Mongoose R6174 - Troubleshooting Guide

6 Maintenance
36
TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy
Brakes not working
eecvely
• Brake pads worn down
• Brake pads/rim greasy, wet or dirty
• Brake cables are binding/stretched/damaged
• Brake levers are binding
• Brakes out of adjustment
• Replace brake pads
• Clean pads and rim
• Clean/adjust/replace cables
• Adjust brake levers
• Center brakes
When applying the
brakes they squeal/
squeak
• Brake pads worn down
• Brake pads toe-in incorrect
• Brake pads/rim dirty or wet
• Brake arms loose
• Replace pads
• Correct pads toe-in
• Clean pads and rim
• Tighten mounng bolts
Knocking or shuddering
when applying brakes
• Bulge in the rim or rim out of true
• Brake mounng bolts loose
• Brakes out of adjustment
• Fork loose in head tube
• True wheel or take to a bike shop for repair
• Tighten bolts
• Center brakes and/or adjust brake pads toe-in
• Tighten headset
Wobbling wheel • Axle broken
• Wheel out of true
• Hub comes loose
• Headset binding
• Hub bearings collapsed
• Replace axle
• True wheel
• Adjust hub bearings
• Adjust headset
• Replace bearings