dissasembling and cleaning rear derailleur

4 August 2013

Bottom Bracket 
Fixed cup too tight. Cannot remove it. Lots of WD40, but it wont budge.

Derallieur

 

Removed the 2 brass bolts that fix the derailleur (hanger) to the bike frame;

And then removed the 1 brass bolt that fixes it to the bottom of the leaver (below the pivot)

Here it is, ready for cleaning. Note; all bolts face outwards. The solid bar moves the mechanism (to change gears), the spring maintains tension of the wheel.

outside of rear derailleur

inside of rear derailleur

Spring attachment to bar

removed the derailleur lever

Took apart the bottom jockey wheel. The very bottom section of the cage is on the outside of the assembly

Cleaned up jockey wheel. going to need to figure out how to lubricate the bearings in this.

Now its time to dissasemble the top section of the derailleur.

The linkage between the spring and the derallieur is a bent spoke (spoke more obvious in photo after this one). I started trying to open this, but quickly decided just to leave it attached.

It took a while to undo one of the 2 bolts holding the cage to the wheel; there is a screw slot that I needed to turn while holding the bolt, the slot was not very deep and was difficult to turn, I may have damaged the slot and should try to replace it.