Over time, your electric
motors will accumulate a lot of gunk both inside and outside. Not only are dirty motors unattractive, they hurt performance.
A dirty comm and brushes will reduce the flow of electricity and rob power. Plus, dirt on the armatures will cause them to
go out of balance which will make your motors vibrate. Vibrations also rob power and ruin your bushings / bearings.
So, what can you do? For the answer, read on.
If your motors are
such that they can be opened then your job is much easier. However, if they are 'sealed', then your options are limited.
Luckily, there is one
way to totally clean the inside of your motor and help seat the brushes onto the comm - water dipping. Dipping the motor is
simply running the motor on a nearly dead battery pack under water for 1 - 2 minutes (1-2 minutes for a new motor, after that
run it for only several seconds because you don't want to wear away too much comm or brush material). That's right, under
water. The force of water rushing around inside the motor will remove any dirt that's inside. Additionally, running the motor
under water will quickly seat the brushes onto the comm. You might be wondering if this is bad for your bushings? If
they are lubricated, then the answer is no. Remember, oil and water don't mix so your bushings will remain lubricated.
Make sure you use just
plain water with nothing added (no soap or detergent!!). Be careful, the motors will likely splash water everywhere.
Once you’ve dipped your motors, let them
air dry overnight. Next, use any quality electric motor cleaner and thoroughly clean your motor inside and out. Be careful,
this cleaner is highly flammable and bad to breath. Consider doing this step out doors. Once the cleaner evaporates,
it’s time to oil your bushings or bearings. I recommend 3-in-1 oil, however any similar oil will work. Don’t
over-oil, it will just attract dirt. In addition, be careful not to get any oil into the motor because it will contaminate
the brushes and comm.
to reinstall your motors. Not only do your motors look like new, they also run like new (or better). In fact, I recommend
dipping your motors when they are brand new in order to seat the brushes. It really makes a difference.