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Re: 450 a cheapened version of SMTA?
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Posted by SMA in NE on May 16, 2005 at 06:47:48 from (12.186.41.81):
In Reply to: 450 a cheapened version of SMTA? posted by Not sure on May 15, 2005 at 18:21:35:
The 450 should have the same front wheels from the factory as the Super M. One problem with the hydraulics on a 450 is one pump supplies both the power steering and tractor valves. There is a valve that divides the supply between these two sources. This valve has an orifice in it that becomes worn and allows the oil to take the path of least resistance. When you want oil at your tractor valves to lift something the path of least resistance is to send more oil through the power steering. If you have a front end loader and are carrying something, when you try to turn the wheels the path of least resistance is to send oil through the hydraulic valves. The valve with the orifice is supposed to divide the oil proportionately between the power steering and the tractor hydraulics. After almost 50 years this isn't happening any more. I used to have an F-11 loader on my 450 and the power steering seemed to be lacking when moving round bales. An old IH mechanic drilled out the orifice that sends oil to the power steer to allow more flow to the power steering unit. Not one of IH's best designs for hydraulics. Other than that I liked the tractor, always started and ran good. I sold it to a good friend of mine, since then he has bought another gas 450 and a diesel 450.
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