Senior MTF Member
Join Date: Jan 2008
Location: near Rochester, NY
Re: 3000 series hydraulic valve rebuild??
The answers are:
Two o-rings on the spool. Both 11 mm ID, 16 mm OD, 2.5 mm thickness (kind of hard to find!) and not a drop where it shouldn't ought to be!
My stack had a single o-ring on each hydraulic line (not two like in the parts diagram) and they were 5/16" ID, 7/16" OD, 1/16" thickness.
For the big money: Spent 10 hours of labor and $5 on parts doing it this way vs. 12 hours labor and $135 on parts by replacing the whole valve section vs. a huge bill from the dealer.
Near Rochester, NY
Yanmar 424 w/ turf tires, front end loader and 60" mower, Cub Cadet 42" hydraulic rototiller, Spyker 179 spreader, Turfvent 48" plug aerator, CountyLine 25 gal Deluxe Trailer Sprayer, Agrifab dethatcher
Sold: Cub Cadet 3225 - 60" mower, wheel weights, hydraulic front lift, 45" snowblower, , three point hitch, Johnny Bucket Jr. with extender and home-made caddy bars