First step to repairing RIDGID drill. All it takes is getting the case off...
Remove the backplate.
Using a Torx T20 screwdriver, remove the four screws attaching the back plate.
Remove the drill handle.
Using the Phillips #2 screwdriver, remove the five screws attaching the drill handle to the body.
Remove the gear casing from the body.
Using the Philips #2 screwdriver, remove the four screws attaching the gear casing to the body.