Tagged: hydraulic spool flaps gear pressure This topic has 4 replies, 3 voices, and was last updated 4 months, 2 weeks ago by Ed Pulliam. Author Posts January 3, 2022 at 3:52 pm #2381 Paul BrukParticipant Does anyone have a source for a new ball and spring for the spool valve? January 4, 2022 at 11:34 pm #2386 Dean SiracusaKeymaster Did they get lost or break? We lost the ball we had, ordered an entire bag of them! I don’t have the spring though. January 5, 2022 at 4:48 pm #2387 Ed PulliamParticipant I feel like a dummy. What is the spool valve? January 5, 2022 at 5:06 pm #2388 Paul BrukParticipant The spool valve is the box mounted to the firewall with all the hydraulic lines attached. The front safety wired nut has a spring and a ball fitting. January 9, 2022 at 9:05 pm #2389 Ed PulliamParticipant Got it. Thank you Paul! Author Posts Viewing 5 posts - 1 through 5 (of 5 total) You must be logged in to reply to this topic.