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Farmall & IHC Tractors Discussion Forum
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1964 IH 806 hydraulics

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Ralph Kratz

08-15-2007 10:42:37




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My 1964 model 806 had a failure in the 3-point and remote hydraulics that occured when I hit a rock while mowing. I've got zero hydraulic pressure in those systems and the main hydraulic oil reservoir is full. Anyone know if there is a check valve or pressure relief valve that may have tripped? or is there a second reservoir that I can't find? Or any other suggestions? I pulled the secondary hydraulic pump and it seems to be moving fluid and the drive turns when I crank over the motor. Any help is appreciated.
Ralph

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Weldon K

08-15-2007 19:09:18




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 Re: 1964 IH 806 hydraulics in reply to Ralph Kratz, 08-15-2007 10:42:37  
Did the PTO still turn ( operate properly) after hitting the rock ? If it stopped operating at the time of hitting the rock and will not operate now, the splines of the PTO drive gear which mesh into the splined hub on the clutch pressure plate have stripped due to being worn . The hydraulic lift and remote valves are supplied by a pump driven from the PTO drive shaft which is driven of the afore mentioned PTO drive gear. If the splines have stripped out, no PTO and hydraulic functions.
Repair requires tractor split, new PTO drive gear ( with new oil seals) and hub replacement on pressure plate. May as will do a full clutch job while you are there.

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Ralph Kratz

08-16-2007 00:31:38




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 Re: 1964 IH 806 hydraulics in reply to Weldon K, 08-15-2007 19:09:18  
weldon, thanks for the reply. The PTO still operates fine.



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ChrisAS

08-15-2007 13:55:07




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 Re: 1964 IH 806 hydraulics in reply to Ralph Kratz, 08-15-2007 10:42:37  
Ralhp. There is just the one reservoir and that is the whole transmision. I don't think hitting some thing and any thing to do with the hydraulics. There is a relief valve in the right hand seat suport that could have went bad, all you can do is replace it with a new one (no repair to it). If not that I would say the pump.



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