On a rear-wheel-drive vehicle, look at the brake pads and replace them if they are worn. Indeed, gently push the caliper pistons back into the caliper with your hand or a C-clamp, keeping a wood block on the piston to avoid eating any imprecaution. Be sure not to tear the boots on the caliper guide pins when you attach the caliper to the disc brake adapter. Make sure the caliper guide pins are inserted into the caliper adapter which will clear the caliper bosses and then push the caliper onto the brake pads and onto the adapter. Always check that the guide pin bolts are threaded correctly before putting the caliper in place. Place the caliper on top of the mounting holes, secure the guide pin bolts using a torque wrench at 60 Nm (44 ft. lbs.) and hold the guide pins so they don't turn as you tighten. After that, put in the banjo bolt joining the hose to the caliper, placing new washers on each side of the hose fitting and tighten it to a torque of 50 Nm (37 ft. lbs.). Install and fasten the wheel and tire assembly to the vehicle, screwing the mounting nuts to 150 Nm (110 ft. lbs.) or 190 Nm (140 ft. lbs.) for cops. Drop the vehicle, take out the post holding tool and link the battery negative cable to the post. Performing this part of the experiment well is very important. Don't forget to bleed the base brake hydraulic system and, when done, take the vehicle on a road test including a few stops where the brakes, once stationary, allow the brake lining to bed into the drums.