Is this supposed to loose?

[Huckster79]

This bolt appears to have been safety wired in place loose… That’s not right is it?  It’s the exhaust support strap bracket

Edited May 8, 2023 by Huckster79

[47U]

3 hours ago, Huckster79 said:

That’s not right is it?

Ummmm.  The Doc’s figure shows the bolt as index 26, pn AN3-11A, which is does not have a drilled head.  You have an AN3H-11A installed (or -11 if the shank is also drilled, which we can’t see).

It’s a high-vibration environment… perhaps mx thought the nut plate was a lacking in free-running torque so installed the bolt with the drilled head and safetied it for peace of mind (rather than change the nut plate?).  

I’m obviously just guessing, my tailpipe support has springs.  

That’s a good job to notice something that you thought might be suspect and ask the question.

 

[Huckster79]

15 hours ago, M20Doc said:

Yes, there are two bushing used in the mounting block

Gotcha I believe so to make sure I understand you: the bushings allow some "slop" for that bolt? or the bushings are worn allowing slop that isn't supposed to be there? 

Ray

 

Edited May 9, 2023 by Huckster79

[Browncbr1]

yes, the bushing intentionally allows movement for the engine/exhaust

[Huckster79]

51 minutes ago, M20Doc said:

The bolt and bushing should be tight in the nut plate on the firewall and the block should rotate on the bushing.  The lateral bolt should be tight on the bushing allowing the bracket, bolt and bushing to rotate in the block.

thank you- makes sense.