Tap here to read more about Hydraulic Pump Repair Kit for Massey Ferguson 168 250 265 275 285 290 298 340. Premium Quality Replacement Part Hydraulic Pump Rebuild Repair Kit. For Massey Ferguson Models: 168 250 265 275 285 290 298 340. 1x Hydraulic Lift Pump Rebuild Kit : 1810859M91. 2x Valve Chamber Assembly 2 x Piston 2 x Camblock 4 x Piston Rings 1 x O'Ring Kit & Gasket Kit.