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 new shock or strut appears shorter than the unit removed from the vehicle.
- The original mounting stud nut does not thread correctly or damages the new KYB shock/strut upper mounting stud threads.
- Over-tightening the upper strut shaft mounting nut causes damage.
- The strut started leaking fluid from the upper seal shortly after installation.
- Hydraulic Fluid Leak: Causes.