Installing your crank arms and pedals, be sure to make sure they are oriented in opposite directions. Be certain the left crank arm is on the left with the left pedal and the right crank arm is on the right with the right pedal. Thread the pedals in by hand to start, carefully, you should not have to force them. Once they are threaded in properly to start and you are certain they are properly aligned, you can use a wrench to finish tightening them.
To install your crank arms, you then just tighten the crank arm bolt. However, if they are installed at the wrong orientation to each other, you will need a crank puller tool to remove one, rotate it, and reinstall it. Please see the video at the bottom of this page, it illustrates how to use it.
Unfortunately, this is a common assembly error. To avoid it, the left pedal and crank arm must be installed on the left hand side. The left pedal is reverse thread (turn counter clockwise by hand to install). The right pedal and right crank arm must be installed on the right side (normal thread, turn clockwise by hand to install) .Begin threading the pedals by hand, once screwing in smoothly by hand, then you can tighten with a wrench.
Often if installed improperly, and it results in the crank arm being stripped, the crank arm will need to be replaced. Typically, the pedals are ok, because they have steel threads, where as the crank arm is aluminum and the threads are softer and often damaged beyond repair. Depending on the bike & which side is stripped, you may be able to replace just one. For non-drive side cranks (L) You can order single replacements (make sure it matches your other crank, diamond style or square shown below). The drive side (R)/ Side with chainring, generally come in a set of both Left + Right cranks.
If replacing left or right crank, PLEASE VERIFY, is yours SQUARE or DIAMOND. The new part needs to be the same as the one you have. Or alternatively,both can be replaced, but can be more expensive and you will need a crank puller tool (about $10.00).
500 Series, 700 Series, LMT'D & Roadster Ghost left crank arm diamond:
500 Series, 700 Series & Roadster Ghost Replacement Crankset:
Option 1 (if your chain ring is in good condition) Full Crankset (must swap over existing chainring)
Option 2 (If your chain ring is bent/damaged) Full Crankset with chain ring for 7 or 8 speed bike - Be sure to select 45T when checking out. This is slightly larger than the 44T, but will work with the same chain (If you get a much larger one, you may need a longer chain).
Full Crankset with chain ring for 7 or 8 speed bike - Be sure to select 45T when checking out. This is slightly larger than the 44T, but will work with the same chain (If you get a much larger one, you may need a longer chain).
If you have additional questions, please contact us and include info on which bike you have & a photo of the crank arm.
To remove the cranks, review this video: