Brompton P Line Bedienungsanleitung Seite 28

ROUTINE REPLACEMENTS
Planned replacement is advised to ensure both safety and good performance. The suggested intervals
between replacements are for bicycles subjected to normal use; the most appropriate timing depends on the
conditions of use and riding style. We recommend genuine Brompton replacement parts for safety-critical
components.
ALUMINIUM COMPONENTS As on other lightweight machines, aluminium alloy is used in the construction
of the Brompton, and this material has a finite design life before failure. In normal use, the risk of aluminium
fatigue failure is remote, even after many thousands of miles. However, the risk of failure increases with use,
especially with hard riding or other severe loading. As such a failure could cause injury, the hinge clamp
plates, handlebar, chain set, seat pillar and pedals should be replaced every 5,000 miles (more frequently if
they are subjected to hard use), and we recommend that these items are checked regularly.
TRANSMISSION All Brompton bicycles have a self-adjusting, sprung chain tensioner to maintain correct
chain tension. Over time, the chain and sprockets will wear, commonly known as chain stretch; this will result
in inefficient and rough power transmission. We recommend replacing the chain and sprockets every 2,000
– 3,000 miles, but regular cleaning and lubrication will prolong the chain's life. Never use a new chain on
worn sprockets or vice versa. To measure chain stretch, you may wish to use a chain stretch tool.
BRAKES Cables do not have an indefinite life, and to reduce the risk of failure, replace the cables at
intervals of 4,000 miles or less. New outer-cables should be exactly the same length as the original; for best
results, use genuine Brompton-specific cables and have them fitted by an authorised Brompton dealer or
certified bicycle technician. Cables that are the incorrect length could affect the safety and performance of
your bicycle.
GEAR CABLES These should be replaced at the same interval as brake cables. As Brompton cables are
specifically designed for Brompton bikes, only genuine Brompton cables should be used. Have them fitted
by an authorised Brompton dealer or certified bicycle technician. Cables that are the incorrect length could
affect the safety and performance of your bicycle.
BRAKE BLOCKS When brake blocks are new they have grooves on the braking surface; once those
grooves are less than 1mm deep or no longer visible, the pads should be replaced. As brake pads are critical
to the safe function of your brakes, we recommend you have them fitted by a qualified bicycle technician,
using genuine Brompton replacement brake pads.
TYRES The risk of punctures increases with mileage and as the tyre tread starts to wear away. Once you
notice your tyre tread wearing thin, replace the tyre. This will reduce your chances of puncture and increase
pedalling efficiency.
DYNAMO LIGHTING The electric cables used in dynamo lighting wear out with the folding and unfolding
of the Brompton. When the cables become worn, replace them immediately to avoid any damage to your
dynamo hub. If your lights are faulty, have them inspected by a qualified bicycle technician to keep yourself
visible and safe on the roads.
SUSPENSION BLOCK AND BUSH Check the bush and suspension block for wear annually. If you
notice any cracks in the suspension block, have it replaced immediately.
WHEEL RIMS The braking surfaces of the rims wear with use. There is a small indent
on the braking surface next to the valve; this acts as a wear indicator. When the rim
wears so that this indent is no longer present, the rim should be replaced.
Look for this symbol on the wheel rims.
100-MILE SERVICE Certain items on any bicycle take time to bed in; to avoid damage, these need attention
soon after you have bought the bike. We recommend having your Brompton checked by a qualified mechanic
after the first 100 miles or 1-month (which ever comes sooner). They should pay particular attention to the
following items:
SPOKES The tension of the spokes should be checked and adjustments made to suit. If a spoke becomes
loose for any reason, neighbouring spokes will be carrying extra load and may fail.
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