Bent Derailleur Hanger Fix

If those adjustments don t fix your problem it s more than likely you have a bent derailleur hanger.

Bent derailleur hanger fix.

For this repair you will need a derailleur hanger alignment gauge such as the dag 2 2 from park tool. Your bike can shift poorly for a lot of reasons one of them being a bent derailleur hanger today s tech tuesday shows you how to fix this common problem and get your ride s shifting back up to. As long as it s only a few degrees off you should be able to straighten it. If the hanger is bent the mech cage won t line up with the chain.

The problem solvers universal derailleur hanger is a handy thing to keep on hand and even bring on epic off road rides or extended tours because it makes it relatively easy to fix a damaged bent derailleur hanger which is a pretty common breakdown. Make a note of the direction it needs to be adjusted. An alternative is to remove the derailleur with a 5mm allen wrench and then use an adjustable crescent wrench to apply leverage to the hanger. What usually happens even a perfectly straight derailleur hanger won t fix things with a bent derailleur.

Reinstall your rear derailleur paying attention to its bracket stop and how it mounts on the hanger. Then take hold of the upper part of the derailleur with both hands cupping it right around the back to give the derailleur as much support as. Grab the derailleur body not the pulley wheels and apply firm constant pressure to bend it in the required direction. Next make sure to not over torque the rear derailleur as this could misalign the hanger again.

Refer to your cellphone photos from step 3 if needed. The problem with the crescent wrench is that you just need to be careful that you tighten the wrench down tight on the hanger and make sure that the jaws of the wrench extend past the mounting hole for the derailleur. Another less accurate option is to use a crescent wrench to straighten the bent hanger. Sometimes the derailleur gets bent a little as well.

First judge how you believe the hanger to be bent.