|
SYMPTOM |
CAUSE |
REMEDY |
|
Weird
noise when pedalling |
Loose
toe clip bolt on pedals cage pedal
loose on crank chain ring bolts
crank loose
or bottom bracket cups loose |
Tighten toe clips or pedal cage or
pedals or chain rings or crank bolts
or tighten an adjust bottom bracket |
|
Crank
will not turn freely whilst
pedalling |
Bottom
bracket cups to tight in the frame
or water in the b/b or worn |
Adjust
the b/b or overhaul and re grease
the b/b or replace if it is a
cartridge type |
|
Chain
rubs against the front Mech |
Front
Mech out of adjustment or chain ring
spider arm is bent |
Reposition Mech replace the chain
rings or replace the crank |
|
Chain
rings worn |
Age
and use it will happen |
Replace chain rings and get a new
chain |
Old
chain slips on sprockets
or the crank-set |
The
chain is worn out ?
Due to wear and tare |
Replace the chain
Remember to buy the right 8 / 9
speed |
New
chain slips on sprockets
or the crank-set |
Sprockets or the crank-set
are worn out |
Replace the necessary parts
for smoother running & better
shifting |
There should be no play. If you detect slop,
determine if the axle is moving with the
crank, or if the crank is moving on the
axle. If the whole lot is moving and you
have a sealed cartridge bottom bracket on
most bikes since 1992 the BB is
probably no good. Try tweaking the retaining
cup / ring, which might have loosened. The
axle should spin effortlessly, or with some
hydraulic resistance. If it feels or sounds
dry, the BB needs replacing. If you have an
older cup and cone BB, you can try
eliminating the play with an overhaul before
you pay out for a new BB. You'll have to
remove the lock-ring on the left side with a
special lock-ring - spanner tool, then turn
the adjustable cup counter clockwise to
remove it. You may need a special tool for
this as well. Remove the axle bearings,
re-grease, and reinstall. If you got lost
after the first sentence or would rather
watch TV. have a local shop perform
the job.
