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Harry Ferguson Tractors Discussion Forum
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Re: Well no wonder my lift leaked down....

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John(UK)

09-23-2012 06:44:42
79.76.245.5



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The correct gap for the rings when closed is between .0025" - .0075". It is always a good thing to have some oil leaking here at the Piston as it does supply some lubrication up to the Top Cover and the internal linkage. If you are experiencing leak down on the 3 point, then usually it is the Check Valve that is the problem. As long as you don't have a steady stream of oil from the Piston, the Pump will be able to easily cope with this leakage. It was never intended that it was completely sealed....John(UK)....fergusontractors@hotmail.com

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Jason S.

09-23-2012 11:36:34
174.228.68.171



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 Re: Well no wonder my lift leaked down.... in reply to John(UK), 09-23-2012 06:44:42  
It had a steady stream about 1/8 of an inch coming down from the lift cylinder. I thought that was odd considering it was new rings and the cylinder was in spec. I have since replaced it with the hybrid piston setup with a used set of rings from a TO30. The end gap on the new rings was .013 the same cylinder with the used TO30 rings was .007. I just wanted to share my findings. Although I did finally solve my problem on why I never had much of an adjustment on the quadrant. The shaf was too worn. I had to weld it up and turn it back down. Now it is much better.

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John(UK)

09-25-2012 06:21:14
79.76.250.174



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 Re: Well no wonder my lift leaked down.... in reply to Jason S., 09-23-2012 11:36:34  
You remember me saying last time that it was useful to have some oil leaking and spraying around in the Top Cover, well the Quadrant Lever and shaft is one of the points that it lubricates. The oil hole for this is on the top of the tube that the Lever Shaft passes through to the inside, you should make sure that this is clear at all times. Can you tell me just how badly this Lever Shaft and Tube was worn as this has come up before but no-one has ever given me an answer...John(UK) fergusontractors@hotmail.com

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Jason S.

09-26-2012 10:45:49
174.252.151.145



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 Re: Well no wonder my lift leaked down.... in reply to John(UK), 09-25-2012 06:21:14  
My control fork had .039" wear in it. The shaft had .090 wear.
I replaced the fork with one I had from a TO30....and then I welded the control rod up and turned it back down.



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