Posted 4/8/2012 19:00 (#2327028 - in reply to #2326741) Subject: RE: JD 8400 Hydraulic issue
Central Illinois
Sounds to me like the vac is sucking the clean oil resevoir dry which overfills the rear end housing. I had this happen before and the problem ended up being the bias piston leaking. The bias piston is on the hydraulic pump if it has a big pump.