This is a Wessex Retractable Pivot Arm – H-Type used to repair your existing Wessex or Ellard garage door. This arm was fitted to retractable garage doors with a single spring each side until 1998. This item is also known in the trade as a Link Arm.
Remove the spring.
With the door closed unscrew the existing arm and refit the new arm.
Re-fit the spring and balance the door.
We recommend replacing the springs at the same time to ensure you have a problem free door thereafter. If you are not confident doing this work yourself then book an appointment for one of our Engineers to do it for you.