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Yes you can.
Make sure the transformer is rated for more power than the drill label states so that you don't burn up the transformer if you stick the drill bit.
For instance, if the drill is rated for 5 amps at 230 volts you should get a 1500 watt transformer. 230 x 5= 1150 watts; the next common size up is 1500 watts. You don't want an 1200 watt if it is available.
Transformers are also rated in KVA [Killovolt-amps] so the same transformer would be 1.5 KVA.
Do the math for your drill and save future problems. If a transformer doesn't have a rating with real numbers, avoid it. There are lots of really cheap ones on the market that you will regret buying.
Not all bits for hammer drills are the same as the slots in the sides of the shanks are different between makes . There is a standard between hilti and ramset drill bits but other makers have different ideas Check out the shanks of your drill bits and look for the slot that holds in the bit.
you have me stumped on this one. The tool you have is a spline shank hammer and it should accept all standard spline bits and also hammer iron that is made for these. Is it possible that the Bosch bit has a burr on the splines not allowing it to lock? I have checked the Hitachi site and found no reason it would not work. I will continue checking though.
This is an older, discontinued model Makita that only works as a hammer drill. It does not have the dial selector the newer models have to switch from 'drill' to 'hammer drill' to just 'hammer'. If you need, there's a parts breakdown and user manual available at:
if the tool still runs and you have inserted the proper bit, what I would try first is jamming the bit into the concrete to see if the striker is stuck and if still no hammer it would need to be taken apart and rebuilt with all new o rings and seals. if you try this yourself make sure you buy the small bottle of oil and some lube the the seals.
I order parts for my Bosch tools at WWW.toolpartsdirect.com. They have the parts lists also so it is easy to find what you need. Don't forget to order some bosch grease for your tool because you will need to carefully wash-out all the old grease with metal bits. Good luck with you repair. Enjoy