In this comprehensive guide, we cover OLTC tapchangers information and demonstrate the complete bearing plate assembly replacement process. Our technical expert explains the importance of proper bearing plate maintenance, which is vital to prevent mechanical binding during tap changes. We provide detailed instructions for safe and effective replacement procedures. First, we outline the necessary lockout procedures. We then detach the coupling and extract the worn bearing plate. Lubrication points are highlighted, and we show how to correctly seat the new bearing plate, ensuring that the driving mechanism operates without excessive friction. Regular inspection of these parts is key to avoiding unplanned outages.