The way I replace those calipers is like this. I will pinch off the rubber line going to the caliper. I will then Crack loose the two 14 mm bolts. After cracked loose, remove the 12 mm bolt going to the caliper for the line. Once that bolt is removed, then I take the two 14 mm bolts out. Once you have them off, the caliper will come right off.
Then I install in reverse order. But before I unpinch the line, I have someone go in the truck. I crack the bleeder open, Then have them slowly apply pressure down on the brake pedal. Once they start applying pressure, I unpinch the line and the brake pedal will go all the way to the floor. Tell him to hold it. Close the bleeder, have him pump the pedal a few times, then apply pressure again, while applying pressure, crack the bleeder again and the pedal will go to the floor. DO NOT PUMP the pedal while the bleeder is open. Only press down. If you pump it will draw air in, you are trying to get air out.
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