AERO Specialties HPU-4 Assists A&P technicians with performing aircraft hydraulic tests including landing gear and control surface actuation. Use of the HPU replaces the need to use the on-board aircraft hydraulic pumps, reducing wear and long-term maintenance cost. – Intuitive digital control interface – 3 adjustable flow and pressure setpoints allowing for simple adjustments during testing – Digital display of pressure, flow, temperature, reservoir level, and fluid flow path – Supply/return filter clog indication – Push button control of bypass valve and reservoir selector valve – Comprehensive fault and advisory list to assist with troubleshooting – Enhanced safety logic preventing incorrect operation – Seamless option integration (return backpressure gauge, contamination monitor) – 3-micron supply filter – 5-micron return filter – Toolless access doors allowing for simple filter changes and regular maintenance – Drainable 75-gal (284L) stainless steel reservoir with redundant reservoir level sight glass – Twin fan oil cooler – Full length internal and external drip trays – Galvanized base frame with hydraulic fluid resistant, powder coated steel top frame – Steerable towing gear – Corrosion resistant aluminum cover panels – -16 (1″) Supply Hose – -24 (1.5″) Return Hose – 2AWG 4 wire Type W Input Power Cable 2 year, bumper to bumper, factory warranty Electrical plug for input power cable not included Aircraft hydraulic couplers sold separate See specification sheet for HPU performance, input power requirements, and available options