Fly Boomer Posted November 25 Report Posted November 25 My high boost "lockout" device is bent and broken. Functionally, the high boost switch works fine, and it's not likely I will accidentally use high boost instead of low, but I just don't want to see that forlorn little red sheet metal hanging down. This picture wasn't taken specifically to show the high boost switch, but you can see the "lockout" device hanging down. I have spent a couple of hours researching this but have not found it. Anyone know where to get one?
PT20J Posted November 25 Report Posted November 25 Often items related to electrical parts (such as your switch) are found at the back of the Service & Maintenance Manual.
LANCECASPER Posted November 25 Report Posted November 25 7 hours ago, Fly Boomer said: My high boost "lockout" device is bent and broken. Functionally, the high boost switch works fine, and it's not likely I will accidentally use high boost instead of low, but I just don't want to see that forlorn little red sheet metal hanging down. This picture wasn't take specifically to show the high boost switch, but you can see the "lockout" device hanging down. I have spent a couple of hours researching this but have not found it. Anyone know where to get one? I think the little spring that is in there is either gone or stretched out
Fly Boomer Posted November 26 Author Report Posted November 26 5 hours ago, LANCECASPER said: I think the little spring that is in there is either gone or stretched out Yeah, I was hoping to find another one in better shape for $10, and just bolt it on. But it looks like I may have to pull it off, and try to fix it.
Fly Boomer Posted November 26 Author Report Posted November 26 7 hours ago, PT20J said: Often items related to electrical parts (such as your switch) are found at the back of the Service & Maintenance Manual. As you suggested, it's in the back of the SMM as MOONEY 930028-501, and that number is listed by LASAR in their new parts catalog. Unfortunately, it looks nothing like the one on my airplane AND it's "SOLD OUT". That said, I would not have discovered these facts without your suggestion. Thanks!
Z W Posted November 26 Report Posted November 26 This is how mine sits. It actually performs its function just fine, and you can still twist it out of the way if necessary to operate the switch. But it looks odd. Been thinking about going after it for a while. Concerned I'll break something without available replacement parts. If anyone has done the job before I'd be interested to know.
Fly Boomer Posted November 26 Author Report Posted November 26 1 hour ago, Z W said: This is how mine sits. That's hilarious. Yours is identical to mine. Apparently a weak spot. If you find a solution, please post back, and I will do the same.
N201MKTurbo Posted November 26 Report Posted November 26 Maybe one of these would work. https://www.appliedavionics.com/switch-guards-panel-plugs.html 1
Fly Boomer Posted November 26 Author Report Posted November 26 1 hour ago, N201MKTurbo said: Maybe one of these would work. https://www.appliedavionics.com/switch-guards-panel-plugs.html Thank you. Those look similar to the one on the LASAR site. Probably would work but, if I can't find one like I have or fix it, I'll probably just remove it and pretend like it was never there. 1
N201MKTurbo Posted November 26 Report Posted November 26 28 minutes ago, Fly Boomer said: Thank you. Those look similar to the one on the LASAR site. Probably would work but, if I can't find one like I have or fix it, I'll probably just remove it and pretend like it was never there. Sounds good. Unless it is mentioned in the TCDS. It isn’t required. I don’t think it is. Besides, those covers are used in biz jets. They cost about $400 each. 1
Z W Posted November 26 Report Posted November 26 1 hour ago, Fly Boomer said: Thank you. Those look similar to the one on the LASAR site. Probably would work but, if I can't find one like I have or fix it, I'll probably just remove it and pretend like it was never there. I wouldn't do that. The guard is there because if you accidentally turn on the high boost pump when the engine-driven pump is functioning, it will flood the engine and the motor will stop. That's actually how you test to make sure the high boost function is working - you turn it on while the engine is running and the engine shuts off. Preferably on the ground.
Fly Boomer Posted November 26 Author Report Posted November 26 4 hours ago, N201MKTurbo said: They cost about $400 each. I'm growing accustomed to outrageous prices, but that seems like a lot for a little piece of sheet metal and a spring. I think I'll pass this time.
Fly Boomer Posted November 26 Author Report Posted November 26 3 hours ago, Z W said: I wouldn't do that. The guard is there because if you accidentally turn on the high boost pump when the engine-driven pump is functioning, it will flood the engine and the motor will stop. That's actually how you test to make sure the high boost function is working - you turn it on while the engine is running and the engine shuts off. Preferably on the ground. Well, that would be embarrassing, to say the least. I guess I will have to pull it off and see if I can figure out how it is supposed to work.
N201MKTurbo Posted November 26 Report Posted November 26 So, if you do turn on high boost and the engine stumbles from being too rich, it will smooth out ( or restart) instantly when the switch is turned off. FWIW, a friend of mine destroyed an engine by trying to start it with the high boost on. It hydro locked.
Fly Boomer Posted November 27 Author Report Posted November 27 2 hours ago, N201MKTurbo said: FWIW, a friend of mine destroyed an engine by trying to start it with the high boost on. It hydro locked. Ouch. Didn't realize that was possible.
N201MKTurbo Posted November 27 Report Posted November 27 1 hour ago, Fly Boomer said: Ouch. Didn't realize that was possible. https://www.victor-aviation.com/pdf/tech-docs/TCMSB96-11B_PropStrike.pdf
MikeOH Posted November 27 Report Posted November 27 1 hour ago, larryb said: Another perfect application for a 3D printer. Or, five minutes with tin snips, pliers, and a can of Krylon 1
Fly Boomer Posted November 27 Author Report Posted November 27 11 hours ago, N201MKTurbo said: https://www.victor-aviation.com/pdf/tech-docs/TCMSB96-11B_PropStrike.pdf Thanks! I recall reading all the things that are considered a prop strike (ignored by some owners and mechanics), but I did not remember anything about hydraulic lock. I know it's a common occurrence on round engines, but never made the connection to over-boosting.
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