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15

BRAKING SYSTEM SYSTÈME DE FREINAGE

Wheel Brake Cylinders

Cylindres de frein de roue

A wheel cylinder is a component in a drum

brake system. It is located in each wheel

and is usually at the top, above the shoes.

Its responsibility is to exert force onto the

shoes so they can contact the drum and stop the vehicle

with friction.

What connects these wheel cylinders to the shoes are

usually small rods shaped like a birds beak. It is very

similar to a master cylinder and functions in pretty much

the same way, consisting of just a simple little plunger

on the inside. On older vehicles, these will begin to leak

and hinder the performance of the brakes, but are

normally inexpensive and easy to replace.

The wheel cylinder consists of a cylinder that has

two pistons, one on each side. Each piston has

a rubber seal and a shaft that connects the piston

with a brake shoe. When brake pressure is applied, the

pistons are forced out pushing the shoes into contact

with the drum. Wheel cylinders must be rebuilt or

replaced if they show signs of leaking.

Le cylindre de roue est l’élément qui permet

de transformer l’énergie hydraulique en énergie

mécanique dans un système de freins à tambours

sur une voiture.

Ce cylindre comprend 2 pistons recouverts par des caches

poussière qui viennent actionner les 2 mâchoires de frein

pour les mettre en contact avec le tambour.

Ce cylindre peut se gripper ou se mettre à fuir. Si du liquide

de frein est visible autour ou en touchant au cache poussière,

le cylindre de roue est hors-service, il est conseillé de les

changer par paires car si l’un est arrivé au bout, l’autre n’est

sûrement pas loin ou peut-être pire.

FACTS

FAITS

source:

www.wikipedia.org

source:

www.over-blog.com

AVAILABLE

DISPONIBLE

250

SKUs

OVER / PLUS DE

AWC370051 | CHR Caravan

AWC37787 | MAZ Protege

ALSO AVAILABLE - ÉGALEMENT DISPONIBLE

page

81

6914

Brake lathe bits

Couteaux pour tour à freins