Description : Describe the general maintenance issues of the horizontal axis WPPs.
Last Answer : General Maintenance Issues of Horizontal Axis WPPs: 1. Gearbox failure. 2. Misalignment between generator and gearbox. 3. Problems related to lubrication. 4. Variation among the components by ... charging gear oil, brake pads, filters, bearings, sensors, actuators. 6. Bearing failure issue.