First, how to convert the electric hammer and drill？

There is a switch knob for the electric hammer and drill, the one to the left is the hammer drilling function, the button in the middle is the hammer chisel function, this is 180 degrees of rotation, suitable for different work.

Electric drill is the use of electricity for power drilling machine, is the largest use of electric tools in the product, can work in a small space, the switch can control the chuck positive and negative rotation, electric drill only has rotary energy, that is, can only drill can not impact, so only in the density of small or low hardness of the object drilling, such as wood, plastic or some metal, etc. It can also be used as a screwdriver with low speed, and now it has been developed a lot of practical functions.

The working principle of the electric drill is that the small-capacity motor drives the connecting rod, and the connecting rod drives the gear to increase the power of the drill, so that the drill can scrape the surface of the object and finally penetrate the object, that is, the motor drives the transmission gear to increase the rotational strength of the drill, so that the drill can easily drill through the object.

Second, how to replace the carbon brush of the electric hammer and drill?

1, the first step: disassemble the machine.

2, the second step: take off the brush holder.

3. Step 3: Remove the back cover.

4, the fourth step: change the carbon brush.

5, the fifth step: new carbon brush installation.

6. Step 6: Install the back cover.

7. Step 7: Reinstall the brush holder.

Step 8: Install the machine.

Third, what are the precautions for replacing carbon brushes with electric hammer and drill

1, before the machine must be clear, to ensure that every screw is intact disassembly.

2. When installing the carbon brush and carbon brush cover, be sure to ensure that the square back cover of the brush holder holds the power contact sheet and then buckle it.