Viking Husqvarna, which manufactures the Viking sewing machine, has been in business for over a century, and remains a major player in the sewing machine industry. Its history includes cast iron sewing machines, computerised machines, and sewing machines that utilise patterns at the touch of the button. The Viking sewing machine remains in use even in today's high-technology era. Sewing machine owners can benefit from knowing how to repair their own Viking machine. Replacing the motor involves some dissassembly, removal of the old motor, and installation of a new one.
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Understand the structure and design of the machine's motor system. Locate its two main components: the rotor and the stator. The rotor is responsible for turning the motor and comprises the centre of the engine assembly, while the stator is comprised of insulating windings through which run a magnetic field when powered by an electrical source.
Begin disassembling the motor assembly by removing the motor bracket. Remove the screws with a screwdriver or wrench from the "L"-shaped or "K"-shaped bracket. Loosen the screws attached to the motor pulley and separate the pulley from the rest of the assembly. Put the screws aside for when you reassemble the device later.
Remove the plastic strain relief on the electrical wire. Some wires are retained by a metal grommet instead of a strain relief; in this case, leave the grommet in place.
Locate the long screws, secured with nuts, on the casting. The casting will be composed of two parts. Separate these parts after removing the nuts and screws. Unscrew the carbon caps and take out the spring and carbon brush located beneath the caps.
Remove the other casting piece by removing the two nuts securing the long metal coil in place. Carefully pull off the coil, release the rotor, and take out the motor assembly.
Position the new motor and secure it by attaching the two nuts. Set the rotor and the coil of the new motor in place. Reattach the two-part casting by screwing it down. Replace the motor bracket. Run the Viking sewing machine to verify that the procedure has been performed properly and the machine is in good working order.
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