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Old 11th Apr 2022, 8:03 pm   #1
Hampus
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Default Malfunctioning B&D drill

I have an older Black & Decker hammer drill (1970s) that is not hammering anymore. Upon disassembly I found the "disc with cams" on the output shaft was spining freely on the shaft. I can't see how that would work? Am I missing something or am I right in that it was once press fitted to the shaft and now have come loose?

Picture A and B shows the position of said disc. On picture C I have lifted it off. Picture D shows the stationary counterpart that the disc is supposed to bounce against.
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Old 11th Apr 2022, 8:22 pm   #2
60 oldjohn
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Default Re: Malfunctioning B&D drill

Does this help? https://www.sparepartsworld.co.uk/browse/8562/4

Edit, https://www.sparepartsworld.co.uk/pr...D144R%2FTYPE_1 Im not sure which model but should think all very alike.

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Last edited by 60 oldjohn; 11th Apr 2022 at 8:37 pm.
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Old 11th Apr 2022, 8:34 pm   #3
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Default Re: Malfunctioning B&D drill

Sheared key with part remaining in shaft and part in the disc?
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Old 10th May 2022, 11:17 pm   #4
Hampus
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Default Re: Malfunctioning B&D drill

Thanks for your suggestions,

Unfortunately I could not find any remains of any broken key, even after taking it to work and checking it with microscope. Exploded view drawings shows disc and shaft as a solid part that is not supposed to be possibly to separate. I found a seller that sell this part but it not worth buying to an older, "standard quality" machine like this.

I took this as an opportunity to buy a better drill.
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