Exhaust lift parts

There are two valves as I recall. One exhaust and one control valve. I think I bought the last NOS exhaust valve in the world and used it on my tractor so you will have to rebuild yours. I actually bought mine from case about 10 years ago. Joe's farmall might have them also. The control valve is usually shot. Carfully take it apart. Unscrew the two halves and clean them out real good. I collected a few untill I could make a good one. To remove the shaft you MUST REMOVE a pin so you can unscrew the shaft from the housing. That is how it is held in. I can't remember which pin needed to be removed (either the stop pin or the pin that holds the arm on the shaft). If the threads are shot in the housing, it will not matter, just pull the shaft out. Soak the valve in solvent for a couple days if the shaft is stuck. I had to put a threaded stainless insert into mine to restore the threads. There is a thick rubber disk and a brass disk inside the control valve. The brass disk is usually good, the rubber will need to get replaced (make it or find nos). Make sure the grease fitting in the bottom is good. The unit should stay well greased to protect it. There are seal on the shaft also. Go down to a shop that sells bearings and seals. Buy a quad-seal that will fit the shaft and the groove in the housing. Hope this make sense. Good luck, Terry