Use the hot plate to heat the replacement NCE ring to 300°F (150°C).
IMPORTANT: Do not exceed 320°F (160°C) when heating the NCE ring. Overheating the NCE ring will cause permanent damage.
Slip the hot NCE ring over the hub until the shoulder on the NCE ring is up against the hub.
Allow the NCE ring to cool.
Using a dial indicator measure the runout of the NCE ring and mark the high spot. The TIR must not exceed 0.002".
Install the NCE readhead mount  and torque the bolts 
Fasten the readhead  to the mount with use two WASHER FLAT 0.170ID X 0.400OD and two bolts . Leave these bolts hand tight to set the air gap between the readhead and the ring.