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Detailed Maintenance
5
Problem
Possible Cause
Gear shifts not working properly
-
Derailleur cables sticking/stretched/
damaged
-
Front or rear derailleur not adjusted
properly
-
Indexed shifting not adjusted properly
Slipping chain
-
Excessively worn/chipped chainring or
freewheel sprocket teeth
-
Chain worn/stretched
-
Stiff link in chain
-
Non compatible chain/chainring/
freewheel
Chain jumping off freewheel sprocket or
-
Chainring out of true
chainring
-
Chainring loose
-
Chainrign teeth bent or broken
-
Rear or front derailleur side-to-side
travel out of adjustment
Contatnt clicking noises when pedaling
-
Stiff chain link
-
Loose pedal axle/bearings
-
Bent bottom bracket or pedal axle
-
Loose crankset
Grinding noice when pedaling
-
Pedal bearings too tight
5
-
Bottom bracket too tight
-
Chain fouling derailleurs
-
Derailleur jockey wheels dirty/bindings
92
Remedy
-
Lubricate/tighten/replace cables
-
Adjust derailleurs
-
Adjust indexing
-
Replace chainring, sprockets and
chain
-
Replace chain
-
Lubricate or replace link
-
Seek advice at a bicycle shop
-
Re-true if possible, or replace
-
Tighten mounting bolts
-
Repair or replace chainring/set
-
Adjust derailleur travel
-
Lubricate chain/Ajdust chain link
-
Adjust bearings/axle nut
-
Replace bottom bracket axle or pedals
-
Trighten crank bolts
-
Adjust bearings
-
Adjust bearings
-
Adjust chain line
-
Clean and lubricate jockey wheels
Problem
Possible Cause
Freewheel does not rotate
-
Freewheel internal pawl pins are
jammed
Brakes not working effectively
-
Brake blocks worn down
-
Brake blocks/rim greasy, wet or dirty
-
Brake cables are binding/stretched/
damaged
-
Brake levers are binding
-
Brakes out of adjustment
When applying the brakes they squeal/
-
Brake blocks worn down
squeak
-
Brake block toe-in incorrect
-
Brake blocks/rim dirty or wet
-
Brake arms loose
Knocking or shudderin when applying
-
Bulge in the rim or rim out of true
brakes
-
Brake mounting bolts loose
-
Brakes out of adjustment
-
Fork loose in head tube
Wobbling wheel
-
Axle broken
-
Wheel out of true
-
Hub comes loose
-
Headset binding
-
Hub bearings collapsed
Detailed Maintenance
5
Remedy
-
Lubricate. If problem persists, replace
freehweel
-
Replace brake blocks
-
Clean blocks and rim
-
Clean/adjust/replace cables
-
Adjust brake levers
-
Center brakes
-
Replace blocks
-
Correct block toe-in
-
Clean blocks and rim
-
Tighten mounting bolts
-
True wheel or take to a bike shop for
repair
-
Tighten bolts
-
Center brakes and/or adjust brake
block toe-in
-
Tighten headset
-
Replace axle
-
True Wheel
-
Adjust hub bearings
5
-
Adjust headset
-
Replace bearings
93
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