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Overhauling the Bearings [CONTINUED]
To increase their lifespan before replacement, cartridges cn
be serviced. Using a thin knife, you can peel back the rubber/
plastic (metal in the case of Chris King) seal, clean out the old
grease as much as possible, pack in new grease and reassemble.
Under wet riding conditions, overhauling loose ball bearings
should be done every month, otherwise:
• Recommended at six months.
• Once a year if only a moderate amount of time was spent
riding.
• Every two years if bike is rarely ridden.
Cables and Housing
Replace the brake/shift cables and their housing every year.
Components That Wear Out
The following is a rough guide on when to replace those parts
on a bike that wear out with use.
Tires:
• When a smooth/bald spot begins to appear on the riding
surface.
• When you are getting consistent flats.
• The sidewalls appear to no longer be structurally sounds
(dry rot, slashes, etc.).
Rims:
• For bikes with rim brakes, when the braking surface of the
rim feels concave.
• Some rims have a “trench” running on the braking surface—
this is the wear line. When this begins to disappear, it is
time to replace.
Chain:
• Check at 1500-2500 miles, depending on riding conditions.
• Should be replaced after 3,000 miles.
Gates Carbon Drive Belt:
• Should be replaced after 10,000 miles.
Cassette:
• 10,000 miles if chain replaced frequently.
• If a new chain “skips” on any of the cassette cogs while rid-
ing, cassette is worn.
• Around 6,000 miles under hard use.
• Brake Pads: Most brake pads have a “wear line”. When the
pad is worn down to this line, it is time to replace.
Bike Friday Maintenance
