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1979 Cub Hydraulic Pump will lift.

A

Anonymous-0

Well-known Member
There was a post yesterday (8-14-13)related to basically the same problem I am having with a 79 IH Cub.

The tractor sat for almost 10 years and just got it running. The lift was not working, I just simply kept moving the lever back and forth every time I started it and all of a sudden it worked for a few times. Now it has stopped working again, as it was before.

Based on the advice you gave to the other poster, this is what has taken place;

- made sure fluid is a proper lever, used Hy-tran.

- the tractor is all original, so not connections are missing or loose.

- took off allen wrench plug to make sure oil drained and pumping while engine is on.

- when moving lever to the front there is not load on the engine, when moving back there is a very, very minor load. you have to listen carefully to even notice it.

Question - What other advice can you provide. Thank you in advance for you assistance. David
 
I can give you an experiance I had with mine when it quit working. When I would move the touch control the hydraulic lift would move for a second and then nothing. I rebuilt the touch control unit and had the same thing. I put a new pump on and had the same result. Finally I pulled the front of the engine off and found that the cam gear had moved just enough that it was not engaging the hyd. pump. I put the gear back in place with a little tack weld to keep it from moving. Has worked fine for years.
 
I just posted the above post yesterday and forgot to include one important observation.

I took off both allen wrench plugs that go from the hydraulic to the TC. When starting the tractor, from the top plug oil gushes out with no air or problem (shoots it out about a foot); however, on the bottom allen plug, oil comes out but at a very slow rate, no gushing.

Question - Is this normal or is there something interfering with the flow???

Thanks again. David
 
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