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2015 Audi A8: torquing caliper bracket bolts


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Jax904
New User

Aug 25, 2023, 7:06 AM

Post #1 of 5 (3836 views)
2015 Audi A8: torquing caliper bracket bolts Sign In

Hello experts! I could use some advice here.

I'm currently in the process of replacing the front pads and rotors on a 2015 A8L 3.0T w/ 58k miles. I've got the vehicle lifted on the passenger side, held up with a floor jack and have a second jack and jack stands placed as precaution. Removing and replacing the pads and rotors went without issue, but now I'm having difficulty getting enough leverage to properly torque the caliper bracket. I had already applied Loctite blue to the bolts and started to tighten them down, but it got to a point where I couldn't position myself or torque wrench to tighten it more. Torque spec on bolt is 196 Nm (~144.6lb ft). What are my options now? I was debating getting out the spare scissor jack and jacking up the other side to get the other wheel off the ground so that I can turn the front wheels to get a better angle at the caliper bolts. Should I just turn the steering wheel? Concerned about vehicle falling off jack/stand. So, two issues: (1) I'm not sure if this is risky with the car already lifted on one side, and (2) should I even try to turn the bolt now since the Loctite has probably dried?

If I leave as-is and continue to do the driver side, should at least take it to a shop and have them check the torque while on a lift? I'm assuming, in doing that, it could break the Loctite...and at that point, would the bolt have to be removed again, cleaned/re-Loctite/or replaced?


(This post was edited by Jax904 on Aug 25, 2023, 7:57 AM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 25, 2023, 9:20 AM

Post #2 of 5 (3810 views)
Re: 2015 Audi A8: torquing caliper bracket bolts Sign In

Can't you turn the wheel to get access and leverage on the bolts?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Jax904
New User

Aug 25, 2023, 9:22 AM

Post #3 of 5 (3806 views)
Re: 2015 Audi A8: torquing caliper bracket bolts Sign In

I did contemplate turning the wheel, but with one side lifted, could this cause enough instability and some roll which would result in the vehicle sliding off jack/stands? Even if I could turn the wheel without issue, any concern about breaking the Loctite seal?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 25, 2023, 9:47 AM

Post #4 of 5 (3800 views)
Re: 2015 Audi A8: torquing caliper bracket bolts Sign In

Seriously...... if you have to ask questions like this, you are not the guy that should be doing this.

I can't tell you if the car is supported safe enough to work on.

You never should have used loc-tite in the first place. That's the reason it has a torque spec, to insure it doesn't come loose. The Loc-tite has skewed all your torque readings anyway.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Jax904
New User

Aug 25, 2023, 10:57 AM

Post #5 of 5 (3788 views)
Re: 2015 Audi A8: torquing caliper bracket bolts Sign In

Seriously....I came here for for encouragement and advice. Not discouragement or disparaging remarks. I would expect better from a moderator.
My original post may be regarding a trivial matter for many. I took on this project to build on my DIY experience. This is only the 6th vehicle I've changed pads and rotors on, but first AWD sedan with air suspension and more complex suspension geometry (ie limited clearance) -- I've never had an issue with clearance or torquing on the others (Audi, Porsche, Mercedes, BMW, and Honda).

People learn from mistakes, but obviously in this case, I don't want to make a mistake that would result in damage to the vehicle or injury.
And yes, I'm aware that torque spec is for dry. The factory bolts already have thread lock, and since I'm not replacing with new, I thought I'd apply thread lock just as many people do.






 
 
 






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