B275 Hydraulic Lift Questions

[Glenn B275]

I am a new owner of a well used 1962 diesel B275. This is the pre varitouch or single lever hydraulics version. Runs good but the hitch leaks down very fast.  A snowblower will drop from full up to bottom in under 10 seconds.  I assume the lever just lifts or drops and there is no actual position control if it leaks down.

I now have a new piston seal (https://www.ebay.ca/itm/205032602176).  Can I replace this seal without removing the whole reservoir top unit from the tractor?  Can I drain the oil and then remove the control valve body and get access to the piston? When looking at the diagrams for the top unit it looks like this is possible but not sure what hold the ram cylinder in place.  How is it sealed at the front?

Any suggestions welcome

Thanks

Glenn

Ford 9N

IH B275 

[Haystack]

Yeah u can do this without pullin the whole top cover mate. Drain the oil, then take off that round cast plate on the rear where the con rod hooks to the rockshaft. Disconnect the rod, blow a lil air through the valve port and the piston slides out the back. Check the bore for scorin while ur in there or the new seal wont last long. Good luck!