ID of dual hyd valves?

c.oawright · Jan 24, 2020

This valve is on a old 1977 255 Massey. Took a while to find the part number for this valve. It looks like I will have to take the whole lift cover off to get the valve removed to overhaul. The drawing does not show any through bolts to attach it to the lift cover and no obvious bolt are visible on the top of the valve.
One spool of the valve seems to be blocked in on direction
Anyone have any experience with this?
Thanks
Charles
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hymie2lt · Jan 24, 2020

Hi Charles
If I am not mistaken, I believe part number 56 are the cap screws that hold on the valve. I dont know if they simply screw into the lift cover or there is a nut on the bottom. drawing doesnt show a nut so I wouldnt think they are there. The valve I have on my tractors is similar, but the cap screws are longer and have nuts on the bottom. The cap screw holes will probably be full of dirt...you will have to clean them out to get at the cap screw heads.
If you loosen part numbers 46 and 47 it may free up your seized lever as well?
Wayne

ptfarmer · Jan 24, 2020

They do not have nuts on the bottom, I usually have to drill the bolt heads out to get those valves like that off since they are allen bolts, and they usually strip out in the head of the bolts.

c.oawright · Jan 24, 2020

Thank you and thanks for the replies. I did finally see the cap screws after cleaning out the grime and 30 years of dirt. The problem turned out to be the metering valve stuck.

ID of dual hyd valves?

c.oawright

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hymie2lt

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ptfarmer

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c.oawright

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