Shopsmith Forums

One very distinguishing 'feature' of a Mark VII is the 'vacuum' driven by a shaft from the 'back' end of the motor. This thread describes the disassembly of the vacuum housing etc. from the motor pan.

The vacuum housing is secured to the motor pan end with two large headed screws. This housing is plastic and shows some cracking. After all it is almost a half century old.

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The exit port(s) are screwed to the side of the motor pan.

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The plastic parts are also held together by these clips.

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The impeller is secured to the motor shaft by a castle nut and a cotter pin.

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After removing the cotter pin, the castle nut was removed. An external tooth lock washer and flat washer were behind the nut.

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After removing the housing and exit ports, the impeller was removed. It was stubborn to pull off the shaft.

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Behind the impeller was a flat washer and a retaining ring and a back plate.

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Apparently a PO decided the impeller was too loose on the shaft. These explain why the impeller did not easily slide off the shaft.

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This thread is linked to from a Mark VII refurbishing thread https://forum.shopsmith.com/viewtopic.php?t=11373