Open the front door on your Howard Miller grandfather clock. Look inside the clock and find the three pulleys just beneath the face of the clock. Each pulley has a foam block that holds it snug to the top of the clock.
Hang the pendulum from the pendulum guide inside the clock. Hang the three weights on the pulleys. Each weight is marked with its pulley location of left, middle and right.
Set the time on your clock and push the pendulum to start your Howard Miller grandfather clock movement. Allow the clock to run for about 24 hours.
Reach inside the clock to remove the foam blocks from above each pulley to release them. The 24-hour time period allows the cables to loosen their grip on the foam that held the pulleys in place, according to the manufacturer.