Cordless Impact Wrench Restoration DeWALT DCF 809

DeWalt DCF809 screwdriver
The exterior is severely worn, the LED light is missing, the chuck shakes greatly, and the startup noise is loud.
After disassembling, it was found that the internal dust blocked the heat dissipation holes, affecting the heat dissipation of the stator and causing the stator coil to burn; the internal water intrusion caused the stator to rust severely
The stator silicon steel sheet was sandblasted to remove rust, and 0.5mm copper wire was rewound
The gearbox shell was sandblasted, re-polished and painted, and the severely worn shaft sleeve was replaced
After repair, the function was basically restored, and the power was strong
The noise was slightly loud due to wear.