|
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.
