Allis B @ C hydraulics

[Nick (Wi)]

I'm considering adding an addition hydraulic cylinder under the seat of my Allis B. I understand that the Allis C in some cases have two cylinders. Question I have is when there are two cylinders, there appears to be a selector valve in the system next to the pump control lever under the seat. This control valve has a two position selector lever. How is this suppose to work? Lever facing one direction, one cylinder to have pressure and the lever the opposite direction pressure to both cylinders? Is this possible or does it work in some other manner? Thanks in advance for the info. Nick.

 

[Cletrac68]

According to my book the valve has three positions. Pressure to right,left or both cylinders.

 

[George Andreasen]

The B has a two plunger hydraulic pump, while the C had three plungers. The B pump would work but I bet it'd be awful slow trying to fill two cylinders.

 

[Dick L]

CA hydraulic pump had three pistons in the pump. There was no difference in the B and C hydraulic pumps.

 

[squezon]

I have a B that had the valve on it when i bought and I know from using it it has one input from the pump and the selector controls the pressure to one or the other ouputs but not both at the same time.

 

[Nick (Wi)]

Can a CA pump be installed in place of the B pump? It appears this would provide higher flow for faster hydraulic responses.

 

[Dick L]

To make the CA pump work you will have to use the CA's complete power takeoff assembly. The C power takeoff will not have three cams to operate the pump. If you have the bench seat it will have to be raised up or switched to a monrow type seat to make room for the top of the CA hydraulic pump.

 

[Dick L]

The power takeoff housings look like they would interchange but I have never tried to bolt a CA unit to a B/C transmission. I have the a CA out back with everything there that I was going to put on a B but have not brought it into the shop. I measured every thing to check fit but when I get around to switching I will switch transmission and all. I didnt measure the bolt location.

 

[Nick (Wi)]

Thanks Dick L for the info. I'm fooling around with a home made 3 point hitch assembly this winter and was just wondering. Speed is not an issue. Lift power is. I'm still not sure this will even work without the items on the 3 point lifting the front end. I guess I have until March to work things out. Thanks again.

 

[Anonymous-0]

just use the outlet for one ram andplum it to both rams. that is what i did on a model c. has enough lift to raise a 6ft tandem heavy duty disc quickly. then i cut the disc in half.

 

[Robert Huntress]

The hydraulic pump has an internal relief valve that recirculates much of the flow. By adding a single cylinder, the relief valve will lift later and the amount of flow will increase, while the pressure remains a constant. There should not be any serious drop in speed from adding a single cylinder. I would recommend placing the cylinders in parallel as opposed to series, though.