Removed old fan wheel and motor. The set screw for the fan was frozen and could not be removed. Ordered new motor kit and fan from the Pros which arrived in 2 days (not expedited!). Removed band with vibration isolators from the old motor and attached it and supplied foam strip to the new motor. Noticed new motor had an oil port but no instructions or what grade of oil was needed. No clues on the installation web site. Decided to leave it alone. Attached the fan using Locktite on the set screw and reassembled the unit to the range. Powered up and all appears good.