Impact drill hammer function is bad, how to do
The principle is the impact of hammer hammer motor drives a reciprocating movement of the piston, the piston through the air pushes the "hammer" reciprocating impact.
There is a hammer piston failure. In addition, if the motor turns without hammering, it may be a problem with the gear;
Check the butter, there are many reasons for the impact, such as impact wear, O ring wear, and so on, so it is recommended to the professional maintenance shop maintenance;It may be that the handle screw has gone off, or the eccentric shaft is broken;
