72 | Trivel.com
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES SOLUTION
Rear gears not shifting correctly • Derailleur is not synchronized with shifter
• Derailleur hanger is bent
• Friction in the cable housings
• Dirt or corrosion in the shifter
• Chain is damaged
• Adjust cable tension
• Align derailleur hanger
• Lubricate or replace cable housing
• Lubricate or replace shifter
• Fix or replace chain
Front gears not shifting correctly • Derailleur is not synchronized with shifter
• Derailleur position is wrong
• Friction in the cable housings
• Dirt or corrosion in the shifter
• Chain is damaged
• Adjust cable tension
• Adjust derailleur alignment and height
• Lubricate or replace cable housing
• Lubricate or replace shifter
• Replace chain
Chain drops...
• From smallest rear sprocket
• From largest rear sprocket
• From smallest front chainring
• From largest front chainring
• Rear derailleur high (H) limit is too loose
• Rear derailleur low (L) limit is too loose
• Front derailleur high (H) limit is too loose
• Front derailleur low (L) limit is too loose
• Turn high (H) limit bolt clockwise
• Turn high (L) limit bolt clockwise
• Turn high (H) limit bolt clockwise
• Turn high (L) limit bolt clockwise
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