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Updated 23/05/07 RAOM0507 Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469
67
Problem Possible Reason Possible Solution
Grinding noise when Pedal bearings too tight Adjust bearings
pedalling Bottom bracket bearings too
tight
Adjust bearings
Chain fouling derailleurs Adjust chain line
Derailleur jockey wheels
dirty/binding
Clean and oil jockey wheels
Chain jumping off Chainring out of true Re-true if possible, or replace
chainwheel sprocket Chainring loose Secure mounting bolts
or chainring Chainring teeth bent or
broken
Repair or replace chainring/
set
Rear to front derailleur
side-to-side travel out of
adjustment
Alter derailleur travel
Freewheel does not
freewheel
Freewheel internal pawl pins
are jammed
Lubricate. If problem
persists, replace freewheel
Incorrect gear shifting Derailleur cables sticking/
stretched/damaged
Lubricate/tighten/replace
cables
Front or rear derailleur not
adjusted properly
Alter derailleurs
Indexed shifting not adjusted
properly
Alter indexing
Steering not accurate Wheels not aligned in frame Align wheels correctly
Headset loose or binding Adjust/secure headset
Front forks or frame bent Consult bicycle mechanic for
frame realignment
Knocking from rear end of Broken suspension mount repair/replace frame
suspension model Worn suspension bushing Replace worn components
Suspension dampers binding Loss of internal fluid Lubricate as necessary
Internal rust Disassemble damper and
replace affected parts
Damaged internal parts Consult professional bicycle
mechanic