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How to replace an Acroprint motor
 

How to replace and Acroprint 125 and Acroprint 150 motor.
Photos below.

  • 1) Unplug it, remove the case
  • 2) Tools needed: 
    Size 2 philips screwdriver, Size 3 Philips screwdriver
    Thin flat blade screwdriver, a new time clock ribbon
    two wire nuts, new Acroprint motor and cam


    Steps:
  • Cut the motor wires about an inch away from the motor
  • Remove and discard the ribbon
  • Remove the minute hand.  Note that there is a locknut underneath the hand, and a very small, specialized screw for the hand.
  • Remove the 4 face screws and the face.  This exposes the frame.
  • Using the allen wrench, remove the cam.
    --  Note:  You will be recycling the allen screw again.
  • It's okay to force the cam position, the motor is going away, anyway.
  • Remove the 4 large screws on the fork. 
  • Wack the back side of the motor frame assembly to release it.
  • That big gear controls the minute alignment.
    --  It is adjustable after you put it back together to center the minutes
         if you need to.
  • See the allen set screws, it's easy to figure out.
  • Remove the motor screws.  Note that the large screw goes at the bottom.
  • Replace the motor.  Replace the cam.
  • When replacing the cam, make the cam flush with the end of the motor. 
  • We are compensating for other wear in the machine at this time.
                          Nearly.....Done!
  • Put the motor assembly back on, put the big screws back in and make them tight.
  • Shorten the motor wires, install the wire nuts.  Put the face back on.
  • Once you have the face plate back on, replace the old ribbon
  • Take a test stamp.  Now press the hour hand back on, then attach the minute hand.

 Put 'er on test for 2 hours.  If it's on time, it's done.  If not, replace it.

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