Repairing a Faulty Dewalt DCH253 Cordless SDS drill that's not hammering or locking the change lever

This Dewalt dch253 sds drill is not hamming and also the selector lever is not locking into the hammer drill mode correctly. The pinball has failed inside and needs replaced but there also a bad oil leak inside that needs cleaned out and the housing is damaged. #Dewalt #dewaltdrill #dewaltsds #dewaltrepair #dewalttools #dch253 #tools #powertool #repairs #toolrepair #makita #repair #deandohertygreaser #diy #powertools #deandoherty #toolfix #asmr