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Disconnect the spindle encoder cable from the readhead.

Remove the bolts [1].

Remove the readhead [2].

Remove the bolts [3].

Remove the NCE readhead mount [4].

Slide the halves of the T-0116 [1] around the NCE ring.

Install the shoulder bolts [3] through the cross bar [4]. 

Turn the bolt [1] to pull the NCE ring from the hub.

NOTE: Hold the T-0116 crossbar from rotating with the 1" open end wrench while pulling the NCE ring.

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 [3] and torque the bolts [3]

Fasten the readhead [6] to the mount with use two WASHER FLAT 0.170ID X 0.400OD and two bolts [5]. Leave these bolts hand tight to set the air gap between the readhead and the ring.   

Align the previously marked high spot on the NCE ring with the readhead.

Use the plastic shim that came with the replacement encoder [2] to set the air gap between the NCE ring and the readhead.

Tighten the readhead mounting bolts [1]. 

Connect the spindle encoder cable.

Install previously removed enclosure covers.