driver smokes

[jim berg]

Repairing a makita 6901d cordless impact driver, when under a heavy load,it smokes and smells burning,still works under a light load. would that be the motor?

[Mark]

Hi Jim,

It could be the motor or the switch. You can usually determine which one by opening up the drill and inspecting the parts. Quite often you can visually see which one has overheated and started to smoke. Sometimes you can identify the offending part by simply smelling it. Once you determine which one is the bad part you can replace it.

The switch is part #651343-9.

The motor is part #629581-1.

Both parts are available from http://ereplacementparts.com.

Good luck with your repair!

-Mark