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Problem
Possible Causes
Remedy
When applying the
brakes they squeal/
squeak
-Brake blocks worn down
-Brake block toe-in incorrect
-Brake blocks / rim dirty or wet
-Brake arms loose
-Replace blocks
-Correct block toe-in
-Clean blocks and rim
-Tighten mounting bolts
Knocking or shuddering
when applying brakes
-Bulge in the rim or rim out of align-
ment
-Brake mounting bolts are loose
-Brakes out of adjustment
-Fork loose in head tube
-Align wheel or take to bicycle shop
for repair
-Tighten bolts
-Centre brakes and/or adjust brake
block toe-in
-Tighten headset
Wobbling wheel
-Axle is broken
-Wheel out of alignment
-Hub comes loose
-Headset binding
-Hub bearings collapsed
-Replace axle
-Align wheel
-Adjust hub bearings
-Adjust headset
-Replace bearings
