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7. Remove the 3 screws mounting each of the two bearing block assemblies to the top of the
x-beam and remove the beam.
8. Apply red loctite (MS222) to the threads of the button head socket screws and reinstall the
x-beam assembly to the bearing block assemblies. Tighten the button head socket screws to the
torque specications.
9. Remove the x-home optical switch mounting bracket with the sensor mounted from the old beam
and install it in the replacement beam using the installation procedures prescribed in “X-Home
Optical Switch Assembly Replacement”.
10. Install the end caps on both ends of the x-beam assembly.
11. If you do not have any further work on the machine, reinstall all of the covers in the reverse order
that you removed them from the machine.
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