Detailed Maintenance Detailed Maintenance
Hub Bearing Adjustment
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How To Fix a Flat Tire
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Hub Bearing Adjustment
When checked, the hub bearings of either wheel will require adjustment if
there is any more than slight side play.
1. Check to make sure neither locknut is loose.
2. To adjust, remove wheel from bicycle and loosen the locknut on one
side of the hub while holding the bearing come on the same side with
a flat open-end wrench.
3. Rotate the adjusting cone as needed to eliminate free play.
4. Re-tighten the locknut while holding the adjusting cone in position.
5. Re-check that the wheel can turn freely without excessive side play.
How To Fix a Flat Tire
If you need to repair a tire, follow these steps:
1. Remove the wheel from the bicycle.
2. Deflate the tire completely via the valve.
Loosen the tire bead by pushing it inward all the way around.
3. Press one side the tire bead up over the edge of the rim.
Note: Use tire levers, not a screwdriver, otherwise you may damage
the rim.
4. Remove the tube, leaving the tire on the rim.
5. Locate the leaks and patch using a tube repair kit, carefully following
the instructions, or replace the tube.
Note: Ensure that the replacement tube size matches the size stated
on the tire sidewall and that the valve is the correct type for your
bicycle.
6. Match the position of the leak in the tube with the tire to locate the
possible cause and mark the location on the tire.
7. Remove the tire completely and inspect for a nail, glass, etc. and
remove if located. Also inspect the inside of the rim to ensure there
Lock
Washer
Axle
Lock Nut
Hub Body
Ball Bearings
Bearing
Cone
Washer
Axle Nut
Push tire bead
into the center
of the rim.
are no protruding spokes, rust or other potential causes. Replace the
rim tape, which covers the spoke ends, if damaged.
8. Remount one side of the tire onto the rim.
9. Using a hand pump, inflate the tube just enough to give in some shape.
10. Place the valve stem through the hole in the rim and work the tube into
the tire. Note: Do not let it twist.
11. Using your hand only, remount the other side of the tire by pushing the
edge toward the center of the rim. Start on either side of the valve and
work around the rim.
12. Before the tire is completely mounted, push the valve up into the rim to
make sure the tire can sit squarely in position.
13. Fit the rest of the tire, rolling the last, most difficult part on using your
thumbs. Note: Avoid using tire levers as these can easily puncture the
tube or damage the tire.
14. Check that the tube is not caught between the rim and the tire bead at
any point.
15. Using a hand pump, inflate the tube until the tire begins to take shape,
and check that the tire bead is evenly seated all the way around the rim.
When properly seated, fully inflate the tire to the pressure marked on the
sidewall. Use a tire air pressure gauge to check.
16. Replace the wheel into the frame checking that all gears, brakes and
quick release levers are properly adjusted.
Remove tire bead from the rim.
Pull tire back onto the rim.
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