Difficulty
Moderate
Steps
9
Time Required
00:30:00 - 01:00:00
Tutoriel complet
Ce tutoriel contribué par la communauté est complet et prêt pour l'examen de l'équipe Oscaro.
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User contributed
Introduction
If your braking is no longer effective but your brake pads are not worn, the problem probably comes from the brake fluid.
It must then be purged in order to remove air bubbles and water which may be in the circuit.
It is recommended to change this fluid every two to four years depending on the manufacturer's recommendations, because it is sensitive to humidity.
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To begin, open the hood and locate the brake fluid reservoir.
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Unscrew and open the cap. Be careful, brake fluid is very corrosive, it must not come into contact with the bodywork!
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If the jar is full, empty it as much as possible using a syringe.
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Using a funnel, fill the jar up to the "Maxi" mark with the new brake fluid. Be careful, it fills up quickly!
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Remember to check compatibility. On Twingo 1, DOT 4 is perfectly suitable. 1L is more than enough!
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We are now ready to purge the circuit.
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A specific order must be followed. On Twingo 1 Phase 1, it is as follows: right rear wheel, left front wheel, left rear wheel, right front wheel.
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For ease, you can of course lift the car and remove the wheels. But this is not necessarily necessary to carry out this operation!
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We start with the right rear. Locate the bleeder screw, then, using a flathead screwdriver, carefully remove the plastic cover.
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The bleed screw is now accessible.
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We will now begin bleeding the circuit. We will need a second person to press the brake pedal when necessary.
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There are two possible methods: Connect the pipe to the screw, then use an 8 mm flat wrench to unscrew the screw.
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Otherwise, use a ratchet wrench with an 8 socket to loosen the screw, then connect the pipe, and continue unscrewing by hand.
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It is not necessary to unscrew the screw much. A quarter or half turn is enough.
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Place the other end of the hose in a container to collect the used liquid.
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The person behind the wheel will now pump the pedal repeatedly. Brake fluid will come out of the hose. Hold the hose securely on the screw.
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When there are no more bubbles and the color changes, it means that there is no more old liquid. The entire circuit is filled with the new one.
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The person behind the wheel then holds the pedal down, while you tighten the screw. With an 8 mm flat wrench directly, or with your fingers and then with a socket.
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The person can then release the pedal. Replace the plastic cover.
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We will now repeat the operation on the left front wheel. For ease, turn the steering wheel to the left.
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Proceed in the same way: locate the screw then remove the plastic cover.
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Then connect the hose, unscrew the screw. Wait for a color change and for the bubbles to disappear. Hold the pedal down and then screw the screw back in.
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Now repeat the steps with the left rear wheel, then the right front wheel.
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Add brake fluid if necessary, to bring it between the minimum and maximum levels. Screw the cap back on.
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If necessary, pump the pedal to make it harder. Bleeding is complete!
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Be sure to test the vehicle's braking before setting off on a road!
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You're done, congratulations! Your car has regained effective braking!
You're done, congratulations! Your car has regained effective braking!
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