Hilti Overheating Due to Restricted Cooling

Vacuum body or handle becomes excessively hot to the touch during normal use

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Blocked cooling vents, Continuous heavy-duty use without rest, Clogged filters, Internal dust buildup around motor

Safety first: Remove the battery and allow the vacuum to cool completely before inspection.

Clean vents: Use a brush and compressed air to clear all cooling vents.
Service filters: Clean or replace filters to restore proper airflow.
Adjust duty cycle: Avoid running the vacuum at maximum power continuously; allow periodic cool-down breaks.
Service if persistent: If overheating continues with clean vents and filters, internal dust buildup or motor issues may require professional cleaning or replacement.

Medium 3/5

Motor Assembly or Cooling Vent Components

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