Brake Maintenance - BERG vertex series User Manual

BRAKE MAINTENANCE

Proper fitting and operation of bicycle brakes is extremely important for safe cycling.
Brakes should be checked to ensure they are working effectively before each outing. Frequent fitting checks are necessary as cables
stretch and the brake pads become worn with use.
Never ride a bicycle whose brakes do not work properly.
Brake levers should be checked at least every three months. They must be placed in a comfortable position, easily accessible for the
cyclist's hands and should be mounted firmly to the handlebar.
Some brake levers use a reach adjustment screw, which can be modified to meet the distance between the handlebar grips and the
handlebar lever as needed. Brake pads should be checked to make sure they are well positioned and tightened before each outing
on bicycle, as well as bolts and nuts, at least every three months. Press the brake levers to make sure they do not lock and the brake
pads press the rims with sufficient force to stop the bicycle. The brake pads should adjust to leave a space of approximately 1 or
2mm from the rim when the brakes are not in use. The brake pads should be properly centred to provide the maximum amount of
contact with the rim. Brake pads should be replaced if worn to the point grooves and patterns cannot be seen. Brake cable wires
should be checked to see if they are rolled, rusty or if other damage exists. If the cables are damaged, they must be replaced. Some
brakes have a quick release mechanism that allows the wheel to be easily removed. Each time the brakes are adjusted, make sure
the quick release lever is in the closed position.
Never use a bicycle unless the quick release lever is securely locked in the closed position.
Note: When you replace components and parts, be sure to use only original components to ensure good performance and efficiency.
Contact your retailer to ensure correct replacement of parts and components.
Inspect wheels regularly to ensure that they are functioning properly (check for warping, excessive wear and cracks).
A bicycle, like any mechanical component, is subject to tension deriving from use and, consequently, fatigue.
Depending on the use, different components may have different wear rates (different fatigue limits). Check your bicycle and its com-
ponents regularly and look for signs of fatigue (fissures, surface discolouration and cracks). Inform your retailer if any of these signs
appear.
A qualified mechanic should perform the check, cleaning, lubrication and maintenance of your bicycle. Contact your retailer to schedule
regular periodic maintenance checks.
BMX
RECOMMENDATIONS FOR SAFE USE
BMX bicycles are designed for performing acrobatics (on the floor and in the air).
Berg Cycles is not responsible for any personal injuries or property damage resulting from incorrect acrobatic stunts by the users.
BMX bicycles may be fitted with a rotor system in the headset.
The rotor is a mechanism that allows the handlebar to turn 360 degrees without locking the brake cables.
BMX bicycles may come with pegs. These accessories are used for acrobatic stunts.
Contact your retailer to request the tuning of the rotor system and pegs that could be fitted on your BMX bicycle.
ROTOR ADJUSTMENT
CABLE REGULATOR
BARREL EXTREMITY
INDIVIDUAL CABLE COATING
UPPER CABLE
(LONG COATING)
UPPER PLATE
BEARING
CAP NUTS
LOWER PLATE
UPPER CABLE
1. Connect the end of the upper cable barrel to the rear brake lever.
Make sure the long cable is above the short cable otherwise they will become intertwined.
2. Pass the upper cable through the handlebar (under the bar) with the short cable on the same side as the rear brake lever.
3. Connect the upper cable to the top plate over the upper cable cap nuts through the top plate holes connecting them to the bearing.
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CABLE DIVISOR
UPPER CABLE
(SHORT COATING)
BARREL ADJUSTER
LOCKNUT
MAXIMUM DISPLACEMENT ADJUSTMENT
WASHER WITH BRACE
1mm (1/32.) MINIMUM
LOCKNUT
BARREL ADJUSTER
BOTTOM CABLE
4. Screw the barrel adjusters onto the top plate. Do not tighten the nuts at this point.
LOWER CABLE
1. Slide the cable spiral through the noodle on the frame.
2. Connect the lower cable to the bottom plate over the lower cable cap nuts through the bottom plate holes connecting them to
the bearing.
3. Screw the barrel adjuster onto the bottom plate. Do not tighten the nuts at the point.
4. Connect the lower cable to the rear brake. Do not tighten the rear brake at this time.
Make sure the edges of the cable spiral tube containing the upper and lower cables are properly fixed and that the spring tension
on the rear brake is pushing the bearing down.
ADJUSTMENTS
1. Screw the cable adjuster to the rear brake lever and the upper cable splitter altogether.
2. Screw the barrel adjusters into the top plate (or out) to adjust the bearing and obtain maximum displacement. The bearing
should be as low as possible without resting on the bottom plate or on the barrel adjuster screwed to the bottom plate.
3. Use the barrel adjuster screwed on to the upper plate to put the bearing parallel to the upper plate. Use a 10mm screwdriver to
tighten the locknut on the upper left barrel adjuster.
Note: You should never allow the bearing to rest on the bottom plate or on the lower cable barrel adjusters.
a) Screw the lower cable barrel adjusters out (or in) from the lower plate to eliminate any noise caused by the bearing.
b) Tighten the right barrel adjuster locknut on the lower cable.
c) Turn the handlebar 180 degrees and check once more for the bearing noise. If the bearing continues to make noise, use the "loose"
barrel adjusters on the upper and lower cables to eliminate the noise.
d) Repeat steps (6a) and (6c) until the handlebar rotates 360 degrees without the bearing producing noise.
e) Finish tightening the rear brakes.
PEG ASSEMBLY INSTRUCTIONS
ANTI-ROLL
RETENTION
FRONT/REAR RETENTION
WASHER
TIPS
AXLE NUT
FRONT/REAR HUB
WASHER
PROGRESSIVE
WASHER
ANTI-ROLL
Remove the axle nut. You will find a washer or a progressive retention washer. Place the washer between the peg and the bicycle
frame.
Slide the peg onto the shaft, followed by a flat washer and finally the axle nut. Tighten the shaft in a clockwise motion until the
peg is fully tightened against the frame or fork. Repeat for any remaining pegs.
ROLL
This type of peg can be screwed on top of the axle nut. Make sure the axle nut is tightened with a 15mm wrench. Insert a screwdriver
through the mounting holes of the pegs and tighten the shaft in a clockwise motion. Press against the frame or fork for a perfect
fit. Repeat for any remaining pegs.
Note: Not all axles are compatible with pegs.
Some BMX bicycles come with two or four pegs. Contact your retailer to check if pegs are compatible with your bicycle.
Warning: BMX pedals are designed to boost adherence capacity on the pedal surface in comparison to normal bicycle pedals. This can
lead to a very irregular pedal surface with sharp grooves. Users should therefore wear appropriate protective gear.
ROLL
RETENTION
FRONT/REAR RETENTION
WASHER
TIPS
FRONT/REAR HUB
AXLE NUT
PROGRESSIVE
WASHER
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