Welcome, in this quick tip video we will guide you through the installation of a behind the rotor Type 1 mechanical seal in Viking pumps with the U-Plus™ bracket. Before installation, ensure the casing, bracket bushing, idler, head, idler pin, and rotor shaft are free of any debris or wear. Replace any worn components. Using an arbor press, install a new lip seal into the bracket until it is flush with the bracket face. Reinstall the seal spacer. Lubricate and install the stationary seal seat into the bracket bore with the lapped side facing out. Avoid touching the seal face directly.

Place a brass or hardwood bar into the port opening to keep the pump from turning. Loosen and remove the lock nut. Remove and discard the lock washer. Loosen the bearing housing set screws. Loosen and remove the bearing housing. Remove the bearing spacer collar. The collar may have come out with the bearing housing. Remove the half- round rings. Next, remove the stainless-steel window guards from the bracket. Loosen and remove the head cap screws. Remove the head by tilting it backward to prevent the idler from falling off the idler pin. Remove and discard the head gasket.