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3ph lift

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Bill

09-27-1999 17:41:41




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I have an 8n and recently picked up a 16" single bottom plow. My problem is that the tractor does not lift it up high enough. As far as I know the 3ph is lifting all the way. The plow did not come with a connector for the third point and I am using an adjustable screw type rod that came with the tractor. Can anyone tell me if that is the wrong part or do I have a problem with the lift? Thanks




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David (La)

09-28-1999 12:14:15




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 Re: 3ph lift in reply to Bill, 09-27-1999 17:41:41  
You can adjust some on the lift limit. Take the side plate off on the right side, the one with the dipstick. With the tractor off, and the position control lever in the full up position, reach in and find the lift rocker lever and make sure that the intake valve is completely open, that is the lever should be up against the pump body. Work the position control lever while you hold the rocker and you can tell if it stops at the body. If it needs adjustment and all internal adjustments are close, you can loosen the four bolts on the side of the control lever quadrant just enough to allow you to slide the quadrant forward or backward. I believe forward will move the rocker closer to the pump body, but you can feel it also.

You can also watch the lift while running and with the lever in the full up position move the quadrant and watch the lift change. You can do this without opening the side cover. If this want get it done then you may need to go into the lift cover and make the necessary adjustments according to the FO-4 manual. This is where you will find the pin and the cam, the pin wears alot with no lube of any kind unless you turn the tractor over.

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ZANE

09-27-1999 18:07:10




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 Re: 3ph lift in reply to Bill, 09-27-1999 17:41:41  
Now is definately the time to replace the cam follower pin. That much wear does make a lot of difference in how the lift works and when it starts to lift according to where the lift control is positioned.
I would defininately obain the correct part to replace it with.Don't go with a cut off bolt etc. as it will wear down too quick.If you are going to consider using a bolt etc you may as well leave the old pin in place because with it worn half way into it out last a bolt etc.
I shouldn't tell you this ,but I have used and ole valve stem by grinding off a piece of proper length.The repalcement is a hardened pin and it has to be hard to prevent rapid wear.Their is no lubrication to the pin. If you foolishly decide to use a valve stem it should be measured with a micrometer to assure the right diameter.If it is a couple of thousands too smalll it may fall out and if it is too large you will ruin the hole it goes in,then the right pin will fall out. Be sure and support the linkage as close to the pin hole as possible while driving the pin in or out.You can do this by holding a long heavy flat ended bar by the pin as it is driven out with a punch of correct diameter. Usually takes two people to do it. One to hammer and one to cuss. Added on Date: 05:50:33 2/14/99

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Jerry

09-27-1999 18:52:43




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 Re: Re: 3ph lift in reply to ZANE, 09-27-1999 18:07:10  
Watch out messing with those valve stems. Some are sodium filled and will explode. Not a nice scene.



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ZANE

09-28-1999 14:05:15




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 Re: Re: Re: 3ph lift in reply to Jerry, 09-27-1999 18:52:43  
I have been a mechanic since I was 16 years old and am now 64 and the only valves I have ever seen that have sodium in them were on the 18 and 28 cylinder engines on the B29 and B50 bomber that I was an engine mechinic on in the mid to late 50s. I want to know what it would make one explode? I have seen them break off at the head of the valve and be bashed around in the cylinder of one of those radial engines till the cylinder came off the engine and one never exploded.

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2Nken (ga)

09-28-1999 19:13:16




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 Re: Re: Re: Re: 3ph lift in reply to ZANE, 09-28-1999 14:05:15  
Zane, I too have been a mechanic since I was an adolescent, but tractors are a new interest for me. For a while, my living was procured by working on Mercedes automobiles. This particular company, and some other performance cars, use the sodium filled valves for heat transfer. This works fine until the sodium is exposed to air or water which causes a violent reaction (explosion). The sodium must be contained or stored in oil for safety. Speaking of which, where is Dell these days?

Tractor On!

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bg

09-27-1999 20:54:47




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 Re: Re: Re: 3ph lift in reply to Jerry, 09-27-1999 18:52:43  
I'd be more inclined to use an old drill bit of the correct diameter, if I couldn't find a new pin.



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