Excavator Pump Parts Hydraulic Pump Repair Parts PSVD2-26E/27E Kit for Kayaba Excavator This piece is the mounting base for the swash plate. The swash plate sits on the support. The support can swing on the pivot shaft and change how much the swash plate tilts. Full assembly sequence: Drive Shaft → Cylinder Block → Ball‑Guide → Set‑Plate → Piston Shoe → Swash Plate → Support Core Functions Load-bearing & mounting: Keeps the swash plate fixed and handles heavy thrust loads