KYB PSV2-55T Hydraulic Main Pump Repair Parts Kit

The KYB PSV2-55T is a tandem variable displacement axial piston pump serving as the main hydraulic power source for 12-14 ton class excavators. This repair kit restores the rotating group and sealing system to OEM performance standards. Kit contents comprise two cylinder blocks, eighteen piston shoes, two valve plates (left and right), two cam rockers, two ball guides, one drive shaft, four axle shafts, and one complete seal kit. All components are manufactured to interchange with original KYB specifications for the PSV2-55T and PSV2-55T-2 pump models. Primary applications include JCB JS120, JS130, JS130W tracked and wheeled excavators, and Sumitomo SH100, SH120, SH130, SH135 hydraulic excavators equipped with the KYB PSV2 series main pump.