Hopefully this can help the next guy...
Have a Makita 6012HD cordless drill that had a bad switch. Switch would cut out frequently and sometimes not work at all. Took the drill apart. Solder joints all good, etc. Switch just worn out... Come to this website and found some parts. Thought I would make this drill a keyless chuck version as well.... (I had an early keyed version)
Parts came and within 30 minutes I was done. Hardest thing was getting the old chuck off...(Remember, reverse threads on the retaining screw!)
Switch # 531043-6 14.75
Chuck # 763184-2 22.75
Throw in shipping and I 'm at approximately $45 for a like new drill.
OK, I know what your thinking...yes, new drills with more features are out there, but I couldn't just pitch it....Had to get the keyless chuck too....kind of a "pimp my drill" :D Pappy