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Aq130 vibration damper

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crabbie72

Member
I am putting together my engin

I am putting together my engine. Two of the vibration damper springs are cracked. How important are they? Can I just put some rtv on them to keep them from rattling and falling out? Assembly is stuck.
 
"yes part #34, but only two of

"yes part #34, but only two of the six springs are cracked, not the damper itself. I didn't think rtv would keep them glued, just keep the pieces from coming loose. I know I am just looking for a cheap way out, but it seems that I shouldn't have to replace the entire damper, the cracked springs should still do the job. But I also don't want to get this whole thing together and find that it doesn't work."
 
"David, if you want to gamble

"David, if you want to gamble with your equipment and your safety, go the cheap way if you wish. But if you value safety and to save money in the long run, then bite the bullet now and replace the damper before you have a mishap (they are not serviceable anyway).

Think for a moment. The torsional torque was first absorbed by 6 springs, and now it is absorbed by 4. Translated, this means that: 1) every spring is taken 50% more load than before; and 2) how long do you think it will take for the remaining springs to break or become deformed to the point that they do not absorb the changes in load anymore? And when the remaining springs go, you will damage the splines in the shaft and int he absorber, and eventually wear them to the point that the absorber will end turning around a worn shaft and you will be stranded in the middle of nowhere.

Be cheap if you want to, but I don't think it is worth taking the risk for the sake of saving now a few bucks (it will cost you more in the long term, and possibly in more than one way).
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"Thanks guys, I know that you

"Thanks guys, I know that you are correct, there is no point in rebuilding an engine and then putting broken parts back.

My next question: do the springs usually break? I found a used damper but I don't want to put on a used one if the springs usually fail and I am just borrowing time (removing the engine to get to the flywheel is not easy). But if broken springs are not common, I would be very happy with a used on. My other engine probably has a 40 year old damper on it with no noticable problems."
 
"Check the overall condition o

"Check the overall condition of the used damper. How rusty is it? I would clean the plate up and spray some Corrosion-X or CRC around each spring, then pending inspection, install it. I have seen springs rusted solid, but not cracked.

Springs are made from hardened steel and can tend to be brittle, ie. candidates for cracking. I would not have an issue installing a used item that was in good shape."
 
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