Brake bleeding

You will need:

 * A brake bleeding kit (clear hose about 12" long with a non-return valve on the end)
 * Brake fluid DOT 4 (about 500ml)
 * Pipette (the plastic kind with a long thin tip)
 * 8mm spanner
 * Jack, chocks, axle stands and wheel brace
 * A glass jar
 * A funnel
 * A container for the old fluid
 * A bocket of water or hosepipe in case of spills

Instructions
Start by removing as much old fluid as you can from both halves of the reservoir, using the pipette.

Top up the reservoir with new fluid. Be aware that the gauge in the reservoir lid will raise the level when it goes in, so don't fill it all the way to the top or it will overflow!

Jack up and remove the first wheel, and connect the bleed kit to the nipple.

With the 8mm spanner, loosen the bleed nipple. A quarter turn should be plenty.

Ask your assistant (if you have one) to gently pump on the brake pedal until you see clean fluid in the tube, with no bubbles. Avoid pushing the pedal all the way down when bleeding, as this can damage the seals in the master cylinder.

Tighten the nipple, and remove the tube. Replace the rubber dust cap on the nipple.

Now test the brake pedal. It should feel firm. If it feels spongy, there are still air bubbles in the tube. Reconnect the bleed kit and try again.

Repeat for each wheel, topping up the reservoir as necessary. Don't let it get so low that air is sucked into the system.

Dispose of the old fluid properly.

Tandem Master Cylinders

If your car has dual circuit brakes, then you may find a further bleed nipple on the master cylinder. According to the Renault Workshop manual, bleeding this after all of the wheel cylinders will also remove air from the back up circuit that opens up in the event of a pressure loss on the main circuit.