warrenehc Posted August 18, 2021 Report Posted August 18, 2021 Hello, I got some bad news today. One of the engine mount frame tubes has a crack in it. Is there anyway to weld or replace without having to pull the engine.
kortopates Posted August 18, 2021 Report Posted August 18, 2021 Hello, I got some bad news today. One of the engine mount frame tubes has a crack in it. Is there anyway to weld or replace without having to pull the engine. You really don't want anyone welding with the engine mount still on the airframe. Plus personally I wouldn't settle for anything less than replacing the cracked tube section; although typically other options are possible. It's not a big deal to lift the engine, pull the engine mount, repair and refinish to like new. Then rehang with new engine mounts and hardware if desired.What caused the crack? YesThey don't usually crack on their own.Sent from my iPhone using Tapatalk 1
Greg Ellis Posted August 18, 2021 Report Posted August 18, 2021 Depending on where it is cracked there is a service bulletin out on the older engine mounts. I had to replace mine when it cracked in the exact spot the SB said it would. https://www.mooney.com/wp-content/uploads/2020/12/SBM20-175.pdf 1
warrenehc Posted August 19, 2021 Author Report Posted August 19, 2021 26 minutes ago, Greg Ellis said: Depending on where it is cracked there is a service bulletin out on the older engine mounts. I had to replace mine when it cracked in the exact spot the SB said it would. https://www.mooney.com/wp-content/uploads/2020/12/SBM20-175.pdf Yes, mine did it at the same place on the bulletin. What company did you use to replace.
carusoam Posted August 19, 2021 Report Posted August 19, 2021 Repair vs. replace… You might consider going with a preflown part for that… My M20C broke two welds off the pilot side lower engine mount…. Leaving the engine hanging by three bolts in place of four… PP thoughts only, not a mechanic or parts sales guy… Best regards, -a-
N201MKTurbo Posted August 19, 2021 Report Posted August 19, 2021 Send it to Laser. The best Mooney tube welders out there. I had a cracked mount about 30 years ago. I sent it to Laser and it came back looking like new. 1
Greg Ellis Posted August 19, 2021 Report Posted August 19, 2021 1 hour ago, warrenehc said: Yes, mine did it at the same place on the bulletin. What company did you use to replace. I purchased a used one that already had the modifications done to it. I got it from @Alan Fox here on Mooneyspace.com. 1
Alan Fox Posted August 19, 2021 Report Posted August 19, 2021 I may have an engine mount , Call me at 856 419 5209
Alan Fox Posted August 19, 2021 Report Posted August 19, 2021 13 hours ago, kortopates said: You really don't want anyone welding with the engine mount still on the airframe. Plus personally I wouldn't settle for anything less than replacing the cracked tube section; although typically other options are possible. It's not a big deal to lift the engine, pull the engine mount, repair and refinish to like new. Then rehang with new engine mounts and hardware if desired. What caused the crack? YesThey don't usually crack on their own. Sent from my iPhone using Tapatalk It is very common for them to crack on thier own , 1
Guest Posted August 19, 2021 Report Posted August 19, 2021 Mooney SB 175 & &192 as well as the AD applies to engine mounts. Clarence
carusoam Posted August 19, 2021 Report Posted August 19, 2021 A good opportunity to have the engine mount sent out and OH’d… Cleaned, inspected, checked for cracks, like new when done… Often considered post ground strike, as the mount supplies the equal and opposite force to whatever the engine experienced… PP thoughts only, not a mechanic… Best regards, -a-
ArtVandelay Posted August 19, 2021 Report Posted August 19, 2021 It is very common for them to crack on thier own , I would have the prop balanced if you have cracked baffling or mount. Could be a sign your engine is out of balance.
kortopates Posted August 19, 2021 Report Posted August 19, 2021 4 hours ago, Alan Fox said: It is very common for them to crack on thier own , I assume just the vintage ones; especially before the reinforcement SB? Don't see this on the modern Mooney's.
Alan Fox Posted August 19, 2021 Report Posted August 19, 2021 7 hours ago, kortopates said: I assume just the vintage ones; especially before the reinforcement SB? Don't see this on the modern Mooney's. Pre J , J and later are counterbalanced and reinforced.. 1
Alan Fox Posted August 19, 2021 Report Posted August 19, 2021 10 hours ago, ArtVandelay said: I would have the prop balanced if you have cracked baffling or mount. Could be a sign your engine is out of balance. prop balancing is not what affects the mount , it is harmonic balance , Thats why the repair , is a reinforcement....
BKlott Posted August 20, 2021 Report Posted August 20, 2021 I recently got mine back from AWI in Minnesota. Took almost two months to the day to get it done but came back looking great. 2
carusoam Posted August 20, 2021 Report Posted August 20, 2021 BK, What did you have done there? Is that an OH of the mount? Best regards, -a-
BKlott Posted August 20, 2021 Report Posted August 20, 2021 15 hours ago, carusoam said: BK, What did you have done there? Is that an OH of the mount? Best regards, -a- Essentially it is an overhaul of the mount. They removed the old paint, inspected the entire mount, repaired one section that had been damaged (probably by a tie wrap), added an approved beef up kit and refinished it with the color of my choice. AWI was in the process of moving to a new location which impacted their turnaround time. The two month time frame really didn’t impact me as I did this during my engine overhaul, which has been a four+ month project. 1
FastTex Posted August 21, 2021 Report Posted August 21, 2021 On 8/19/2021 at 7:50 AM, carusoam said: A good opportunity to have the engine mount sent out and OH’d… Cleaned, inspected, checked for cracks, like new when done… Often considered post ground strike, as the mount supplies the equal and opposite force to whatever the engine experienced… PP thoughts only, not a mechanic… Best regards, -a- That's exactly what I did when I got my Mooney. While doing some engine work the A&P noticed one of the brackets was not right. I told him to send the engine mount to OH. 17 microfractures later and new rubbers thingy, it came back like new with the yellow tag (~$700)...I'm glad I did it. Highly recommended if you are doing work on your engine. My 2c. 1
FastTex Posted August 21, 2021 Report Posted August 21, 2021 On 8/19/2021 at 9:15 PM, BKlott said: I recently got mine back from AWI in Minnesota. Took almost two months to the day to get it done but came back looking great. Same place where I sent mine a few years ago. Good job.
Raymond J1 Posted August 21, 2021 Report Posted August 21, 2021 I took advantage of the great visit to do a penetrant check of mine, which had already been strengthened according to the SB in 1986.
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