Connect a hoist to the spindle motor . Remove the (4) screws . Remove the spindle motor.
Remove the washers and screws  from the proximity sensor bracket . Install the proximity sensor onto the replacement TRP assembly with the (2) screws . Discard the sensor bracket . Install the air hose fitting  and the hose clamp  from the used TRP assembly onto the replacement TRP assembly.Remove the bolts  from the used TRP assembly. Remove the used TRP assembly and install the replacement TRP assembly. Install the spindle motor assembly.
Make sure that Parameter 278:6 SINGLE CLAMP SWITCH is set to "1."