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Routine Maintenance? Are there any routine maintenance procedures for my B&D 7447 belt sander? I noticed today while using it that there appears to be an oil leak, and it smells kind of like gear oil. Is this a problem? Thanks for your time. T. Rourke

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  • David Ford
    David Ford May 11, 2010

    I tried the B&D website and didn't find the tool you listed. Please check again and I will look at a breakdown and help you. But yes there different PM procedures. Let me know

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This is an older model tool, not many parts are available. The problem will continue if you don't address it. The reduction geartrain is "permanently" (not so much) lubricated from the factory with a heavy weight grease. With age, time and enough use these less-expensive gearboxes get hot and the heavier solids separate from the oil base, causing the oily smell you are experiencing and presence of oil.

If you are mechanically inclined; I attached a link to the exploded diagram, you can open the geartrain, clean all the old stuff up and if the heat wasn't because the parts are visibly worn; then use a moly-based bearing grease from your local autoparts store (comes in a can, looks like a waxy paste). Coat the teeth so the grease fills the tooth gaps, but don't get carried away. Re-assemble and you should be good to go.

Honestly, this is an inexpensive sander, Ryobi makes a value priced model that works great if you choose to replace it verse service it.

Here's the diagram link

http://www.blackanddeckerservicenet.com/Products/DocumentView.aspx?productid=18190&typeId=1379&documentId=1235

Posted on Mar 01, 2009

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