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66-77-88

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Will

10-02-2001 11:07:03




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Did all of the 66-77-88 Oliver's use an electric
Hyd system. I have been told that they were not a good system. Is there any upgrade or can an old electric hydraulic system be economically rebuilt?
I spent many hours on a 77 mowing pastures as a kid and would like to get one again, but I need hydraulics.




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Mike M (WA)

10-03-2001 08:54:22




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 Re: 66-77-88 in reply to Will, 10-02-2001 11:07:03  
I had a 1550 with the hydra-lectric system for many years- the electric part was completely inoperative- I think it was a draft control mechanism that required special Oliver implement cylinders, and used feedback from solenoids on the implement cylinder to electrically cause the hydraulics to move the implement up or down (ie, draft control). The point is, the hydraulic system worked just fine without all that stuff- you just didn't have draft control. If the tractor has levers that manually control the hyraulics, don't worry about the electric part.

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Jerry B

10-03-2001 06:16:07




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 Re: 66-77-88 in reply to Will, 10-02-2001 11:07:03  
My father was an Oliver mechanic for many years. I asked him about the Hyda-electric system and was it any good. He told me the problem was with the operator not the system.

As with any thing mechanical, there is a proper way and an improper way to operate it. Dad told me that most problems developed because the operator would not use one lever to set the range of motion and the other to simpley operate the hydraulics. No one with a tractor with modern hydraulics would use both levers to raise and lower the implement, but that is precisely what the early operators did: use both lever simultaniously. Problems were bound to develope.

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Lee

10-05-2001 20:53:38




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 Re: Re: 66-77-88 in reply to Jerry B, 10-03-2001 06:16:07  
The purpose of the Hydra electric was to move the cylinder stop on the remote cylinder from the tractor seat on the later cylinders there was a magnet on the end of the cylinder that was activated when you pushed in on the button on the remote lever. That way you could change the depth of the cylinder without leaving the tractor seat.It did require a Oliver cylinder, but the tractor will work with a standard cylinder.

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