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Updated 23/05/07RAOM0507 Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469
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