Fierylamb Posted April 29, 2022 Share Posted April 29, 2022 In the c130j aux sys when you turn off the aux pump pres is trapped in brakes, between check valve and brake control valve on one side and the check valve and brake selector valve on other side. But where does the pressure before going into the brake check valves bleed off at? For booster sys you have to move the flight controls because pres is trapped and for util sys you have to move flight controls and bleed brakes because pres is trapped, but why isn't pres trapped in aux? Where does it go? When using the hand pump pres bleeds off, you can see it in the direct reading gauge going down, but it stays in the brakes. Where is the pres bleeding off at? Quote Link to comment Share on other sites More sharing options...
Solution Fierylamb Posted April 30, 2022 Author Solution Share Posted April 30, 2022 I've found out that it's the cargo ramp and door manifold connecting pres and return internally Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted May 22, 2022 Share Posted May 22, 2022 The pressure escapes through the pump itself, as it spins the pump/motor backwards. That’s why we always gave it a bit before we turned the pump back on. Quote Link to comment Share on other sites More sharing options...
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