The only caveat with that fix, Fred, is that intermittent relays are there for a purpose.  They are supposed to be the weak link in a circuit where a continuous stuck relay could result in greater problems than a failure.  Does that protective function matter in this circuit?

Should be  considered.

John

 That is a failure mode I had not considered, to be sure.  However, consider: Intermittent relays (usually for starter motors) are intermittent because they are designed to carry LOTS of current for a short time and so have large pull in forces, but overheat after a few tens of seconds.  So they can not be considered for use in areas where continuous relays are used, like battery masters and such.  So we use continuous relays all the time, and count on circuit breakers to do the job if a short occurs. 

If you prefer an intermittent relay for your hydraulic motor, go ahead, but use a GOOD ONE that will last more than a few dozen cycles as reported previously.

Fred