Electric Drill Trigger Switch Wiring Diagram

Here is how the reversing switch should be connected.

Electric drill trigger switch wiring diagram. In case anyone is interested i finally found a wiring diagram but it s not b d. 4 terminal switch wiring 4 terminal switches have two wires leading from the motor and two wires leading from the power cord. Two speed and on off trigger switches page 9 in line cordless tool switches page 11. As you can see in the attached diagram there is a switch that reverses direction of the motor sending the opposite polarity to the appropriate brush.

Attached are two pdfs i may be able to save the drill if i can fix the switch will post back later. For more information on making sure a power switch problem is correctly diagnosed please take a look at our troubleshooting guide. Therefore the switch between 4 and 2 will short cut the triac in this case allowing the full ac voltage to pass to the motor. A switch with 5 amp contacts should hold up fine.

The schematic shows an ac source but the connections are the same for a battery drill. I went to ebay and found a model number for a 3 8 vsr and used that at the milwaukee site. On the other side you do not want to power the motor triac when you don t touch the trigger. I am having a very hard time with the wiring however.

For a power switch repair 101 article click here. Makita switch wiring diagram schematic power tool bosch drill diagrams fm 4514 electric hot wire test a cordless motor craftsman hammer repair 101 ac without trigger circuit for. Your drill uses pulse width modulation pwm to control the speed. This article is a 101 level repair guide that explains general steps for replacing a power switch in power tools and other machinery.

If a bad power switch is making a tool or machine act up replacing the old switch with a new one is usually the right fix. Below is an example diagram of a 4 terminal switch. Power tool switches 1 tyco electronics power tool switches dimensions are shown for. I basically want to turn it into a winch.

The cold or negative wires are the filled in black power cord wire and the corresponding left hand side motor wire. You can buy board soft starter at https www ti. In this case the switch between 1 and 4 will be open. Forum rh540m sds max tool wiring specifics bosch professional.