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What is the date code on that grinder?

If the breaker tripped, my swag is that the windings overheated and burned out. Any burning smell or smoke? Is there a manual thermal switch? It's not the capacitor. The start cap is removed from the run circuit at start-up. What brand of motor? Does the rotor turn freely by hand?

Packard Craftsman Motor 115.7556 - Epilogue There are many paths to the same destination. This series of posts showed the basic route I generally follow to refurbish these motors. There are other ways to accomplish the same objective. Simple jigs make tasks easier. There were a couple unusual...

Packard Craftsman Motor 115.7556 - Part 10, Installing the Base and Cord Lay the cord across the base to estimate the length required to reach the switch from the cord opening. Strip off the outer casing of the cord. Apply a light coat of Super Lube grease in the grommet bore and on the end...

Packard Craftsman Motor 115.7556 - Part 9, Installing the Stator Cover Band So, this 3450 rpm motor seems to be an oddball. I would have expected it to be the same size as the 1750 rpm motor, but it is smaller. The rotor shaft is ~12" versus ~12-1/2". The rotor body, the stator and the stator...

Packard Craftsman Motor 115.7556 - Part 8, Installing the Rotor and Fan-Side End Frame Heat one of the bearings for about five minutes and slide it onto the fan side of the rotor. Insert the rotor into the stator. Install the fan-side end frame onto the rotor. and align the thru-bolt...

Packard Craftsman Motor 115.7556 - Part 7, Assembling Stator and Switch-Side End Frame Set the switch-side end frame adjacent to the stator and install the Klixon thermal switch. Set the centrifugal switch assembly inside the end frame. Insert the screws into the terminal board and...

Packard Craftsman Motor 115.7556 - Part 6, Assembly Prep Install the air cone into the fan-side end frame. Tap (4-40) the holes for the thermal switch badge and Install the badge with 4-40 screws. The holes do not need to be drilled. Insert 8-32 x 1" set screws into the new thru-holes...

No brushes in that motor. Those are Emerson-made sleeve bearing motors very similar to this one. @Maui, if you must open that one up, it's very easy.

Packard Craftsman Motor 115.7556 - Part 5, Cleaning the Small Parts There are a variety of small parts in this motor. Most will get sonic cleaned. Place all small parts in a jar and run them in the sonic cleaner for a couple rounds. Bearings will get cleaned separately After sonic...

Open up the plug and verify the wire/cord did not get pulled out or twisted. Verify that hot and neutral are in the correct pole. Pass & Seymour plug

Something amiss in the plug? Hot and neutral swapped? An errant strand sorting out in plug?

Packard Craftsman Motor 115.7556 - Part 4, Cleaning the Stator Cover Band This stator cover band has some light to moderate rust. Scrub the band with Grez-Off and a small brush, rinse and dry. Bump out any dents. This band has a small dent near the switch. Mark the dent and draw...

Packard Craftsman Motor 115.7556 - Part 3, Cleaning Painted Parts Vacuum any sawdust still on any parts. Scrub all painted parts with Grez-Off and small brushes. Use Barkeepers Friend if lightly rusted. Rinse and dry. Apply paste wax to all painted parts and buff. The end frame...

Packard Craftsman Motor 115.7556 - Part 2, Cleaning the Stator and Rotor Use compressed air to blow sawdust off the stator. Use compressed air to blow sawdust off the rotor. Use dry brushes, if necessary, to clean any residual sawdust from the stator assembly. Use dry brushes...

This is the Packard Craftsman motor I got from logical. It is a model 115.7556, 1/2 hp, 3450 rpm with a date code of March 1954. Based on the amount of sawdust inside, I'm presume it came off of a table saw. It is virtually identical to a models 115.6963 and 115.7429, which are also a 1/2 hp...