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MF 135 Hydraulics question(s)

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Tom_NC

11-15-2002 21:34:33




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I have a MF 135 Deluxe that my Grandfather bought used. It is the four cylinder gas version. It has been equipped with a Dunham Lehr front end loader that is detachable. When they rigged it for the loader the original plate under the seat that had a high pressure port on it was removed and replaced by a plate with a cutoff on it. You open it and put the position control lever in the constant pumping position to use the lift. The 3pt. lift will not hold it's position when this valve is opened with the loader attached. I really have two questions the first being. Is there a way to make the 3pt lift hold a load in position when using the loader? I could change the plate if needed. The second is, I am thinking about buying a Grizzly 3pt backhoe and am not sure if the 135 will have enough pressure/flow to work it properly. Any and all help here would be greatly appreciated.
Tom

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Gary in TX

11-16-2002 22:34:29




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 Re: MF 135 Hydraulics question(s) in reply to Tom_NC, 11-15-2002 21:34:33  
Hey Tom
The front mount pump for the loader would be better but I just wanted to drop you a quick tip on using the cut off valve under your seat. I have a 1970 model 135 gas with the 4 cyl. cont. engine with the same set up. I use mine to run a hyd. rake hitch and a haybine. I don't use mine in constant pumping though. I just drop my lift arms before putting the cut off in position to use my valve on the fender and then raise the 3pt lever all the way up but not into the constant pumping range. This gives me the power to operate what I need too. You might try that on yours to see if it would still operate. I don't like the idea of the pump being in constant pumping mode for some reason. Anyhow you might give it a shot, couldn't hurt!
Gary

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Bob in CA

11-16-2002 19:31:41




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 Re: MF 135 Hydraulics question(s) in reply to Tom_NC, 11-15-2002 21:34:33  
I don't know about the grizzly backhoe but I think that your best bet is to add a separate hydraulic pump driven from the front of the crankshaft. The internal pump might work but I think that the volume would be a bit low. Even if you don't put the hoe on the back, I would put the extra pump on the front for the loader which will leave your tractor hyd system for your rear attachments.
Bob

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