Eliminate the cylinder retainer ring. Use a wrench-like ring remover to eliminate the retaining ring through the lock cylinder. Set the retainer ring someplace you will discover it afterwards when reassembling the lock. The method will depend on the model! For Quickset keypads, you usually go ahead and take battery https://caidenpziov.blogzet.com/rumored-buzz-on-commercial-lock-change-41341557