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Farmall & IHC Tractors Discussion Forum
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M's hydraulic system

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Kevin Brooks

06-27-2005 15:26:54




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Where is the drain plug for the Hydraulics on an M? Underneath the clutch housing is a small curved, rectangular plate which looks like a cover of sorts and has a very leaky gasket or felt seal. I'd like to replace but not sure if there's a drain plug or if removal of the cover will precipitate the action. By the way, one kind of oil do you recommend as replacement for the hydraulics?




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williamf

06-27-2005 17:33:06




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 Re: M's hydraulic system in reply to Kevin Brooks, 06-27-2005 15:26:54  
I'm guessing you're talking about the cover that is to the rear of the hydraulic unit.(BTW, the trade name IH used for that unit is "Liftall.") There's a much smaller cover forward of the Liftall that is access to a grease zirk on the clutch release bearing. The cover to which I believe you refer allows access to the clutch drive shaft and the Liftall drive shaft. It should be dry in there; whatever is leaking out had to first leak from somewhere else. It could be coming from the Liftall or the transmission. Or both.
There's a drain for the Liftall slightly forward of that cover, on the bottom of the Liftall unit. Probably a square head plug, about 3/4 inch.
The Liftall was designed to use 30wt nondetergent motor oil. A lot of people have switched to regular hydraulic oil. If you're not using the hydraulics on your tractor you can easily uncouple the Liftall drive shaft and drain it.
Owner's Manual and Service Manual are readily available and all but indispensible.
Good luck,
Wm

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Nositri

06-27-2005 17:22:10




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 Re: M's hydraulic system in reply to Kevin Brooks, 06-27-2005 15:26:54  
The cover on the bottom of the Clutch/Transmission housing or torque tube as some like to call it is the cover for the liftall. . .There is a drain plug on the bottom of that I believe on the right side.



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