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Does the Brake pad touch the disc when u jack the car up?

lambo

By lambo,
in General Maintenance

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lambo Enthusiast

lambo

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Its alright i will get my mechanic friend to teach me a first time round.

Where do you guys learn all these stuff? Most of u work a a mechanic?

Anyway which Brake Fuild is best for track and street use? I check for website that Dot 5 does not absorb moisture when it get hot, this result in air pocket in the line. Is that true?

Neil Grand Master

Neil

Posted
Posted

Just a few observations after reading this thread:-

1/ Opening the bleed valve is NOT necessary for retracting the pistons. If you keep topping up the Master Cylinder all the time as your pads wear then you will need to keep a watchful eye on it as you push the pistons back home or it will overflow. Buy a big syringe from a Vet or a Model Plane hobby shop and suck the excess out. Avoid topping up the Cylinder in the 1st place,,,,the level is something to keep a eye on as it tells you how your system is going ie pad wear and possible leaks. Pushing the pistons back is usually done with a specialist tool,,,the G-clamp one is also good,,,but you can cheat by using the old pad and a screwdriver as a pry bar between the pad and the disc. A bit Bodgie but it will work The G-Clamp idea sounds much better though. Just have a good think about it before you start doing anything.

2/ You don't have to worry about water absorbtion as long as you change the fluid regulally. Water gets into your brake system through reverse osmosis,,, it get through your rubber brake hoses over a long period of time. Thats why manufacturers recommend changing it every 12 months.

3/ Dot 5 brake fluid is a great choice,,, try Motul RBF600 or any of the other high quality brands. The main reason you'll boil the brake fluid on a race track is by using Street Pads. Go buy yourself a harder pad for the track,,,something like an EBC Red or the like. That way you'll stop brake pad fade which leads to keeping the fluid cooler and when you need that middle pedal on a great lap you'll have a nice firm one.

4/ When bleeding your system start at the left rear,,next the right rear and then the left front and finish on the right front. Only ever use a good quality ring spanner and please if the bleed valves spanner contact area look sus replace it. Many a time I have been guilty of not replacing it and many a time I have suffered,,,espcially on a Sunday arvo when nobodies open.

I'm starting to think I should write a article about doing brakes. Sorry for the rant but brakes and me have always been good buddies.

Neil.

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