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Hello Ken,
Sorry you are having to get out and get under this weekend.
I know of no way to test the calipers other than visually !
Jack the car up onto good jack stands. (You will need someone in the car) Take the wheels off and get down next to one of the calipers. Turn the rotor and get a feel for force reguired to turn it. I sue a 1/2 inch socket breaker bar on the lug studs to help turning. Have someone step on the brake and make sure you cannot turn the rotor while the brakes are on. Have assistant release the brake and try to turn the rotor. If it sticks and turns hard try brakes on and off a couple of times to be sure and if it is still sticking, it will have to come off and be overhauled.
I read that the piston can be freed by repeated sticking and unsticking but I do not believe in short cuts with brakes. Also If one caliper has sticking pistons, I would overhaul at least both on that axle. But the car is up in the air, you are dirty already, why not do all four.
I expect that you know to use only brake fluid or genuine brake cleaner when doing this work. Also brake fluid is nasty and I have recently taken to wearing surgical gloves when using the stuff.
Good luck
MrC
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MrC
Nothing good has ever been accomplished without enthusiasm !
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