Any, even the most expensive rotary hammer can ever fail. As a rule, breakdowns of this type of construction equipment are associated with harsh operating conditions and a large amount of dust falling into its mechanisms.
Punching
In order to understand the causes of a sudden breakdown of the tool, it should be disassembled and the problem examined from the inside. Parsing a punch is easy enough if you follow the appropriate instructions. Fortunately, the tool designs of different manufacturers are almost the same.
So, the analysis must begin with the top node of the tool. First you need to remove the rubber tip, then the washer, spring and metal ball. Behind the ball are the screws that hold the body and the handle overlay (if any).
The next task is to disconnect the stator wires and remove the brush holder, then disconnect the gearbox and housing. The latter procedure can be considered the most important, since it is through the formed gap that the internal parts of the device will be removed and removed.
