"rangerssuck" wrote in message
...
snip
My own thought would be to add a valve and line. The valve would open
when the pump is commanded to stop moving and would connect the pressure
side to the return side. So even if the motor kept running , there
would be no pressure to the hydraulic pump. May be a lousy idea as it
would not lock the position.

Dan

I'm feeling like taking your approach one step further and connecting the
two lines from the motor to each other should get the thing to stop on a
dime. But see my response to Tim for more detail.

That works on electric motors but on hydraulic motors the fluid out would be
free to flow to the IN, allowing a coast to stop. If you stop the flow in
and block the flow out it will stop instantly but have a high pressure spike
due to inertia. A relief valve could relieve the high pressure spike or you
can ramp down using flow control of some sort.

RogerN