BMX Chain Sprocket Replacement

ID: 160804

Description: This guide will show you how to change a BMX...

Steps:

1. Flip the bike upside down in a position where the back wheel can spin freely.
2. Gather your tools.

3. Get a ratchet, socket, extension and connect the extension to the socket and the ratchet to the extension.
4. Insert the socket with the extension in the peg till it hits the end.
5. Loosen the nut inside the peg.
6. Repeat these steps for the other side.

7. Push the wheel forward till it stops, and there is no gap.

8. Grab the chain
9. Slightly pull the chain to the side, away and back from the wheel
10. Make sure that it isn't attached to the wheel driver (spikes that chain sits on normally to make bike wheel move)
11. Make sure to keep an eye out for your fingers because you can get your hand caught between the chain and the wheel

12. Grab the chain by the sprocket on the bottom of the bike
13. Pick it up and slightly pull to the side to remove the chain from the sprocket
14. Spin bike cranks to create clearance to move chain away from the sprocket and off the cranks
15. Make sure to keep an eye out for your fingers because you can get your hand caught between the chain and the wheel

16. Grab the Allen key that fits the compression bold
17. Loosen the compression bold
18. Completely remove the compression bold from the cranks

19. Use the Allen key that fits the smaller bolt to loosen the cranks.
20. Loosen the bolt on the cranks.
21. Do not remove the bolt.

22. Pull crank with the sprocket off the crank spindle.
23. Loosen the bolt that is holding sprocket (optional depending if cranks have the bolt).
24. Remove the sprocket from crank.

25. Place the new sprocket on the cranks with the corresponding hole to hold the sprocket still.
26. Tighten the bolt to keep the sprocket in place (optional depending on bike cranks).
27. Push the cranks back onto the crank spindle still it stops moving and the other crank isn't pushed out.
28. Make sure that the crank is placed well and balanced.

29. Thread in the crank compression bolt by hand on the cranks.
30. Use the Allen wrench to tighten the compression bolt and compress the crank and the crank spindle together.

31. Use the Allen key to tighten the smaller compression bolt and prevent the cranks from spinning.

32. Spin the crank with the sprocket to the position where the pedal is close to the peg.
33. Grab the chain.
34. Hover over the pedal to where you can place the chain back onto the sprocket.
35. Make sure that the chain is placed correctly on the sprocket.
36. Make sure to keep an eye out for your fingers because you can get your hand caught between the chain and the wheel.

37. Place the chain back on the the wheel drive on the back wheel.
38. Spin the back wheel backwards so the chain can get rotation and sit correctly on the driver.
39. Make sure to keep an eye out for your fingers because you can get your hand caught between the chain and the wheel.

40. Pull the back wheel till it stops moving.
41. Align the wheel so it wont hit either side of the frame.

42. Use the socket with ratchet and the extension to tighten the nut inside the peg slightly, which will allow the wheel to move slightly if needed.
43. Do the same thing on the other side.
44. Once the wheel is aligned, tighten one side slightly and then tighten the other side slightly as well.
45. Keep doing this process until the nuts are tightened enough to they won't move without the use of the ratchet.

46. Flip the bike right side up and the bike is ready to go.