Farmall C or Super A Hydraulic Pump Rebuild

Anonymous-0 · Jan 3, 2011

I have a tractor that was made up of a Farmall A & and Farmall C tractor to create a Farmall Super A. I am sure this has been commonly done before to allow someone to have a "Super A" with hydraulics. The hydraulics work when fluid is poured into the resivior, but I have noticed that the next time I go out to it, the fluid is gone. I am thinking that its getting into the engine crankcase somehow, as I drained the engine oil and almost 2 gallons of oil came out. Also, there is a SMALL drip on the hydraulic lines where the flange bolts to the pump. Not a drip from the flange, but where the line connects to the flange. Not a bad drip, and I can't see any bad places on the line.

What all do I need to do to fix the problem?? Hydraulic Pump Rebuild?, or simple Gaskets & O-Rings?? THANKS FOR ALL THE HELP.

Mr. Mayor · Jan 3, 2011

IH sells a kit which is seals and o-rings. It"s not cheap if I recall. I"ve done three of those pumps, there is nothing to it and the kit comes with instructions.. The lines are brazed to the flanges. You probably have a crack where it leaks.

Anonymous-0 · Jan 3, 2011

Are all of the pumps going to be the same since this tractor has been "put together"?? From my expierences with gaskets and seals and o-rings; you could probably get them at Napa or something of the like. If the parts are the same, and someone has a good part number THAT WILL CROSS, I'd appreciate them. Also, if anyone has suggestions or a "how-to" guide, that would be great! (like they have on the FarmallCub.com site for Cubs)

THANKS AGAIN

Ron-MO · Jan 3, 2011

Likely leaking at the oring or seal where pump attaches to engine. I would remove the pump, then find out what you need. My C had a oring leaking (old and worn). I had a hard time locating an oring that was correct size. It seemed to be an odd ball size, but finally located at an older dealer. He had to go through some serious checking to figure out correct part number. Maybe you will be lucky, and it will be the common seal that is easy to get. They used two different pumps....I believe Pesco, and Thompson if memory serves correctly. Cannot recall which I had. The good news is that it lasted 60 years so I doubt I will have to do it again

Anonymous-0 · Jan 3, 2011

How can I identify which pump I have since 2 differnt ones were made?

I have a spare pump already off a tractor sitting outside on the work table. It looks JUST LIKE the one on the tractor.

Were the 2 different pumps visually Alike?? If I use the numbers for the pump that is already removed, will that get me the correct part, or is it possbile that they're differnt although look alike.

redFarmallboy · Jan 3, 2011

Does this look like what you have? I agree with some of the other posts. The seal on the pump is known for going bad and allowing hydro oil to leak into the motor. I would pull the pump and replace the seal and maybe use a thicker oil in the hydraulics. (I have a little bit different pump on my A as you can see because it is belt driven and sits up under the hood. (I also have a C so I know about the pump leaking into the motor).[/img]

redFarmallboy · Jan 3, 2011

El Toro · Jan 3, 2011

Here's a part's list for the Pesco pump. Item No.4 usually will wear a groove on item No.11 when the seal get's hard from age. This will allow hydraulic oil into the engine. You also may need a speedi-sleeve to cover that surface and a new seal. Napa should have the kit and Case/IH probably have them. Hal

Anonymous-0 · Jan 3, 2011

Thanks EL Toro, you wouldn't happen to know how I could find the part through NAPA without one of their numbers? You think the IH Number on the sheet you listed would suffice?

Also, as far as the O-Rings & Gaskets; I found those on www.external_link. They didn't have the seals though.

El Toro · Jan 3, 2011

Inspect those items I mentioned and take them along with you. Get the make of the pump since I think they used several from different companies. Hal
PS: You can print a copy and take it along.

Anonymous-0 · Jan 3, 2011

I am unsure as to how to identify the make of the pump. Does it have the name plainly stamped onto the pump itself; or is it by identification?? Yes, I will actually print the page and take it.

THANKS

El Toro · Jan 3, 2011

They should be able to give you the correct speedi-sleeve. Take No 11 along and it should be a snug fit over the worn surface. They may have the seal too, I think it's an o-ring. Be sure to have a clean area during reassembly of the pump. Hal

Mr. Mayor · Jan 3, 2011

Virtually all of the pumps used on the C, SC, SA, Cub were Pesco brand. The model number will be stamped on the pump body. The model will have a suffix number, -01, -02 etc. The kits come with parts for all of the suffix versions for any given model and also detailed rebuild instructions as to the correct seals and washers to use.

riverbend · Jan 4, 2011

I found a Cessna pump (#20243-0AAA) on my Super C. It was from a later model. It looked identical to the Pesco pumps. The partsman at our local IH dealer was able to identify it. He could not get parts. They came from Spencer Industries in Kent Washington.

Greg

gene bender · Jan 4, 2011

Depending on the pump there would either be an O-RING or a seal. You wont know till the pump is removed and if the shaft is worn in the seal area you need a speedy sleeve as now your fluid is going into the crankcase. If you chack the oil you will probably find it over full. If its an o-ring you will need to enlarge the hole on the housing to allow for the speedy sleeve. If its a seal the sleeve will work without enlarging the hole if did a bunch of them.

Anonymous-0 · Jan 4, 2011

Gene,

Do all of the pumps have the o-rings for the manifold; as well as either an Oil Seal OR O-Ring (depending on brand) for where it mounts to engine? Is that what you are saying??

How would you enlarge the hole on the pump to accomodate the speedy sleeve if need be??

gene bender · Jan 4, 2011

The input shaft on the pump can have two types of seals one has an o-ring the other type has a seal. If the housing wont clear the shaft after the speedy seal a letterd drill will enlarge but you want to mike the od before drilling. A machine shop should be able to do it. Just make sure the washer gets bent when replacing the gear so it wont come loose and wear out the hole in the gear. There are o-rings where the manifold bolts to the pump.

Anonymous-0 · Jan 4, 2011

Thanks again Gene! Sounds like if I need a speedy sleeve, that a machine shop will be the best bet to enlarge the hole (if needed). The rest I am assuming I can do.

gene bender · Jan 4, 2011

Correct you mite want to clean the filter in the rockshaft area when the fluid id drained as you loosen the pipes going to the pump there will be some fluid run out. You will then need to remove the other end at the rockshaft so you can remove the pump. There will be more drainage when you remove tehpipes from the rockshaft. When installing before you put the pipe assy back fill the pump with oil helps to prime them when starting usually no problems. Some pumps do have a set screw in the pump that can also be used for priming. After its all back together start engine and move the levers back and forth to remove any air in the system.

Idaho Ron · Jan 4, 2011

The pump on my SC is a Wooster. I took mine into IH to identify since the pictures didn’t look right. Ron

Farmall C or Super A Hydraulic Pump Rebuild

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