Kogan FORTIS 700C User Manual page 28

Pedals:
Problem
Constant clicking
noises when pedalling.
Grinding noise when
pedalling.
Freewheel does not
rotate.
Brakes:
Problem
Brakes not working
effectively.
When applying the
brakes they
squeal/squeak.
Knocking or shuddering
when applying brakes.
Cause
• Stiff chain link
• Loose pedal axle or bearing.
• Loose bottom bracket axle or
bearings.
• Bent bottom bracket bearings
too tight.
• Loose crankset.
• Pedal bearings too tight.
• Bottom bracket bearings too
tight.
• Chain fouling derailleurs.
• Derailleur jockey wheels dirty
or binding.
• Freewheel internal pawl pins
are jammed.
Cause
• Brakes blocks worn down.
• Brakes blocks/rim greasy, wet
or dirty.
• Brake cables are binding,
stretched or damaged.
• Brake levers are binding.
• Brakes out of adjustment.
• Brake blocks worn down.
• Brake block toe-in incorrect.
• Brake blocks/rim dirty or wet.
• Brake arms loose.
• Bulge in the rim or rim out of
true.
• Brake mounting bolts loose.
• Brakes out of adjustment.
• Fork loose in head tube.
Solution
• Lubricated chain or adjust
chain link.
• Adjust bearings or axle nut.
• Adjust bottom bracket.
• Replace bottom bracket
axle or pedals.
• Tighten crank bolts.
• Adjust bearings.
• Adjust bearings.
• Adjust chain line.
• Clean and lubricate jockey
wheels.
• Lubricate, if problem
persists, replace freewheel.
Solution
• Replace brake blocks.
• Clean blocks and rim.
• Clean, adjust or replace
cables.
• Adjust brake levers.
• Centre brakes.
• Replace blocks.
• Correct block toe-in.
• Clean blocks and rim.
• Tighten mounting bolts.
• True wheel or take to bike
shop.
• Tighten bolts.
• Centre brakes and/or adjust
brake block toe-in.
• Tighten headset.