Bobcat 3023 tractor hydrostatic drive problem

[stevet79]

I have a Bobcat 3023 tractor with trencher and when it starts pulling hard the drive system disengages and goes into freewheel mode. If you are on a hill it rolls. The only way I can get it to re-engage is to shutdown the motor and restart it. All other hydraulic functions continue to work when this happens.
Any help would be appreciated.

 

[enginespirit]

what is this machine . Do you can take a picture ?

 

[Jabonee]

Sounds like your describing a relief valve failing. Dose it fail in both directions?

 

[stevet79]

I had given up on this thread.
Yes it fails in both directions.
Thanks for your reply.
S

 

[Jabonee]

Can you post the sn# ? :thumbsup:

 

[stevet79]

This issue still exists:
I have a Bobcat 3023 tractor with trencher and when it starts pulling hard the drive system disengages and goes into freewheel mode. If you are on a hill it rolls. The only way I can get it to re-engage is to shutdown the motor and restart it. All other hydraulic functions continue to work when this happens.
Any help would be appreciated.
I'm offering a reward to the person or persons that can tell the fix for this is. All I'm asking for is the knowledge you might have and if what I'm given fixes the problem I'll pay $$$.
Any takers?
ST