66
TROUBLESHOOTING
Problem
Possible Reason
Possible Solution
Slipping chain
Excessively worn or chipped
chainring or freewheel
sprocket teeth
Replace chainring/sprockets/
chain
Chain worn/stretched
Replace chain
Stiff link in chain
Oil or replace link
Non compatible chain/
chainring/freewheel
Consult a professional
bicycle mechanic
Brake not working correctly
Brake blocks worn down
Replace brake blocks
Brake blocks/rim greasy, wet
or dirty
Clean blocks and rim
Brake cables are binding/
stretched/damaged
Clean/adjust/replace cables
Brake levers are binding
Alter brake levers
Brakes out of adjustment
Centre brakes
Frequent punctures
Inner tube old or faulty
Replace inner tube
Tyre tread/casing worn
Replace tyre
Tyre incompatible to rim
Replace with correct tyre
Tyre not checked after
previous puncture
Remove any sharp objects
from tyre
Tyre pressure too low
Inflate tyre to correct
pressure
Spoke protruding into rim
File down spoke
When the brakes are applied Brake blocks worn
Replace brake blocks
they squeal/squeak
Brake blocks/rim greasy, wet
or dirty
Clean blocks and rim
Brake block toe-in incorrect
Correct block toe-in
Brake arms loose
Secure mounting bolts
Wobbling wheel
Axle broken
Replace axle
Wheel out of true
True wheel
Hub cones loose
Tighten hub bearings
Headset bindings
Alter headset
Hub bearings collapsed
Replace bearings
Knocking or shuddering
when brakes applied
Bulge in the rim or rim out
of true
True wheel or consult a bike
mechanic
Brake mounting bolts loose
Secure bolts
Brakes out of adjustment
Centre brakes and/or adjust
brake block toe-in
Forks loose in head tube
Secure headset
Constant clicking noises
Stiff chain link
Oil chain
when pedalling
Loose pedal axle/bearings
Alter bearings/axle nut
Loose bottom bracket/
bearings
Alter bottom bracket
Bent bottom bracket or pedal
axle
Replace bottom bracket or
pedals
Loose crankset
Tighten crank bolts
APOM0312
Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469