Replacement Motor Resistor For L&R Master & Mastermatic Watch Cleaning Machine. This is a new motor resistor for replacing the bad or broken/damaged original motor resistor used for regulating the max speed of the motor on these precision cleaning machines. Will work with L&R Master & Mastermatic Watch Cleaning Machines with front panels like the one pictured.  If your machine has front panels like the one pictured and castings like the ones pictured, then this heater unit should be a perfect replacement.

NOTE:  Not ALL L&R watch cleaning machines have these resistors installed in them.  Although it shouldn't be a problem to add them, I generally recommend that you not install these into cleaning machines that did not originally come with one already installed.

These are a direct replacement to the originals and can be installed exactly as the originals had been!

To install your new motor resistor , it is required that you completely disassemble the motor and remove the coil assembly from the casting.  This will allow you to remove and install the resistor unobstructed.  Once the coil assembly has been freed from the casting, unsolder the wiring on both terminals of the old resistor.  Next you carefully remove the brush holders from the leads of the old resistor.  Once completely detached, set the old resistor aside.  Replace the brush holders onto the leads of the new resistor, cutting the leads to the proper length.  Then solder the wiring from the coil assembly onto the terminals of the new resistor exactly as they were on the old resistor.  You are done installing the new resistor and can now reassemble the motor!

By placing an order you understand that it is your responsibility to ensure that this replacement meets your anticipated needs.  I do not accept returns unless the item arrives to you in a condition that is not as described.

This listing is for ONE motor resistor only. Pictures of front panel, original resistor, coil assembly, castings and other parts are for reference only.  If you have any questions, please don't hesitate to send me a message!

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See my other listings for more L&R watch cleaning machine parts and MORE!