Posted 3/16/2008 22:06 (#335511 - in reply to #335495) Subject: Re: mysterious 5288 hyd coupler
WCNY
It should be an external hydraulic motor return. Keeps the hyd oil from getting hot with prolonged hydralic motor use. Little or no restiction of the the oil to return to rearend.
Good luck I have had a 5088 since 1985 or so, good tractor.