©2011
To disassemble:
1. Remove the chain from the chainwheel.
2. Remove the left pedal by turning the spindle clockwise.
3. Remove the left side locknut by turning it clockwise and remove the keyed lockwasher.
4. Remove the adjusting cone by turning it clockwise with a screwdriver.
5. Remove the left ball retainer, slide the crank assembly out of the frame to the
right, and remove the right ball retainer. Clean and inspect all bearing surfaces and
ball retainers, and replace any damaged parts. Pack the ball bearing retainers with
grease, then re-assemble in the reverse of the above procedure.
Lubrication and Adjustment - 3 piece cranks
3 piece crank designs can vary. Please see a qualified bicycle mechanic for any 3 piece
crank adjustments or repairs. Or refer to a detailed bicycle repair manual for further
information. Several specialized tools are needed for disassembly and maintenance
of 3 piece cranks. Do not attempt service without access to the proper tools.
Chain
Do not ride with a damaged chain.
The chain must be kept clean, rust free and frequently lubricated in order to extend
its life as long as possible. It will require replacement if it stretches, breaks, or causes
inefficient gear shifting. Make sure that there are no stiff links, they must all move freely.
Rear Sprocket Front Chainwheel
(Fig. 4.11)
For single speed bicycles, ensure that chain tension is correct. Follow the test in
(Fig.4.11). If the chain can be moved more than 10mm, the rear wheel should be
moved back until proper chain tension is achieved.
•
Pull up
•
10 mm
•
Straightedge
Lubrication
The chain should be lubricated with light oil at least every month, or after use in wet,
muddy, or dusty conditions. Take care to wipe off excess oil, and not to get oil on the
tires or rim braking surfaces.
MAINTENANCE
Rear
sprocket
Front chainwheel
Pull up
Straightedge
10 mm
4.11
55
