Pressure relief valve

rockepg · Sep 2, 2016

hey guys quick question. I have a 66 MF135 standard 6 speed with live pto unit. What is the part number for the correct pressure relief valve for this unit? Seems like 3 or 4 options but not shure which is correct.

ptfarmer · Sep 2, 2016

There is 3 different pressure valves, the low 2300 psi valve is replaced with the 3000 psi valve. So there is only 2 different valves 3000, and 2700 psi (the 2700 psi was for orchard tractors).

883402M91 Valve Assembly, Safety (3000 P.S.I.)
884747M91 Valve Assembly, Safety (2700 P.S.I.)
190537M91 1 Valve Assembly, Safety (2300 PSI) (Order 883402M91)

rockepg · Sep 2, 2016

So the 3000 psi one is the "flavor" i want then correct?

ptfarmer · Sep 3, 2016

(quoted from post at 18:15:05 09/02/16) So the 3000 psi one is the "flavor" i want then correct?

It seems to be the standard for the 135's

rockepg · Sep 3, 2016

Hmm.. So i am looking at YT's parts list and i don't see a 3000 variety. They list:
http://www.yesterdaystractors.com/Massey-Ferguson-135_Hydraulic-Safety-Valve_883402M1.html
which is part number 883402M1 which i assume is a typo and should be 91. However they list it as 2750 variety. Am i missing something here or does YT just not carry the correct one?

ptfarmer · Sep 3, 2016

I don't think you will notice that much difference between 2750, and 3000 psi as far as lift capacity goes.

rockepg · Sep 3, 2016

So the threading is the same between them i assume? Both will fit it's just the pressure that is different correct?

ptfarmer · Sep 3, 2016

Threads should be all the same.

Pressure relief valve

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