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  1. Start by making sure the post is fully extended
    • Start by making sure the post is fully extended

    • Remove the saddle cradle using a T25 Torx driver

  2. Remove the cable tower at the bottom of the post using a 15mm wrench. Turn counter-clockwise to remove
    • Remove the cable tower at the bottom of the post using a 15mm wrench. Turn counter-clockwise to remove

    • If needed, clamp the seatpost in softjaws or use a strap wench to hold the post

    • Next, remove the bottom cap of the post using a Park Tool FR5 or other Shimano compatible cassette tool. Turn counter-clockwise to loosen

    • Clamp the seatpost in softjaws or use a strap wench to hold the post

    • Remove the cap

    • Moving to the head of the post, insert the head of the post into the soft jaws of the vise

    • Using an M10 hex wrench break the screw free by turning counter-clockwise and loosen it slightly, but do not remove

    • The main spring is located under this screw, so caution must me used when removing the screw

    • The head, and only the head of the post must be supported while removing this screw. Supporting the main tube or shaft of the post while turning this screw may result in damage/binding of the seatpost keys

    • While supporting the cap and post, carefully unthread the cap and remove the spring

    • It is recommended to leave the seatpost in the vise for this step

    • The spring is under preload and will eject with force if not supported while removing. Use caution!

    • Remove the spring

    • The spring is not directional, so either side can go up or down

    • Wiggle the post head while pulling to remove

    • Slide the outer tube up to remove it from the post

    • Remove the main seal from the outer tube by turning it counter-clockwise

    • Now we will remove the pillar assembly from the inner tube of the seat post

    • Using your T25 of another tool that fits, actuate the post just as a cable would if the post were installed

    • While pulling the cable tower down to release the locking mechanism, carefully slide the pillar out of the inner tube

    • Be careful here as the balls that lock the post may fall out once released. To prevent this, you can wrap the assembly in a rag before removal to contain the balls

    • With pillar removed from the inner tube, use a magnet to keep the balls from disappearing

    • If needed, remove the brass post keys with a pick

    • The bushing at the bottom of the pillar can be replaced by removing the four T15 Torx screws at the bottom of the post, then removing the cap and sliding the bushing off

    • Slide the busing off

    • Use a magnet to capture the ball at the bottom of the pillar if needed

    • If you need to disassemble the pillar, re-install the 4 screws without the cap

    • Using the 4 screws at the bottom of the pillar as flats, gently clamp them in your vise

    • Using an M10 hex wrench, turn the pillar cap counter-clockwise to loosen

    • Remove the cap

    • Push the cable holder from the bottom to slide the cam assembly out of the pillar

    • Use an M3 hex wrench and any tool that will fit into the cable slot to un-thread the cable holder from the spoke

    • If needed, remove the set screw to access and remove the spoke

    • You may need to clamp the cam in the soft jaws to loosen the set screw. Be careful not to mar the cam or cam bushing

    • Turn the set screw counter-clockwise to loosen

    • Slide the spoke out of the cam

    • To remove the bushings from the inner tube, remove the C-clip at the bottom and slide the bushings and O-rings off

    • A 150mm post is shown here, 125mm posts will only use 2 bushings.

    • Ready to re-assemble? Then go here

Conclusion

Thanks for reading, now get out there and ride!

The Hive

Member since: 12/05/2012

51 Guides authored

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