Your Shimano Tiagra crankset is part of a series of bicycle components designed for sport and fitness riding. The 2-piece crankset consists of a left and right arm linked by a spindle. This spindle remains permanently attached to the right-side arm. A bolt joins the left-side arm to the other end of the spindle. Disassembling your Tiagra crankset offers an ideal opportunity to clean it of grime accumulated through normal use.
- Skill level:
- Moderately Easy
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Things you need
- 5mm hex key
- Shimano TL-FC16 tool or equivalent
- Flat blade screwdriver
- Rubber shop mallet
Locate the pinch bolt at the end of the left Tiagra crank arm. Use a 5mm hex key to loosen this bolt.
Insert the nub on the side of the TL-FC16 tool, or its equivalent, into the end cap that secures the left arm to the spindle.
Twist the end cap tool counterclockwise, loosening the end cap. Remove the end cap.
Note the seam at the end of the left crank arm, where the crank arm attaches to the spindle. A piece called the "stopper plate" resides within this seam.
Use a flat blade screwdriver and gently wedge the plate into the up position, away from the crank arm.
Tug on the left Tiagra crank arm to detach it from the spindle. Set the arm aside.
Tap the exposed end of the crank spindle with a rubber shop mallet to dislodge the right Tiagra crank arm.
Tug on the right crank arm to remove it from the bicycle.
Tips and warnings
- Some models of Tiagra cranksets may have a spacer or two between the left crank arm and the frame of the bicycle. Removal of the crankset is the same, but keep a close eye out for these spacers to prevent possibly losing them.
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