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Image 1/1: Bearings can be replaced on BSA threaded, PF30 and BB30 bottom brackets
  • Launched in late 2014, generation 3 BBs feature replaceable bearings

  • Bearings can be replaced on BSA threaded, PF30 and BB30 bottom brackets

    • Due to fit constraints BB92 bearings cannot be replaced as the bearing itself presses into the frame

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Image 1/3: Slide the tool through the BB cup until it sits on the lip of the bearing Image 2/3: Tap the tool to remove the bearing Image 3/3: Tap the tool to remove the bearing
  • To remove bearings, use a Park Tool headset cup removal tool

  • Slide the tool through the BB cup until it sits on the lip of the bearing

  • Tap the tool to remove the bearing

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Image 1/2: Clean the inside of the cup with alcohol Image 2/2: Clean the inside of the cup with alcohol
  • Remove the bearing and seal from the cup

  • Clean the inside of the cup with alcohol

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Image 1/3: Lightly press a new 6806 bearing into the cup Image 2/3: Lightly press a new 6806 bearing into the cup Image 3/3: Lightly press a new 6806 bearing into the cup
  • To install the new bearing, lightly grease the inside of the cup

  • Lightly press a new 6806 bearing into the cup

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Image 1/1: Be sure the bearing goes in straight
  • Using a BB30 bearing press, press the bearing into the cup

  • Be sure the bearing goes in straight

  • Here we are using an Enduro tool, but tools for BB30/6806 bearings are offered by many major tool manufacturers

  • Press the bearing in until it stops against the back of the BB cup

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Image 1/3: The red side of the seal will face out Image 2/3: Working around the outer diameter of the seal, tuck the lip of the seal into the groove in the BB cup Image 3/3: Working around the outer diameter of the seal, tuck the lip of the seal into the groove in the BB cup
  • Install the outer seal by pressing it into the cup

    • The red side of the seal will face out

  • Working around the outer diameter of the seal, tuck the lip of the seal into the groove in the BB cup

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Image 1/1: Wiggling the seal side to side in the cup can make it easier to seat the seal
  • It may be necessary to use a tool to ensure the seal is fully seated in the groove

  • Wiggling the seal side to side in the cup can make it easier to seat the seal

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Conclusion

Thanks for reading, now get out there and ride!

The Hive

Member since: 12/05/2012

51 Guides authored

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