How to replace your old jockey wheel. Which pulley goes where?

If your old jockey wheels are worn or broken they will make an unpleasant noise and may affect gear shifting. In the worst case scenario they can even damage your derailleur. How to replace old jockey wheel? The task may look difficult but fear not as we will guide you through this process step by step.
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00:00 - Start
00:07 - Support our channel on Patreon
00:15 - Welcome
00:30 - Are all the jockey wheels this same?
00:42 - Finding which Shimano jockey wheel is top and which is bottom
01:07 - Finding which Sram jockey wheel is top and which is bottom
01:25 - Tools required for jockey wheels replacement
01:56 - Preparation
02:42 - Replacing bottom pulley
03:38 - Replacing top jockey wheel
04:48 - Final words