MTB Maintenence: How to overhaul mountain bike pedals

Picture of MTB Maintenence: How to overhaul mountain bike pedals
Following my MTB Maintenance series of Instructables, this installment is an in depth guide on how to strip, grease and rebuild the pedals on your mountain bike. The pedals in question in this Instructable are Crank Brothers 5050x with cone style bearings. This this Instructable only shows how to overhaul the pedals with the more common type of bearing, the cup and cone style, so if you have sealed cartridge bearings look elsewhere!, so lets get started!
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Step 1: What you need.

Picture of What you need.
As pedal overhauling is as complicated as hub overhauling, you need a selection of tools to get the job done, as follows:

A pedal
Paintbrush with stiff bristles
15mm spanner
12mm and 9/16 sockets
Socket attachment extender
4 containers
A cloth

After you have gathered these items, we can continue...

Step 2: Removing the dust cap.

Picture of Removing the dust cap.
To get to the bolts holding the axle in place you first need to remove the dust caps, this can be done easily with a regular kitchen knife by inserting it into the cap and prying it off, some other types of pedals have a cap where you have to put the sharp tip of a knife into the side to pop it off. Put the dust cap aside for re-installation later, after this has been done we can proceed with the removal of the axle.

Step 3: Removing the axle.

Picture of Removing the axle.
Now that you have the dust cap off you can undo the bolts holding the axle in place so you can remove it to get to the bearings, assemble the ratchet with the extender and the 12mm socket and place it inside the pedal where the dust cap was. If you look inside the pedal you should be able to see the bolt you are trying to get at, and using the 15mm spanner on the pedal thread flats, undo the bolt and shake it out of the pedal body, a washer will come out as well, set this aside, then take the 9/16 socket and attach it to the wrench, place it inside the pedal body to unbolt the cone, then CAREFULLY take the cone out of the pedal body without loosing any bearings, and move on to the next step.
Aron3133 years ago
I just got a banshee scream and the pedals make a little click sound. Im not worried about it nor do i want to spend $80 to get new pedals but i just wanted to see if you knew anything about it.
Aron3133 years ago

Check out this video of mountian biking.
buenasolas4 years ago
Great instructable. My crank bros pedals are new, but this will come in handy when it's time to rebuild them. Thanks!
I'm doing this with some old odyssey pedals, and i used simple green which worked well.
sharlston5 years ago
Great Ible, Idea: Chain Cleaning And Lubricating
metalex175 years ago
Hi, some time ago I have cleaned my old odyssey pedals and I use WD40 oil to clean the bearings and It´s work so good, i put the bearings, cone, and another little metallic stuff into a plastic cup, I pour a trickle of oil (WD40 of course) and I let this do her work, later i put the grease like your way, assembly and ready, I comment the WD40 because the cone and the bearings some times have rust and the cloth don´t remove it.

(excluse the English, Im from Mex)
wd40 is great for cleaning and removing rust as you say, but it is not a good lubricant for reassembly, make sure you use plenty of grease after wiping parts dry after cleaning. Bedbugg is correct, for sure!
bedbugg2 (author)  metalex175 years ago
Yeah, WD40 is really good for getting rid of all the old grease and the rust, white spirit works quite good as well, you have just got to make sure that the bearings and cones are completely free of WD40 before you regrease it and put it all back together.
sharlston5 years ago
if you can instead if grease use motor oil or 3 in 1 oil and do it about once a month
although you have to do it more often the oedals turn more freely
sharlston5 years ago
is this crucial?
bedbugg2 (author)  sharlston5 years ago
Well, if your pedals have play in them, or it is time that they needed a service, then yes.
it turns out my pedals dosent have bearings in them do they all?
bedbugg2 (author)  sharlston5 years ago
They all usually have bearings in, if they don't, then its worth replacing them as they cannot be overhauled.
well its a tapered cone where the point is facing towards yourself and theres around 5 slits init
bedbugg2 (author)  sharlston5 years ago
Are you sure there aren't any bearings in there? take a pic of the pedal and send it to me if you can.
it turns out my diamond back ones have bearings ill take a another look
ok ill take a look on some other diamondback bmx pedals aswell cs i think there the same

 i might be able to get a picture tommorw