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'Bleeding Brakes" literally


stuart147

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I have been trying all afternoon to bleed the brakes on my Caterham all afternoon.

I have had some work done on the front end that meant that the front calipers had to be removed. They are Hi-Spec 4 pot calipers and were new last winter. I have also had new front brake hoses made and these are fitted. While I had the car on axle stands, I took out the rear brake pads to check them and clean and grease the sliders.

Today, I thought I would try to bleed them. I have bled them at least 4 times this afternoon using over a litre of new brake fluid. I started with the nearside rear then offside rear followed by nearside front and lastly, offside front.

I have done them each time until no bubbles are present, but when I press the pedal, there is nothing there. The pedal goes straight to the floor.

If it helps with answers, I am using an "Eazi Bleed" system.

I have also done both inner and outer bleed nipples on the front calipers.

Stuart

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Hi Ian

You have me wondering now. Bleed nipples are very definetely on the bottom. Would it be possible for me to have put the calipers on the wrong sides? (Not the most technically aspired person).

Hi Charles. Using pedal method not an option earlier today, but could be tomorrow.

Stuart

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Use the gravity bleeding method - it takes a while but I've never known it fail.

Just undo a bleed nipple and let it drip through a bleed pipe into a jar. Keep checking the master cylinder to make sure it doesn't drop too low and let air in. Do 1 corner at a time in the correct sequence.

Probably takes 10 - 20 mins a corner, hence pro mechanics don't do it, but it's fool proof. You can also busy yourself with other stuff whilst it's at it, just keep checking the master cylinder level.

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  • 3 years later...

None of these posts addresses how to bleed brakes with two separate master brake cylinders, one for the front brakes, the other for the rear brakes, obviously activated by the single brake pedal. If bleeding one, how is the pressure in the other closed system compensated?

 

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