In this video, I am restoring a Bosch GBH 2-26 rotary hammer that did not turn on. After disassembly, I found other faults. I repaired some parts, and replaced others with new ones.
00:00 Troubleshooting
01:24 Replacement of brush holders
03:07 Dismantling the perforator
09:52 Grnding the electric motor manifold
11:29 Hammer drill assembly
21:57 Result