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Discussion Forum

3 point hitch backblade

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jim-p

07-02-2000 02:31:04

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i have a 1950 8n, when i use my backblade and lower it to use it to spread stone or dirt it
floats up when there is a hight spot.is there anyway to keep down when i lower it, i make sure the lever is always down when i lower the blade
or is it the way it works. jim

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homeboy

07-02-2000 05:34:05

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Re: 3 point hitch backblade in reply to jim-p, 07-02-2000 02:31:04

Jim; You have a pitch control that you can adjust from the seat Top link should be set to help it dig in.Sincerly homeboy

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Salmoneye

07-02-2000 03:31:27

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Re: 3 point hitch backblade in reply to jim-p, 07-02-2000 02:31:04

I could be wrong, but it sounds like you have the Position/Draft Lever in the 'Draft' position. It is the little lever on the right UNDER the seat. Make sure that when you are back-blading this little lever is in the 'up' or vertical position. If you have it 'down' or horizontal the hydraulics are in the Draft mode and the blade will act as you described. The Draft mode was the original Fergusson design that allowed a plough depth to be set and maintained uniformly over varying terrain.

Paul II, In Vermont

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JRH_9N

07-02-2000 17:10:00

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Re: Re: 3 point hitch backblade in reply to Salmoneye, 07-02-2000 03:31:27

I think Paul has it nailed... I think he's right on here.

Draft control responds to horizontal drag forces on the implement, not vertical height position. The control works so that when the horizontal drag force increases, it raises the implement (inferring that the plow has dropped and is in too deep), and when the horizontal drag force decreases, it drops the implement (assuming the plow depth is reduced and needs to be dropped). Its all based upon horizontal drag forces sensed along that big spring connected to the top link. Increasing horizontal drag compresses the spring (the implement pivots around the lower arm pin points).

Actually, I don't see anything wrong with his idea to just put the control all the way down.... this will keep it on the ground over uneven terain. ...as long as you are leveling side to side, not seeking to level uneven rolling terain front to back.

Make any sense.. or am I just rambling....

Jim

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