4000 Switch Machine - Alstom

1. Position the spoon gauge into the necked down portion of the point-detector rod (trackside). Use either the ¼-inch end of gauge or the 3/8-inch end (whichever is required bythe railroad). Refer to Figure 3-11.Note: For narrow-notch lock rods, if a ¼-inch obstruction test is done for pointdetection, the lock rod must be disconnected (floated). For wide-notch lock rods,if the lock rod is adjusted properly, the rod does not have to be disconnected.2. Adjust position of point-detector rod at the lug end by adjusting the inner jam nut.Adjust nut until pressure of the spoon gauge against the point-detector pivot arm on thepoint-detector system module engages the track-side point-detector switch lever.Continue adjustment until the indication contacts of the rotary cam switch open(outward position). If configured with latchout, continue adjusting until the latchout dogof the point detector system engages (approximately 3/4 more of a turn), as shown inFigure 3-11.Note: Check the indication contact status of the cam switch (open or closed circuitcondition) using a meter on TB-2 or TB-3 in accordance with the field wiring.3. Tighten and lock the jam nuts that hold this adjustment. Remove the spoon gauge. Ifconfigured with latchout, verify that the cam switch indication contacts are still open.Release the latchout condition by applying a light force to the spring end of the latchoutdog.4. Crank the machine to the draw the point-detector rod into the machine.5. Position the spoon gauge in the necked down portion of the point-detector rod (fieldside). Use either the ¼-inch end of gauge or the 3/8-inch end (as required by therailroad).6. Adjust by loosening the nut and slave (1-1/8-inch open wrenches required) of the pointdetectorbar and then by screwing in or out the free end of the rod (slave). Adjust thenut until the pressure of the spoon gauge against the point-detector pivot arm on thepoint-detector system module engages the field side point-detector switch lever.Continue the adjustment until the cam switch indication contacts open (outwardposition). If configured with latchout, continue adjusting until the latchout dog of thepoint-detector system engages (approximately a additional 3/4 turn).Note: Check cam switch indication contact status (open or closed circuit condition)using a meter on TB-2 or TB-3 in accordance with the field wiring for location.7. Hold this position by screwing in the free end of point-detector rod. Remove the spoongauge and release the latched out condition by applying a light force to the spring end ofthe latchout dog.8. After making adjustments in both directions, manually the operate machine back andforth a few times. Check that the point-detector pivot arm engages the associated trackP2444, Rev. Jan/07 3-13ALSTOM Signaling Inc.