Drum brakes
A drum brake is fitted in the hub of the wheel. The brake
system consists of a brake drum that rotates with the
wheel; inside the drum there are two brake shoes which
do not rotate with the wheel. When you brake, the brake
shoes are forced against the drum: this brings the wheel to
a standstill. Drum brakes wear out with the passage of time.
You will become aware of this when the brake levers are
almost able to touch the handlebars. All it usually requires
is to adjust the brakes. Push the lever
(A)
upwards
(see
fig. 54)
. Then screw the nut
(B)
in to the point where the
brake just catches, then unscrew it just a touch so it is just
clear and the wheel spins freely. Apply the brakes firmly at
regular intervals while you are adjusting them. Take care
to ensure that the brake cable or pin is located correctly in
the lever so it doesn’t fly out!
Next lift the bike up and spin the wheel. If the wheel keeps
on spinning without sticking, then you have adjusted the
brake correctly, otherwise the wheel will stop abruptly. In
the latter case you will need to back the nut off again by
one or more turns.
The same procedure can be followed if you have rod-
operated brakes. You just need to ensure you adjust the
front brake first before starting on the rear.
Brake shoe replacement should be left to the Gazelle
specialist when required. He is the only one who can
determine the type of brake shoe that needs to be used.
Roller brake
The Shimano roller brake
(see fig. 55)
is a type of drum
brake. Correct adjustment is achieved by twisting the
barrel adjusters at the hub
(A)
and at the brake lever on the
handlebar
(see chapter 5.1, fig. 52)
. The roller brake also
has a grease fitting
(B)
to add grease to lubricate the brake.
We would advise you to go to your specialist for this. If you
top up the brake incorrectly or use the wrong lubricant, you
can actually cause serious damage to the brake! If you still
want to lubricate the brake yourself, bear in mind that you
must only use Shimano roller brake grease.
54
55
20
Summary of Contents for Orange C330 HMB
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Page 31: ...76 79 Balance 81 Flowline 78 80 77 Linea 87 Cadena 84 86 83 Finura 85 Delgado 82 31...
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