RIM BRAKES
1
2
3
4
5
6
11
7
8
9
10
12
Figure RB2:
D
iagram of rim brake
parts,
view from back. 1 Pipe 2 Link 3
No touch 4 Cable‐clamp bolt 5 Cable
6 Brake Arm 7 Centre‐adjustment
screw
8 Brake shoe (brake pad)
9
Arm clamp bolt 10 Pad clamp bolt 11
Rim of wheel 12 Tyre
How Rim Brakes work:
Rim brakes have two
brake pads. One on the left side of your
bicycle wheel rim, the other on the right
side. Pressure is applied using a wire which is
connected to the brake lever on the
Handlebar. Squeezing the brake lever will
cause the brake pads to touch the rim
causing friction and slowing the wheel.
Inspection of Rim brakes:
If the groove in the brake pad surface is less than 2mm
deep: change pads
.
To adjust rim brake pad distance from rim,
turn the barrel which is located at your
brake lever on the handlebar (Figure BL1). If the brakes still need adjustment,
loosen the cable clamp bolt and pull the brake cable through. The distance of the
brake pads to the rim should be about 1 to 2 millimetres. Re‐tighten cable clamp
bolt. Depress about 10 times then re‐check distance
To put rim brakes in the centre
adjust the spring tension turning the centre
adjustment screws (one at left side, on at right side of rim) in small increments.
To align brake pads correctly to
rim
loosen brake pad clamp Bolt
(10) and align as shown in the
figure RB1. Tighten bolt to 9 Nm.
Figure RB1: Right:
large arrow shows direction of rim rotation. Brakes should be
“toed‐in” so the rear portion of each brake pad is about 0.5‐1mm farther from the
rim than the front portion of the brake pad
Brake
pad
aligned
with the rim surface
Pad and rim should be parallel
Barrel
To release rim brake for wheel removal,
push both brake pads against the rim with one hand, then pull the Pipe (1) away
from the Link (2) with the other hand and lift the pipe. If this does not work, release cable clamp bolt (4). To close brakes
after wheel has been re‐installed follow instructions in reverse sequence.
WARNING!
Make sure brakes are working correctly before each ride to avoid injury!
Lever clamp bolt
Brake Levers
(Figure BL1)
The brake wire is attached to the lever and pressing the lever (moving the lever closer to the handlebar using your hand)
will pull the wire and activate the brakes. Brake levers are attached with a lever clamp bolt and it should be tightened to
7 Nm. To change which lever controls the front brake open the brakes, detach the brake cable and install cables into
opposite levers. Close brakes and re‐adjust as described in brake adjustment chapter.
Figure BL1: Brake lever
To install a brake or gear cable
Locate the ball end of the cable in the brake lever or gear shifter. Memorize cable path along bike, loosen the cable‐
clamp and remove the old cable. Apply grease to the part of the new cable which is inside the outer brake cable housing.
Thread new cable through housing. Check that the end of the cable with the ball is installed correctly in the lever/shifter.
Check that the housing is positioned in the housing stop of the lever/shifter. Adjust brakes/derailleur according to the
respective section in this manual. Tighten cable‐clamp bolt to 7Nm. Cable should be cut at about 1 ½ inches after cable‐
clamp. Cover the end of the cable with a cable cap to prevent fraying.
10
Cables and electric wires
Check all cables monthly if there are any bends, cuts, frays or worn areas. Do not ride bike with damaged cables. Have
damaged cables replaced.
15
Brake
lever
© Leitner Pty Ltd 2019
Содержание Berlin 2020
Страница 25: ...25 Leitner Pty Ltd 2019 ...
