Palmettotractor
New member
Need help on how to troubleshoot or fix problem. My 6640 was low on fluid. Added about 3 gallons at rear of tractor. The next time I cranked it there was a strange squeal from it. 3 point hitch raised but then would not lower. After several days leaked down. I drained all fluid, which was milky but not evident on stick. Left draining several days. Broke lines open at low point near pump. Replaced 2 hydraulic filters, refilled. Still no hydraulic response. Do I need to bleed system? I need help solving....thanks for any comments.
