How to Fix My Remote Control Car

Put the clean cloth down on a work surface. Turn the R/C car upside down and put it on the clean cloth. Remove the servo case from the side of the drive shaft using the jeweler's Phillips screwdriver. Put the screws aside.

Remove the servo horn that is attached to the output shaft of the servo casing.

Clean around the outside of the servo casing with the lint-free cloth. Clean around the area where the shaft exits the servo case with the cotton swab.

Unscrew the top of the servo case from the bottom using the jeweler's Phillips screwdriver. Put the screws aside.

Press down on the servo-output shaft to keep the gear set in the bottom of the case as you separate the top of the servo case from the bottom.

Remove the gear set from out of the bottom of the case and put it down on the clean cloth. Remove the tiny shafts that the gears spin and put them aside in the order they are removed so that they can be reassembled later.

Clean out all the grease from the top and bottom of the servo case using first the lint-free cloth and then as many cotton swabs as necessary.

Install the new servo gear set into the bottom of the servo case. Put the tiny shafts back onto the gears. Put the top of the servo case back onto the bottom of the servo case and screw them together.

Reattach the servo horn to the output shaft of the servo casing.

Reattach the servo case to the bottom of the R/C car and screw it back into position. Turn the R/C car over and place it on the floor. Grab the R/C car controller and make the car zoom away.