Pumps Hydraulic Pump General Information General Information General operating notes for external gear units RE 07 012-B1 (PDF) Hydraulic fluid on a petroleum oil base for all hydraulic components RE 90 220 (PDF) Reference List of hydraulic fluids on a mineral oil basis for all hydraulic components RE 90 220-01 (PDF) Environmentally acceptable hydraulic fluids HETG, HEPG, HEE for all hydraulic components RE 90 221 (PDF) Environmental fluids reference sheet RE 90 221-01 (PDF) Water-based and synthetic fire resistant fluids for axial piston units RE 90 223 (PDF) Policy and Procedures Installation notes for axial piston units (Hydromatik products) RA 90 270 (PDF) Installation notes for axial piston units (Brueninghaus products) RA 90 400 (PDF) For more information or to order brochures and catalogs, contact your nearest distributor.