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Re: 856 transmission problem


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Posted by joe blow on December 23, 2009 at 21:44:01 from (74.220.14.47):

In Reply to: Re: 856 transmission problem posted by Owen Aaland on December 23, 2009 at 18:19:30:

Thanks for the responses. This is my friends tractor. My friend Paul had someone else do the clutch a month ago because of the slipping problem. The guy brought it back with something still slipping,and now wont talk to Paul. Paul thought he didn't do any thing to the tractor. Now being friends I end up spliting it, There was a new clutch but the trans seal was leaking oil between the two shafts, so I thought that was it. I put new seals in the nose cone of the trans. I got a new disk because that one was oil soaked and took the flywheel, disk, and pressure plate to the machine shop, they measured it up and said it was all in speck. I did reuse the pressure plate that was new a month ago. I cleaned the pressure plate and flywheel with break clean. Put it back together and it seems better but it isn't right. I have about one and quarter inch of free travel in the peddel, and I took the bottom cover off to make sure the through out bearing was not riding on the fingers. The dump valve linkage is not binding. I belive it is set right, with the clutch pedel released the dump valve linkage still has about a 1/8" of play. When I push the clutch pedel the light in the cab come on. The clip on the TA spool was up about 1/8" with the TA in high so I adjusted down a little. I did not adjust the trans break.    The breaks work good, but I think the steering should be better, I did some reading hear and thought the problem must be the mcv valve or pump,so I put a gauge on the mcv valve,It did not read at free flow,but my gauge goes to 5000 psi so there might of ben a little pressure. I turned the wheel to the right and held it and pressure only went to 1000 psi in the IT book it said it should go to 1900 psi. so we got a pump, and sill the same problem. I wont get back to it for a few days. I guess I should put a guage back on it. Maybe that dump valve isn't holding pressure???
When I let the clutch out, the tractor acts like it is in neutral for about two or three seconds then will start to move. if it is reved up it still has the delay then jurks in harder.   If it is moving in gear and I push the breaks it dies down the engine but I can stop the tractor. This is not very consistant. When I first start the tractor and did hold the breaks it will almost kill, Then drive it in the field for 5 min it bearlly wants to move it self. I know that is hard on things,and I have only done it a couple tims.I normally wouldn't do that.   


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