Do not use an air or electric impact wrench to tighten the upper mounting nut on the piston rod. This can make the torque higher than recommended and cause damage. Correct tightening is accomplished by holding the piston rod with a wrench or special tool (not vice grips or pliers) at the machined shoulder & using a torque wrench set to the vehicle manufacturer’s specification.
More Technical Tips
- The shock stud appears too short or noises occur after installation.
- Does any fluid need to be put into the strut housing when replacing a cartridge-style strut?
- The replacement shock/strut has a shorter upper mounting stud.
- Over-tightening the upper strut shaft mounting nut causes damage.
- The original mounting stud nut does not thread correctly or damages the new KYB shock/strut upper mounting stud threads.