DENISON HYDRAULICS Goldcup series 6C, 7A & 8A Axial Piston Pump – General Information Leave a Comment / Uncategorized / By Andrew Soper Variable Displacement With Auxiliary Package Conversions and formulas If it is in parenthesis it is metric ..SI Units. Check rotations…R=CW….L=CCW…viewed from the shaft end.When you put back fluids in the plug, it will be put be back in when a filter is used from port D to portH.