bdavis3223 Posted August 16 Report Posted August 16 I have a 1967 M20F. I had a leak in the hydraulics for my flaps about a year ago. I had it fixed, and now there is another leak. Is this just a coincidence or is it a common problem?
Kelpro999 Posted August 16 Report Posted August 16 At 58 years old things tend to leak from time to time. 2
Ragsf15e Posted August 16 Report Posted August 16 54 minutes ago, bdavis3223 said: I have a 1967 M20F. I had a leak in the hydraulics for my flaps about a year ago. I had it fixed, and now there is another leak. Is this just a coincidence or is it a common problem? I had my 68F for 10 years and thankfully never had a problem with the hydraulic flaps. @Shadrach is our local hydraulic flaps expert. He can probably tell you. Usually once they’re set up well, they work fine.
47U Posted August 16 Report Posted August 16 3 hours ago, bdavis3223 said: Is this just a coincidence or is it a common problem? 27 minutes ago, N201MKTurbo said: Where is it leaking from? And where was it leaking from the first time you had it fixed?
Shadrach Posted August 17 Report Posted August 17 5 hours ago, bdavis3223 said: I have a 1967 M20F. I had a leak in the hydraulics for my flaps about a year ago. I had it fixed, and now there is another leak. Is this just a coincidence or is it a common problem? It would be unusual for seals to leak after a year. They often go decades without problems. Post some pics of the leak.
cliffy Posted August 18 Report Posted August 18 Did you ever change the fluid line from the pump to the flap actuator? If not its as old as the airplane and mine started leaking. To replace it is a little project As above- where is it leaking from? Same place as the last time?
bdavis3223 Posted August 23 Author Report Posted August 23 On 8/17/2025 at 9:39 PM, cliffy said: Did you ever change the fluid line from the pump to the flap actuator? If not its as old as the airplane and mine started leaking. To replace it is a little project As above- where is it leaking from? Same place as the last time? The first leak was from the actuator. I'm not sure exactly where this one is. I decided to wait until the annual in October to have it fixed. I'm not sure about the fluid line, but you're right, if it's as old as the plane it's time to replace it.
cliffy Posted August 24 Report Posted August 24 Its as old as the plane for sure and so is your rubber manifold pressure line under the panel. If you have a rubber fuel pressure line under the panel it might need a look see also. 1
HelofixR Posted Monday at 05:11 PM Report Posted Monday at 05:11 PM I recently purchased a '67 M20F as a project. All the brake and flap hoses are original. I plan to replace all rubber hoses and replace all seals, gaskets and o-rings in the master cylinders, calipers, parking brake and flap actuator. I know it can be a bit pricey and a lot of time, but then I should be trouble free for a while. 1
cliffy Posted Tuesday at 12:10 AM Report Posted Tuesday at 12:10 AM When I did my brake calipers the first time the 5606 FLUID HAD CHANGED TO JELLY under the brake puck!
HelofixR Posted Tuesday at 03:19 AM Report Posted Tuesday at 03:19 AM I can believe that. I won't be surprised if the hydraulic fluid in my brake and flap systems are all gummed up as well.
Recommended Posts