i took mine a part tonight and may of cleaned it a bit to well .
the unit was leaking oil and was so watery . I thought it be a good idea to rebuild it after many years of owning it . so order parts and a tub of bosch grease/lube. but thinking I may of over cleaned it now . as i use a rag and took out all the old black oily grease out of the hammer head assembly . and the new lube is a clear yellows lube in a tube . also more of a lube then grease like wheel bearing . I have tried doing a google search but really found any true info .other then applying a film of grease to the moving parts .I do fine repairs saying to replace seal if it leaks black oil .but nothing as to how or how much oil/grease to reapply if you clean the unit. (it was like a pool of black oil I rag out) .more then the lube I apply tonight would form if it breaks down. so after doing the nose cone section back on . Id better try to find out more before I Finish assembly .only to burn out or break this hammer drill .
i