Posted by Heat Houser on October 20, 2010 at 17:28:48 from (173.14.193.161):
In Reply to: Massey 880 plow posted by bill from scotland on October 20, 2010 at 14:37:04:
The accumulator was fitted for use on tractors with an open center hydraulic system.
With a closed center hydraulic system, you don't need the accumultor. With my MF880 on my JD4630 tractor, one hose hooks to one of the outlets and that lever is tied back to keep it energized all the time. The other returns directly to sump. If it trips, the sump hose dumps the oil coming out of the cylinder (thru a relief valve)and once the obstruction is cleared, the hose from the outlet extends the cylinder and resets the bottom into position. Obviously, the relief is set higher than tractor standby pressure.
I do not know if a tractor's closed center system would work on a plow set up for an open center system.
Your MF1155 should be a closed center system I think.
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