cub VS-62U016 Si Installation After mi Important: Each time the TOMS senor is changed or disassembled, iris MANDATORY to replace the TOMS sensor washer, nut, crew, and valve core accessories (use only CUB service component kits designed for TOMS sensor) to ensure proper sealing. For Clamp-in Metal Valve Sen sore: 1. Peck up the valve cap, valve nut and washer from the valve stem and keep the grommet an valve stem 2.