816 forward reverse shuttle stopped working

went to pull out of the driveway. pushed down on the  clutch. when I let up on the clutch the tractor would not go foreword or backward. There is a little friction that tells me it's trying to go. My clutch pressure is 100 psi at 1000 rpm  any ideas. I changed the filter after this,  and nothing changed 

the pressure seems to vary. Pulled apart the checks they seem ok. Where do you get parts for shuttle.  

One of the two 816's I had came with a ROPS canopy only, and somehow the fwd/rev. would take in rainwater and of course this is not good. The one with the enclosed cab never did. I assume your oil is clean... there is a screen to pull out and clean (at the bottom). In the event of contaminated oil, the converter needs to be drained as well, thankfully there is a drain plug on the converter in the 816. Sometimes maintenance on older machines has been neglected. This may not be the case for you however.

I once had a Case 680E with the same forward reverser transmission as the 816. One winter evening I parked it in the shed and everything was normal... in the middle of the night I was supposed to go snow pushing and the machine would not move. I felt this little nudging and could tell it was trying to move... but a slight flicker of movement on the wheels. It turned out to be the flex plate between the converter and the flywheel that was cracked since some time back and with enough movement on the converter wobbling the drive notches on the converter neck became damaged enough that the oil pump would no longer be propelled. My take on this is that without load the pump would spin enough to produce pressure but not enough to move the machine. We were able to build up the converter neck with weld and re-machine. Everything was normal once again... with the amount of labor it was not a quick fix but nothing was wrong with the forward reverser itself. 

taking the shuttle out. check the screen changed the filter. think piston seals are bad. would like to just swap it out for now.   Is there a place I can find a good use one in a 3 state radius of Wisconsin. And what do I look for in a used one 

Check with General Gear, Idaho. Machinery trader has access to wrecking yards, get on Minnpar's site and ID the part number then do a parts search. That and when found look to Minnpar for seals and gaskets first as they have the remaining old Allis inventory.

would you know what the borg wener number for the foreword reverse shuttle is

according to the AC parts guy. I just bought the last front piston on the shelf in the world, for $375 and there are 3 more cylinders left for $75 . no more front clutches left . Bought  the last shift cable a few years ago. Time to do a nice shuttle rebuild, and sell the old girl. Parts are getting hard to come by

Life would get real easy. If I knew what model borg wener it is

stamp in the casing is WG div 10-01-065-904 scc on the parts it's stamped T-11 400