
11
GALLIUM PRO DISC: 8. Rear Derailleur Hanger Adjustment
1. Ensure that the derailleur hanger is aligned.
2. Use Derailleur Hanger Alignment Gauge
like
Park Tool Item #DAG-2 or #DAG-2.2
.
For any assistance, visit Park Tool’s website:
parktool.com/product/derailleur-hanger-
alignment-gauge-dag-2
Also see instructions from Naild
for rear assembly in Appendix (p.27).