anyone know a trick to get the two larger bolts on the back of the calipers? Tried wd40 any help would be great

 

The bolts that hold the bracket assembly to the car- those are on with 80 foot pounds torque- same as the wheels are supposed to be
Turn the wheel in the direction of the side you are on to expose the bolts
If fronts- put a 19 MM wrench on that inner nut you can just see the edge of, then push down on the ratchet/socket bar with your foot- should come loose then

Shoot lots of WD in the center hub- rust lives there and is very grippy

Good idea to bleed the brakes first to avoid backwashing crud into the system, causing caliper failure in a month

 

thanks i'll try again

 

Use a 1/2 inch wrench not a 3/8 if thats what your using

 

They're really on there and seem like they won't budge...anymore suggestions before I decide to give up and go pay for it to be done?

 

~Leverage~

Assuming you removed the 2 smaller bolts and the caliper and have it safely tied up to the strut with a wire-

I had mine off last night, slid a long square metal bar over the handle of the ratchet and that did it.

If a shop did yours last time, they are just on way to tight, and you may have to relent and let a shop do the job- or at least have them reset the torque to 80 so you can get them off yourself
Most techs blast them on with the air gun- so about 100+ ft lbs of torque

NOTE: Did you get the 2 screws on the rotor hub loose yet?
If not- just head to the shop now

 

impact out of the question?

 

can the impact driver be used for bolts as well as screws?

 

well yeah...same principle...

 

Instead of WD40, use liquid wrench. Or use a wrench with a another wrench to achieve more leverage.

 

thanks

 

Had one stuck the other day- used the wrench on a wrench- no luck
put the handle from the floor jack over the ratchet handle and 4 foot leverage took it right off!
Someone used and impact air gun to install with no concern last time!

Liquid wrench good stuff- I just figure everyone has a can of wd, and anything helps in a pinch

 

Be careful with penetrating oil around the wheel bearing. Having said that, soak the bolts for like a half hour, then get a blow torch, and EVENLY heat up the surrounding metal (again, stay away from them bearings). Then try again with a 6-point closed-end wrench (a 12-point might damage the bolts). If that still dont work, go to an impact driver. Don't stand, and bounce on the wrench; you WILL break a bolt head! Either way, once you get them out, replace the bolts with new ones (and use anti-sieze on them this time).

 

how about an extension, breaker bar for leverage.