Take the wheels off,turn the front wheel lug nuts until they are loose, lift the front of the car, and only then put it on jackstands safely. Then, unfasten a bolt and nut that secures the wheel speed sensor to the bracket and pull the brake hose off the strut's bracket. Remove the nut of link to the stabilizer bar, and strut-to-knuckle bolts by using hammer and punch on the bolts. Cautiously take the strut apart from the 
Steering Knuckle, do not over stretch the inner CV joint and do not allow the knuckle to fall to the outside as this will damage the brake hose and ABS speed sensor wiring if the car is equipped with them. Unscrew the cowl cover to expose the upper section of the struts: supporting the strut and spring assembly with your hand, unscrew the three upper mounting bolts and then pull the assembly from the fenderwell. Curiously examine the strut body for evidence of fluid leakage, dents, splits, and other types of damage that will need repair or replacement and looks for chips or cracks in the protective coating of the coil spring, and signs of cuts, hardness, or other types of deterioration on the spring seat. If any problem is identified, go to the next step of the disassembly of the strut. For installation, insert the strut assembly into the fader well and fit the upper mounting bolts then tight them to factory recommended torque and preferably in twos given the weight and of the strut assembly. Place the steering knuckle into the Subaru strut flange, put the bolts into the holes, and screw on the nuts, torque to the specified value. Perform the following actions to complete the removal process: tighten the stabilizer bar link nut, then tighten the wheel lug nuts to the specified torque; the front end alignment check and adjustment might also be required.