OK i would hate to tell you how many PTo"s i have worked on so i can tell you everything about one . First off if you pulled the valve spool out the top then tis is the problem as there is a tinny little pin that holds the two halfs of the valve together and if it came out the top then the little pin is sheared and you need to pull the sway bar support off the tractor and remove the BOTTOM plug under the control valve and DROP it out the bottom and you will have a two piece valve and if you look you will see where that little pin goes and you will have to go to your friendly Case I H parts to get that pin .Now the next problem you have is that you need a special fitting to screw into the test port on the left side of the PTo unit as when you fix the problem you MUST RESET THE PRESSURE for clutch lock up and this is done by screwing the valve stem into the nut that goes on top of the valve stem and the pressure for the lock up on a 1466 should be 250-265 , myself i set to the high side . Now if you do not have a test fitting you can order one from the Case I H store and you will also need a GOOD hyd. gauge that can read up to 600 Lbs . If you try to guesstamate it you may not get enough pressure to lock up the clutches or tomuch and blow the clutch pack out and causing more damage then you want. No you can not just take it apart while on the tractor as to remove the back cover you must tear the whole unit apart on the bench as you have to remove the clutch drum and here again you have to have a way to compress the heavy spring that returns the clutch piston then you remove the snap ring and then let the pressure off that spring and remove the drum . IF you must remove the unit it is wise to use a cherry picker and a short chain and have a pointed pry bar to help level the unit as it comes out . You must becareful when coming out as you MUST TIP the units nose upward as you come out so you do not bang the pickup tube as you can damage it real easy . It would be in your best intrest to get at l;east a IT manual on this tractor . OR let a pro do tis job It takes me from start to finish 4.5 hours to tear one down and do a total rebuild on one and put it back in the tractor refill the Hy Tran and warm it up to operating temp and set the pressure and that is another thing the hy tran must be at operating temp when making the pressure set to get it wright If you have problems and want to talk to me tomorrow mornig then either post on here or the I H board looking for me and i will give you my E/Mail and i will E/Mail you my land line and you can call me . .
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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