Item 7027619 has must read information.
: The hydraulic pump portion of the valve assemblies is being replaced with whole rebuilt valve assemblies. For replacement on T-350, tow-able trailer boom, please replace with P/N 4641342. For replacement on T-500, tow-able trailer boom, please replace with P/N 4641343. At this point in time we are replacing the hydraulic pump portion of the valve assemblies with whole rebuilt valve assemblies. For replacement on T-350, tow-able trailer boom, please replace with 4641342. For replacement on T-500, tow-able trailer boom, please replace with 4641343. Additional Factory Comments: PN 7027619 is still available for locations where the valve assembly can be disassembled, the internal pump removed and all resulting hydraulic spillage contained.