In this video I restore the Bosch GBH 2-24 rotary hammer. It had a broken mode switch. After disassembly I found the plastic on the stator melted due to overheating. But surprisingly the stator still worked. I also replaced one bearing on the rotor. All other parts were in good condition.

00:00 Inspection
00:21 Dismantling the perforator
05:28 Impact bolt repair
06:04 Rotor bearing replacement
06:26 Checking the stator
06:41 Stator repair
07:36 Hammer drill assembly
17:09 Checking work