Models 5E, 5F, 5G & 5H Electric Switch Machines: Single ... - Alstom

Corrective MaintenanceTable 6–7. Switch Machine Disassembly and Assembly Procedure (Cont.)StepAction56(Cont.)7. Hand throw switch machine to reverse: hand throw lever fully resting inlatch stand (note 2).8. Measure the displacement of cam bar. The displacement must be 9/16”or greater.9. If cam bar displacement from mid-stroke is less than 9/16” in eitherdirection (normal or reverse), the throw bar can possibly be back drivenby the force from the point. The point should be immediately clampedclosed and the switch machine should be inspected for wear, damage,or improper timing.57 Install the box-style bearing (45) over the throw bar and into the frame.Tighten the bearing with the two screws and washers.58 Bend the lock tabs (one tab down, one tab up) on the washers (43) over oneflat side of the mounting screws (44).P1293, Rev. Jun/07 6–30 Alstom Signaling Inc.