Honestly, this is an inexpensive sander, Ryobi makes a value priced model that works great if you choose to replace it verse service it. Re-assemble and you should be good to go. Coat the teeth so the grease fills the tooth gaps, but don't get carried away. 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). Touch devices users use touch & swipe gestures. 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. 06/19 Begin typing to search, use arrow keys to navigate, Enter to select. The reduction geartrain is "permanently" (not so much) lubricated from the factory with a heavy weight grease. The problem will continue if you don't address it. This is an older model tool, not many parts are available. Find many great new & used options and get the best deals for Black & Decker Mod 7447 1/3 H.p.
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