4000 Switch Machine - Alstom

• View modules for signs of wear or damaged parts. The following can be replaced in thefield:Amplifier5:1 GearboxMotor30:1 GearboxMain DrivePoint Detector SwitchPoint Detector Rod Point DetectorLatch StandLock RodHand ThrowSwitchesNote: Method of removal and replacement of modules is covered in Section 6,“Corrective Maintenance".• Causes for replacement of modules:− Amplifier - Refer to Section 5.− Motor - Replace if the RED light on the amplifier module is lit and reset functionsdo not clear fault indication.− Point Detector - Replace if parts are damaged such that point indication will notoccur, if parts are worn or broken causing false indications due to wear or brokenparts, or parts are out of calibration.− Lock Rod - Replace if rod is bent, fractured or has wear on rubbing surfaces,which would preclude smooth sliding.− Point Detector Rod - Replace if the rod is bent, will not slide smoothly inbushings, or lock nuts will not stay locked.− Hand Throw Lever - Replace if gear teeth are broken or show excessive wear orthe assembly does not move freely.P2444, Rev. Jan/07 4-8ALSTOM Signaling Inc.