everything, when done I had compression of about 100-105... Used her the summer and gave another oil change.. Compression now 118-119 dry


Which seafoam product did you use?

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Drfting1
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Re: Finaly got my grandfathers Cub

Postby Drfting1 » Mon Dec 04, 2017 11:34 am

This is the one I used, first time I ever used it, was pretty impressed
Attachments
14460874.jpeg

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Karl Bader
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Tractors Owned: 1947 Farmall cub
1952 Farmall cub (some assembly required)
Location: Walnutport, PA

Re: Finaly got my grandfathers Cub

Postby Karl Bader » Mon Dec 04, 2017 12:16 pm

I will have to try it


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