my brushed motor is slipping

[b1anthony]

so after hitting a pot hole, i noticed a stranger than usual high pitched rattle to the normal squeel of the motor.
but only when accelerating.

i took it home and noticed that when I hold down the brakes I can throttle it up and here the motor spinning even though the wheel is stationary
something must have come loose, can I take it apart and tighten up or get a new well i do know

it seems to run fine on the flats but im sure it will not climb hills like she used to

please help

[Tommycat]

Make and model of motor could help a lot.

Regards,
T.C.