How to Remove a Shimano LX HollowTech Crank Arm

Written by matthew ferguson
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Part of Shimano's Deore LX line of bicycle components, a Hollowtech LX crank includes a pair of "arms" used to rotate the drive train. A pedal is attached to the end of each arm. When pedalling, the arms, crank sprockets, and chain all rotate, driving the bicycle forward. The two Deore LX crank arms are joined through the frame of the bicycle by a spindle, which is permanently attached to one of side of the Deore LX crankset. Either arm can be removed for servicing, which may include cleaning or greasing of moving parts.

Skill level:
Moderately Easy

Things you need

  • TL-FC16 tool
  • 5mm hex wrench

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  1. 1

    Fit the nub on the side of the TL-FC16 tool into the hollow of the cap on the non-drive side Shimano LX crank arm. The drive side of the bicycle includes the chain and sprockets. The non-drive side does not include these features.

  2. 2

    Twist the TL-FC16 tool to the left to loosen the crank arm cap. Unscrew the cap and set it aside.

  3. 3

    Observe the bolt at the end of the non-drive side crank arm, close by where the crank arm cap was located. Loosen the bolt, using a 5mm hex wrench.

  4. 4

    Pull the non-drive side Shimano Hollowtech LX crank arm from the side of the bicycle, disengaging it from the end of the spindle.

  5. 5

    Relocate to the drive side of the bicycle. Grab any portion of the drive side Shimano Hollowtech LX crank arm and pull it away from the bicycle.

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