Gearbox and all types of actuators can be installed and their settings can be done.
Other services like Stem Extension, sand blasting and painting, non-destructive tests (NDT), including radiographic test (RT), penetrant test (PT), magnetic particle test (MT), ultrasonic test (UT), analysis by PMI, hardness, etc. changing the valve trim and End Connection are KSP activities. Casting defects detected by NDT, according to material standards are being repaired by welding. Heat treatment and other process will be done, in case of necessity.
In addition lubricant or sealant grease injection, replacing o-rings, packings and and gaskets to suitable materials are possible in KSP.