When a garbage disposal leaks from the bottom motor housing specifically during a dishwasher cycle, it indicates a failure of the internal shaft seal combined with pressurized dishwasher drainage. Because modern dishwashers pump wastewater forcefully through the disposal's side inlet port, water under pressure bypasses worn internal seals and exits through the bottom casing. Prerequisite: Stop running the dishwasher to prevent water damage to your cabinet base. Verification: Confirm that water drips from the bottom center casing during dishwasher operation and prepare to replace the unit.
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