DeWalt Air Leak / Seal Failure

Dust or debris escapes from around the lid or seams of the vacuum

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Possible Causes

Damaged lid gasket, Warped tank or canister rim, Missing or mis-seated filter, Cracked housing

How to Fix / Troubleshooting

Safety: Remove the battery and avoid breathing fine dust; wear a dust mask if necessary.

  • Inspect gaskets: Check the main lid or canister gasket for tears, flattening, or missing sections. Replace if damaged.
  • Check filter seating: Ensure the cartridge or HEPA filter is installed correctly and locked in place per DeWalt instructions.
  • Examine tank rim: Look for warping or cracks where the lid seals. Minor warping may be improved by evenly tightening latches; severe damage requires tank replacement.
  • Clean mating surfaces: Wipe dust from gasket and rim to ensure a tight seal.
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Repair Difficulty

Easy 2/5

Required Part

Lid Gasket
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