QI have a rock crawler with a brushed motor. During my last crawling session, the motor lost power.
The truck would still steer, but it lost both forward and
reverse drive. Is it possible that I fried the motor?
AIt’s possible that the motor is fried, but there could be a simpler solution to the problem. First, check the
wires and connectors that run to the motor. If there are any
cuts or frays in the wires, they need to be replaced. If the
motor has small bullet connectors between the motor and
speed control, disconnect and reconnect them to make
sure they are seated properly. If the wiring is good, then
check the motor. Unscrew the motor from the chassis and
inspect the brushes and springs. Sometimes a brush will
hang and lose contact with the commutator, or the face of
the brush will break off completely. If the brushes are good,
pop the can off of the motor, and check the armature.
Sometimes a rock or screw will get caught in the armature
and mechanically lock the armature to the can. If all else
fails, you may have to replace the motor.
There are a few reasons why a brushed motor can stop
working. The most common reason is a hung brush.
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