1540 Massey Ferguson hydrostatic transmission

homeowner

New User
Hi, does anyone know what would make a hydrostatic transmission pull in reverse automatically. to get it in gear you have to equalize the pressure by accelerating until you can select a range then release the pedal and it moves in reverse. I've changed both filters and no change. thanks
 
Hello,
By moving the pedals slowly by hand are you able to find the neutral point? Does forward direction work satisfactorily? From my info you have two pedals, one for forward and one for reverse. Make sure that when you move one there is no movement on the other one. Check the linkage back to the transmission for any seizure but also any wear. There is a shock-absorber in the linkage. Ensure that this is working correctly and that the bushes in the ends have no wear.
Let us know what you find.
DavidP, South Wales
 
(quoted from post at 05:01:56 03/26/14) Hello,
By moving the pedals slowly by hand are you able to find the neutral point? Does forward direction work satisfactorily? From my info you have two pedals, one for forward and one for reverse. Make sure that when you move one there is no movement on the other one. Check the linkage back to the transmission for any seizure but also any wear. There is a shock-absorber in the linkage. Ensure that this is working correctly and that the bushes in the ends have no wear.
Let us know what you find.
DavidP, South Wales
Thanks for the reply David. The linkages and pivot points are all in very good condition. I used the tractor on a Saturday and everything worked as it should. Let it sit about two or three weeks went to use it and it started out fine then somehow when I lifted off the accelerator instead of going in neutral, it wanted to go in reverse and yes the forward travel is being restricted. The tractor only has about 510 hours on it, not much more than broke in. Thanks again.
 

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