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Model B Hydraulics

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Steve M

09-19-1999 10:05:03

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I have a model B and I recently added a 3pt hitch. The hitch currently lowers due to gravity, so the implements will raise up instead of digging in. I was told I could get a two-way or three-way valve so I can apply pressure when lowering the implements. Is this true? If so, what is it actually called and where would be the best place to obtain one?

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Greg

02-02-2000 19:12:55

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Re: Model B Hydraulics in reply to Steve M, 09-19-1999 10:05:03

Don't go and break your old tractor, Steve!

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Dick L in NW Ohio

09-20-1999 10:46:37

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Re: Model B Hydraulics in reply to Steve M, 09-19-1999 10:05:03

For plowing, you would not need down pressure if your equipment is adjusted properly and the points are not wore out. Down pressure on a disk would take traction away from your tractor and without a lot of wheel weights the B will not have a lot of traction to spare. You may need to weight your disk but you will have to add weight to the front of the tractor to lift the disk. My 961 Ford, 1650 Oliver, and 1850 Oliver don't have down pressure on the 3pt.

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Rick Hester

09-20-1999 06:53:40

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Re: Model B Hydraulics in reply to Steve M, 09-19-1999 10:05:03

Steve,

I think that you are going to get into a lot of complex problems trying to do what you are talking about. I recently put a Worksaver 3-point hitch on my Model B that only has a one-way valve like yours.

The problem that I see is that you are going to have to put a hydraulic ram on the lift that can exert pressure in two directions. The rams used on the hitch is a high pressure ram that doesn't use as much fluid as the newer low pressure rams. I don't know if you can still get the high pressure rams that will work in both directions. Also the Model B has such a small amount of fluid available for hydraulic use, I doubt that you can use one of the large capacity, double acting rams without draining the hydraulic reserve.

Perhaps what you want to do is possible, but I would be very wary of asking so much of a 40 - 50 year old tractor.

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greg reuter

09-19-1999 18:43:17

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Re: Model B Hydraulics in reply to Steve M, 09-19-1999 10:05:03

It sounds like you want a 4-way valve.
The valve has a port for the pump, two more
for the cylindar, and another for return. You
would probably have to rig the b's pump in
the lift position. Also, the return line
would go back to the transmission.
Central Tractor and Northern Hydraulics
have valves.

What kind of work do you do with a b that
requires down pressure?

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Steve M

09-19-1999 22:12:52

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Re: Re: Model B Hydraulics in reply to greg reuter, 09-19-1999 18:43:17

Thanks Greg. I've just got a plow, disk, and soon some coultivators. It seems like it would work better with down pressure instead of adding weight.

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greg reuter

09-20-1999 19:42:38

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Re: Re: Re: Model B Hydraulics in reply to Steve M, 09-19-1999 22:12:52

If the plow doesn't "suck" itself into the
ground, either the plow share is worn or the
3-pt top link is too long. You probably
don't need down pressure. Best wishes on
whatever you decide.

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