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lift won't go down

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Ken C.

02-19-2005 20:47:35

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Got my CA running and was gonna do a little plowing today and the lift won't let down. Had cultivators on front tail plows on back, and i left the lift up when i last used it, but it does not go down. Anybody know where i need to look first.Thnaks, Ken.

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02-20-2005 06:32:31

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 Re: lift won't go down in reply to Ken C., 02-19-2005 20:47:35  
Dave prety much covered you possibilities. I would like to suggest, first check the control lever lock screw. It may have been tampered with. Then open the control valve adjusting screw and tap on the valve assembley housing assembley( might be a speck of dirt or rust)perhaps the position hold valve ball is stuck in its seat. I have seen this a few times in situations like yours. BE CAREFUL, when doing this that you are not where the implement cannot catch you. If this is the problem it will drop when you do this, would suggest a bloc somehow to keep it from coming all the way down.

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dave of southwest michiga

02-20-2005 03:55:14

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 Re: lift won't go down in reply to Ken C., 02-19-2005 20:47:35  
Hi Ken,
You must live somewhere down in the south if you were going out plowing yesterday! Here in Michigan, along the Lake Michigan shoreline, my wife and I can only "think" about getting out and working the ground.

I don't have my tractor manual here in front of me (it's out in the shed with the little C), but I'd like to offer a couple of suggestions: It sounds like you're not returning fluid back to the tractor from the lift cylinder. I'm thinking that your hydraulics are not allowing the fluid to "reverse" and flow back into the transmission. (Here's where I need my manual because on my little C, it's a one-way cylinder; pressure raises the lift, and when you push the control handle down, the hydraulic valve goes to "return", and the weight of the lift forces fluid back into the tractor; I don't know if the CA is like this or whether it's two-way, but in any event, it sounds like you're "pressurizing" the lift. Does your control handle move the valve completely? You could have a "stuck" valve that is only allowing pressure but no return. One suggestion, rather messy, might be to shut the tractor off, crack the line to the cylinder to allow fluid to bleed out and retract the cylinder, tighten the line, make sure the handle is in the "down" position, start the tractor and see if it pops right back up again. That would verify the hydraulic valve is always putting out pressure.

The other suggestion is to make sure that the ram isn't bent in some manner and binding up the cylinder. It wouldn't take much. I guess I'm saying make sure your mechanicals are not bound in some way.

Wish I had my manual here to offer some other advice, but I'm sure someone with more knowledge than me has some other thoughts.

Good luck.

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Ken C.

02-20-2005 13:58:51

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 Re: lift won't go down in reply to dave of southwest michiga, 02-20-2005 03:55:14  
Yes, I'm in Louisiana and was planting potatoes yesterday. Temp was about 71 degrees yesterday and humidity around 80 percent so it was muggy about normal here, sometime wish i lived up your way so we could get some snow, never get any, just a lot of humidity. Thanks for your advice, i will try it, Ken.

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mark olson

02-24-2005 08:51:39

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 Re: lift won't go down in reply to Ken C., 02-20-2005 13:58:51  
Ken: I was going to suggest that water in the fluid
causing ice . but not in your weather. My CA will
sometme stick in the valve body. Before you atemt
to remove ball and spring you need to remove implement some how , or block so that it can't not come crashing down. This is done by removing the rear of the valve caseing. Usauly cleaning and replaceing does the job.

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