In the process of replacing rear pads and rotors on 06 93-Aero and have been stopped dead unable to loosen the torx-nuts holding the caliper bracket. This bracket needs to be loose to allow for the old rotor to be removed. After applying WD40 and a few strategically placed hammer hits the bolts are standing fast.

A note I do not have access an air gun...

Any suggestions??

 

What length breaker bar are you using? You won't be able to take those off with a small ratchet if they were torqued by a shop with an air gun.

 

Tried a 14" 1/2 ratchet with no success.

 

Try something longer. 2' breaker bar is what I use when I can't get something off. Those guys with air guns have no regard for torque specs...

 

It may be super torqued like Roto suggested, or it could just be corroded in there. If its corroded, you can go to sears or an auto parts store (a good one) and buy a MAP Gas kit (medium temperature torch) and heat the bolt up.

 

Or that Though I wouldn't resort to torching that area until leverage has been tried. There's rubber/plastic parts that are there that will need to be replaced.

 

Yes, most definitely a "last resort". B-)

 

After many attempts and alot of frustration I gave up and took the car to my SAAB dealer. It took them @ 45 minutes to break the bolts loose and that was with an air-gun. I still had to wrestle the bolts out but with far less effort then trying to break them free. After that the new rotors and pads went on in 15 minutes. A reminder that the caliper piston needs to twist and be pushed in so you will need a special tool not the old standby of a C-clamp.

 

I just use a big screwdriver... I refuse to buy special tools for anything other than headbolts.