4000 Switch Machine - Alstom

Hand Throw LeverPerform the following procedure to remove and replace the hand throw lever. No adjustmentsare required; however, a hand crank is required. Set-up instructions, when required, are given inthe removal and replacement procedure. Follow procedure in the sequence given to avoidequipment damage. Refer to Figure 6-7 while performing the following procedure.WARNINGPower to switch machine must be cut off at control room beforeperforming this removal or replacement procedure.Removal Procedure1. Remove motor end and center cover.2. Note position of switch machine (normal, mid-stroke, reverse). If in normal or reverseposition, insert hand crank and rotate until switch machine is in mid-stroke.3. Disengage hand throw from latch stand and position hand throw in mid-position whileremoving the two socket head cap screws attaching hand throw to machine housing.4. Separate and remove hand throw assembly from switch machine housing.Replacement Procedure1. With replacement hand throw module and switch machine in the mid-position, inserthand throw into switch machine making sure that the hand throw spur gear meshesproperly with switch machine drive gears and mounting flange on hand throw ispositioned flush to switch housing.2. Align mounting holes of hand throw to switch housing and attach to machine housingusing two socket head cap screws.3. Secure the hand throw into latch stand, in position noted in step 3 of removal procedure.4. Using hand crank, position switch machine as noted in step 2 of removal procedure.5. Replace motor end and center cover.6. Operate switch machine to verify proper operation.P2444, Rev. Jan/07 6-10ALSTOM Signaling Inc.