Angle grinder repair, replacement of brushes and bearings

Repair of an angle grinder, replacement of brushes and bearings. The Chinese analogue of the Makita GA5030 angle grinder after 5 years of operation. How to replace it yourself brushes in an angle grinder. How to replace bearings in an angle grinder yourself. Maintenance of an angle grinder. Chinese angle grinder after five years of operation. Should I buy a Chinese angle grinder?
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