Massey 880 plow

Bill from Scotland · Oct 20, 2010

Just got around to assembling my Massey 880 6 bottom plow that came across from Canada, it was totally dismantled to get it into the container. It has the hydrolic trips for each of the plow legs. Now that I have all the pipes and hoses connected do I just link it up to my MF 1155 and go or do I have some bleeding to do to the system. The plow has what I think to be an accumulator fitted which seems pressurised. Any advice welcome.
Bill

unclemerle · Oct 20, 2010

Bill

You will have to cycle the bottems several times to get all the air out. To do this hook a hose to the valve next to the accumulator put your 55 in float lower the plow and drive forward. Once the bottems trip pressurize them and do it again till you have all the air out of the system. When you are done bleeding the system presurize it to say 2000lbs shut the valve and go plow. If the bottems trip build up pressure till they don't trip. Once you have the pressure where you want it you can take the hose off and plug the valve. We drug an 880 hyd.reset plow around for about 15 years and only had to raise the pressure a couple of times. We pulled our 6-16, 880 with an 1130 and later with a 1155. A true test for your 1155 is to feather the trottle back very slowly till it is at a dead idle with the plow in the ground. Then hit it and listen to that 540 V-8 wind back up. I would do that with the JD boys in the cab with me and ask them if they could do that with the green iron they ran. None of them would take me on and one of my friends still talks about it 27 years later.

Happy Plowing Merle

Heat Houser · Oct 20, 2010

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.

Post photos....would like to see it.....

Massey 880 plow

Bill from Scotland

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unclemerle

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Heat Houser

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