Question about Bosch HCBG500, 5 Pc Industrial Hammer Drill Bit Set

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Throwing oil I own a Bosch "Bull Dog" hammer drill, model #11228VSR. I loaned it to my neighbor a few years ago and noticed later that it now leaks oil out around the rubber gasket near shaft. I believe he over heated something. It still works, but when it warms up it leaks oil around the rubber gasket near the body and drill shaft. Any help on a self fix would be appreciated. Thanks.

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  • Anonymous Jan 07, 2008

    Ya drill is doing the exact same thing....



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I really dont worry about the leak near the shaft because with out the oil in the shaft there is a possibility that the shaft can jam. even dewalt new hammer when you purchase it come with the grease/lube like a toothpaste size. this is to lube the bits for the purpose the bit/shaft can move freely & also can hammer freely. our you can do is to dis-assemble the front end sleeve & remove the excess oil.will i agree weather can also change the viscosity of the oil. varsol cleaner can do the trick available at walmart.

Posted on Jun 07, 2008


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