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Hollowtech Bottom Bracket Replacement

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  1. Hollowtech Bottom Bracket Replacement, Bottom Bracket: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Secure the bicycle using a bicycle repair stand or wall.

  2. Hollowtech Bottom Bracket Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use pliers to remove the spring clip from the chain's master link clip.

    • Remove the master link plate, plate and pin assembly, and finally the chain.

  3. Hollowtech Bottom Bracket Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Use a 10mm Allen key socket and ratchet to loosen the left crank arm by twisting counter clockwise.

    • Remove the left crank arm.

    • Remove the spacer(s) and washer.

  4. Hollowtech Bottom Bracket Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Either push or pull the crank arm fully out exposing the left bottom bracket.

  5. Hollowtech Bottom Bracket Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use Park Tool's BBT-27.3 16 notch bottom bracket tool to loosen the left bottom bracket by twisting counter clockwise.

    • Remove the bottom bracket.

  6. Hollowtech Bottom Bracket Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use Park Tool's BBT-27.3 16 notch bottom bracket tool to loosen the right bottom bracket by twisting counter clockwise.

    • Remove the bottom bracket.

  7. Hollowtech Bottom Bracket Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Hollowtech Bottom Bracket Replacement: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Carefully pull out the bottom bracket shell.

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Congratulations, you have completed the guide. To reassemble the crankset, follow these instructions in reverse order. Make sure to grease the threads, bottom bracket shell, and crankset accordingly. In addition, torque down the crank arm (38-41Nm) and bottom bracket (40-50Nm) to the manufacturer's recommended specification.

Agustin Sernas

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CSU Los Angeles, Team 13-3, Ribeiro Fall 2023 crwdns2935289:0CSU Los Angeles, Team 13-3, Ribeiro Fall 2023crwdne2935289:0

CSULA-RIBEIRO-F23S13G3

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