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Farmall & IHC Tractors Discussion Forum
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Farmall 706 Hydraulics

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Dave NM

04-21-2008 12:59:42




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A friend has a 706 propane Farmall w/front end loader. He says the loader lifts slowly but the tractor will not move or steer properly. He replaced the hydraulic oil and filter but it didn't help. Where can I find a circuit diagram and test procedure? Any common fixes anyone knows of? Thanks for any help.




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the tractor vet

04-21-2008 13:53:10




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 Re: Farmall 706 Hydraulics in reply to Dave NM, 04-21-2008 12:59:42  
To start with your mobility problem starts with the MCV . Ya may have a bad pump maybe stuck valves in the MCV , blowen O/Ring and or Gskt's . To test one needs a JIC fitting that will go in the bottom plug hole in the MCV and a test gauge that can rear 600 lbs . Pressure should be over 200 i usualy set the pressures on a 706 at around 235-240 . Now as for the slow lift on the loader that comes from the rear pump , now if the draft control is botomed out then it will be slow try pulling it up and inch or so off the bottom . IF this has no affect then you will be time and money ahead to have the system flow rated by a pro with a flow rater . If that system is stock and has not been upgraded to a higher pressure relief or a larger GPM pump then the system should have 1750 lbs pressure at rated RPM and a flow of atleast 10 GPM.

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bc

04-22-2008 08:00:30




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 Re: Farmall 706 Hydraulics in reply to the tractor vet, 04-21-2008 13:53:10  
Hi vet, I've looked at the 706 drawings at caseih.com and can't figure out what you are calling the mcv valve. I've seen the term used on other threads. If you could ID the mcv by part number or parts drawing and its location I would appreciate it. I'm just trying to learn. My 2606 is similar to the 706 but it has a flow divider valve and control/pilot valve attached next to it and they are just left of the steering column. I just can't visualize the mcv on a 706. Thanks.

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