FEL moves too quickly: Loaders  -- Tractor Attachments Implements 3ph Discussion Forum and Review FEL moves too quickly: Loaders -- Tractor Attachments Implements 3ph Discussion Forum

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 07-28-2001, 02:06 Post: 30461
greg



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 FEL moves too quickly

I understand that the FEL for my 2001 year, Cub 7205 works on an 11 to 20 hp tractor. This cub is a 20 horse. The fel is very very sensative, it moves too fast, jerky like, if the throttle is up to 2500 apx. it is much better at 1900 rpm. Anyhow how can this jerkiness or quickness be slowed down? Thank, Greg in Oregon






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 07-28-2001, 10:00 Post: 30464
kay



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 FEL moves too quickly

Get rid of it by regulating the flow of oil in the hydraulic line(s), whichever are the problem. Usually can do this by putting in a plug (flat washer-type plate) with a small hole in it, at the quick connector. The size of the hole is small (1/32"+ or -), and the size will have to be experimented with to get the movement speed you want. Sounds like you went to a higher HP tractor, and now have more gpm and psi than what the loader cylinders were set up for. I may have guessed wrong - it happens. Hope this helps.






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 07-29-2001, 00:51 Post: 30479
Roger L.



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 FEL moves too quickly

What kay suggests is the traditional fix for to much fluid velocity. You force it to go through a small orfice and that slows it down. It works just like turning down the faucet on the kitchen sink.....except that the washer he suggests stays in the system permanently.
But from your message it sounds as though you can also solve the problem by running the motor at a slower speed. So why not just do it that way? On my own machines, I may rev them up to get the loader to move faster, but I rarely use the loader for any length of time while the motor is reved for some other purpose. In fact, most of my loader work is done just off idle. Why not just let off on the throttle to cure the jerky loader syndrome?






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 08-01-2001, 06:37 Post: 30550
TomG

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 FEL moves too quickly

I do most of my loader work around 1500 rpm. I figure there's no reason to run at PTO speed, and a lot of forward/backward work is probably easier on my clutch at lower rpmís. I might run even lower rpmís, but much lower than 1500 and the engine may cool below operating temperature. I believe flow restricting washers work. I would think through installing one in the inlet line of a loader SCV in an open centered system. In many common hookups, the restriction would be there all the time and would affect the 3ph as well. Such a restriction may heat the oil somewhat.






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 08-03-2001, 10:11 Post: 30615
Eddie Suckow



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 FEL moves too quickly

My 7205 FEL is pretty fast too. At the higher rpm's (which is required if I have 600lbs hanging off it!) I usually use two hands on the stick to barely lower it or roll it etc... I can drop it as slow as 1" per two second or so I guess? maybe you have some air in the hyrdo lines?






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 08-04-2001, 07:34 Post: 30632
TomG

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 FEL moves too quickly

Eddie describes 'feathering,' which is a good skill to develop for hydraulics but not clutches--donít feather a clutch. A little experience also develops the skills to use a loader's speed and also reduces the need for feathering. Eventually the knack of putting the bucket in the right place develops, and then thereís less need to make fine adjustments. Tractor size, hydraulic pump capacity and loader design go together and are matched in proper installations to produce speed and power that are appropriate for the tractor and operator. However, a loader that is small for the tractor may be driven too fast by a larger pump than was intended for the loader. Such a setup would be a waste, because a small loader would limit a tractor that would be capable of lifting heavier loads. Larger diameter cylinders would provide more power and slow down a loader, but the loader frame probably wouldn't support heavier loads. Cylinders and frames go together too. A bit of air can get into lines from time to time. Cycling the cylinders ordinarily expels any air. Cycling is simply moving a cylinder to the limit of it's travel in one direction and holding the control valve open for a few seconds and then repeating the process in the other direction.






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Discussion Boards > Active Subjects > Messages as Posted > Loaders Forum

Thread 30461 Filter by Poster:
Eddie Suckow 1 | greg 1 | kay 1 | Roger L. 1 | TomG 2 |




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