Maintenance
Repair
120 MagneMotion
Rockwell Automation Publication MMI-UM037A-EN-P - April 2020
3. Place the vehicle on a non-metallic work surface with the magnet array down. Keep
the magnet array at least three feet away from metal objects and tools.
4. Hold the bearing nut underneath the carriage in place with a 13 mm thin open ended
wrench. Unscrew and remove the nut and washer for the concentric bearing being
removed (on the top of the carriage) and store them for reuse.
5. Remove the concentric bearing from the bottom of carriage and discard appropriately.
6. Insert the replacement concentric bearing from the bottom of the carriage.
7. Place the washer over the bearing post on top of the carriage.
NOTE: Make sure that all washers are placed on top of the carriage below the top
nut. Do not reassemble with washers on the underside of the carriage.
8. Thread the nut onto the bearing over the washer on top of the carriage.
9. Hold the bearing nut underneath the carriage in place with a 13 mm thin open ended
wrench while using a 13 mm torque wrench to tighten the nut on the top of the carriage
to 19 N•m [14 ft•lb] and apply Loctite 290.
NOTE: The Loctite must cure for 3 hours at 22° C [72° F] before using the vehicle.
10. Repeat this procedure on the companion concentric bearing, if it is also being
replaced.
11. If eccentric bearings are to be replaced on this vehicle, see Replace Eccentric Bearings
on page 121.
12. If the vehicle is ready to be installed on the rail, see Replace Precision Rail Vehicles on
page 104.
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