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Keyless Chuck Loosening Problem.

I use a Hitachi DV 18DGL battery drill for a lot of my work. It is very good and the battery lasts a long time and charges up quickly when needed.

BUT, when in use the keyless chuck comes loose and the drill bit does not turn due to a poor hold. I have two of these drills and the same problem exists with both chucks. Is it a design problem or a bad batch of chucks? I do not know. Other makes of keyless chucks that I have used over the years hold the drill bits securely and do not come loose even if using a hammer action.

Is there a solution? Perhaps I should pour some fine sand into the chucks.

Z.

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0 kfh over 5 years ago

I have a similar problem with a Milwaukee, usually last about 2 or 3 holes on hammer action before becoming loose but one tightened again it usually lasts much longer. I tighten by hand so not the problem mentioned above. It has happened since new. I mentioned it to a rep at a show and he said it was the first time he had heard of it and offered to change it under warrantee but I never bothered as it would be too much messing around.
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0 kfh over 5 years ago

I have a similar problem with a Milwaukee, usually last about 2 or 3 holes on hammer action before becoming loose but one tightened again it usually lasts much longer. I tighten by hand so not the problem mentioned above. It has happened since new. I mentioned it to a rep at a show and he said it was the first time he had heard of it and offered to change it under warrantee but I never bothered as it would be too much messing around.
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Keyless Chuck Loosening Problem.

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