No lift after rebuild Farmall Super A

Farmall Super A, AV, 100, 130, & 140 1939 - 1973
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Logov76
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No lift after rebuild Farmall Super A

Postby Logov76 » Wed May 12, 2021 10:19 pm

Hello I am new here I was looking for some advice I just rebuilt the touch control and pump on my farmall super a. After solving a no spark issue I cannot get hydraulic pump to prime I would check pressure on manifold but I cannot get the check plugs lose. I am pretty certain that I put all the valve of back correctly on touch control and the pump was working before resealing it any advice would be appreciated

Thanks

tst
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Re: No lift after rebuild Farmall Super A

Postby tst » Thu May 13, 2021 12:01 am

try putting oil in the lines so the pump is not dry

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Thu May 13, 2021 12:04 am

I should clarify I primed pump before installing and filled reservoir with a nipple in the fill hole and funnel to get oil in the lines so I know for a fact there is oil to the pump is there some kind of bleeder screw than I can take loose on the pump or do I need to get the check plugs out on the manifold?

tst
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Re: No lift after rebuild Farmall Super A

Postby tst » Thu May 13, 2021 8:23 am

if it has oil and does not work I would put a gauge in the line to see if the pump makes pressure, no or low pressure pump issue, good pressure touch control issue

Jim Becker
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Re: No lift after rebuild Farmall Super A

Postby Jim Becker » Thu May 13, 2021 10:33 am

I know there were multiple pumps used on the Super A. So I'm not sure how much of the following will apply in your specific case. However, there are mistakes that can be made in assembling a pump that will give you this problem.

Take a look at this post (and the surrounding thread).
viewtopic.php?f=1&t=99324&p=783261&#p783288

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Mon May 17, 2021 11:35 am

So I put a gauge on and I have fluid movement but no pressure

Jim Becker
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Re: No lift after rebuild Farmall Super A

Postby Jim Becker » Mon May 17, 2021 11:37 am

Check the orifice and orifice screen for trash. You can access it through the pipe plug in the head.

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Wed May 19, 2021 2:39 pm

So after messing with it I tried using a hydraulic power pack that I have and pumped directly in pressure port and it is dumping straight to the reservoir. I will pull apart soon but is there any valve that may cause this? The only other thing I know is the two bleeder style plugs in the bottom I had one fall out as I was removing the cover so I had a total of three the two in the bottom were still in place I assumed whoever was there last lost that loose one in the reservoir

Any more suggestions?

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Wed May 19, 2021 9:41 pm

Does anyone have the service manual for touch control?

Jim Becker
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Re: No lift after rebuild Farmall Super A

Postby Jim Becker » Thu May 20, 2021 12:00 am

It is in the PDF manuals. Use the quick links at the top left of this page. Then go to: "Service Manuals" then to "Blue Ribbon Service Manuals".

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Thu May 20, 2021 4:05 am

Thank I scrolled right by it

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Logov76
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Re: No lift after rebuild Farmall Super A

Postby Logov76 » Sat May 22, 2021 9:06 pm

Update tractor is working I removed lift box and checked with air and found I had control valve sticking for front lift but was not my no lift issue. After referencing hydraulic pump manual found that spring plate behind pump bearings was stuck and after cleaning and reassembly works great thanks for all the help


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