First: we need to take it off the bike. Don't forget that they thread in relation to the pedaling motion, so one is left threaded.
Now: Clean all that nasty grease off inside and out (pipe cleaners or cotton swabs are really handy here...) and give everything a good going over with some degreaser. Same with the pedal body. Use a brush and degreaser on all the exterior surfaces to get everything clean. Then rinse everything and dry (compressed air is handy here if you have it).
Important note: Don't do too much dis-assembly to the pedal body! There are springs in there that have a LOT of tension on them and would be very difficult to put it all back to together correctly. The brush & cleaner will get it clean...
Last: Apply fresh grease liberally to the axle and re-install it. Make sure to grease threads on everything to ease future removal. Lubricate moving parts on the pedal body. Lubricate the contact surface to the cleat.
|Clean, happy, and ready for grease and re-assembly!|
If you find something that looks broken or seriously worn- get it checked out. It could be a serious safety issue.
How often to do this, you ask? How about we say once per season for most bikes? Twice, if you are racking up serious (2500 miles or more) mileage. So 10 or 20 minutes per year.
And more happy bikes!