Tip & How-To about Yugo Hatchback

How to Bleed Your Brakes

There are two basic methods of Brake fluid bleeding.
By only one person,using a Vacuum Pump/Brake Bleed Kit.
By two persons,using the pressure of piston at the master cylinder.
Lift up your car with 4 jack stands, and remove all wheels.
In two cases, the most important task is to make sure the bleed nipple can be loosened.
You need a box wrench that fits the bleeder nipple. A little penetrating oil on the nipples overnight will help. If it doesn’t help, apply heat (butane torch or similar) and then spray again with WD40. With some moderate tapping with a hammer to break any corrosion, loosen the nipples.
If the bleed nipples are welded solid in the caliper then you need to have the nipples drilled out and heli-coils fitted by a local engineering workshop.
So it is a good idea each time you bleed the brakes replace the bleed nipples with the new one.
Use at least, High-Performance DOT 3 or DOT4 Brake Fluid.
An unopened can has a long shelf life. An opened can absorbs humidity, and should be discarded within a few weeks.
Fit a piece of clear tubing over the bleed screw nipple and run the hose into a clear bottle. Unscrew the Bleed Nipple about a 1/4 turn and go pump the brake pedal and keep refilling the reservoir before it goes below the 3/4 mark or air will be drawn into the system, close the bleeder.
Torque the bleed nipples to only 30-50 inch pounds (about 3– 5`foot pounds). Don’t forget to put on the rubber caps.
Repeat until clean/clear fluid comes out. Move to the next wheel until all are done.
Depend on what dual braking system your car has, the pattern is different.
Ensure you have a nice firm brake pedal before you take the car off the jacks.
Make sure that you clean up any spills with a rag and ensure that you dispose of your waste brake fluid in a responsible and safe manner.

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4 Answers

replace all brake fluid in system?


the fluid is in fact hydrascopic (sucks water)
and if ignored, long enough the the water in the fuid
starts corroding all parts,
think about abs modulator damage and the price of just that.?

there are many ways to bleed the system.
gravity bleed, (useless and risky on abs)
2 man (free of cost, cept the wrench to bleed it)
front pressure bleed.
rear vacuum hand pump bleed.
rear reverse pressure bleeding.
what ever you do , avoid adding air to the upstream end.
(like letting the MC go dry, )

find a real ASE shop and get a non crook to do the job right.
and win.

there is no best way, with tools, each has pros and cons.
but the 2man is safe, at each caliper. MC kept full.

do you need a book on bleeding
there are 1000s in print, from 100 year ago to now.
no lack of facts in print.
then read the pitfalls in ABS> learn what NOT to do , is best.

google 2 man bleeding,
like 78million hits.

Apr 29, 2016 | 2009 Jeep Compass

2 Answers

I have 2012 Corolla, brake pedal is goes floor and very low brake also. I have changed Brake vacuum and master cylinder. but the problem still not solve.


You didn't say so I'll ask. Did you bleed the brake lines? Any time you deal with brake fluid replacement you need to do this. Air gets trapped in the system and causes exactly what you are describing.

There are several methods to drain fluid and air from system. I have used both the vacuum method and assistant / friend method. Here is a video on YouTube which shows the methods. You can search for more detailed videos if you want.

Make sure you have the correct fluid for you system, Dot 3 or 4 most likely, and make sure you have plenty of it since you don't want to get half way through and run out. You can always return unopened bottles for refund.

Hope this helps.

Apr 02, 2015 | 2012 Toyota Corolla

1 Answer

how to bleed 2004 pontiac sunfire slave cylinder


There are 2 ways to bleed the clutch slave cylinder on any vehcile really. First way is to have a person in the car pump the clutch pedal several times and hold it to the floor. While the person holds the clutch pedal to the floor a second person opens the bleeder screw on the slave cylinder itself, once the air/fluid has stopped running out of the bleeder screw, tighten it again and have the first person in the car pull up on clutch pedal from the floor (because it will stick down after openening and tightening the bleeder screw) and then repeat that process until the clutch pedal feels good and hard. Make sure you fill the fluid in the clutch master resevoir each time you open and close the bleeder screw so you don't get new air coming through the system from emptying the resevoir.

Now, the second way is the way I prefer because you only need 1 person, however you do need more tools. Fill the clutch master resevoir will the proper fluid then find a cap that fits the resevoir or buy a replacement cap and drill a small 1/8" hole in the middle of the cap then use a vacuum pump and insert a rubber adapter (from the vacuum pump kit) into the 1/8th hole you have drilled. you'll want to hook up your vacuum pump with an inline catch tank that usually comes with the kit you purchase. Then just pump the tool creating a vacuum in the master resevoir, this will reverse bleed all the air up into the resevoir. as you see the fluid drop add more fluid and repeat this process until the fluid no longer drops. Check the clutch pedal for proper opperation and you're good to go!

Jul 23, 2014 | 2004 Pontiac Sunfire

2 Answers

i poured transmission fluid in my brake resevior


I don't claim to be an expert on this, so see if you can get other opinions.
I think what you have to do is empty the brake reservoir, including sopping up the fluid on the surfaces. I would probably suggest putting clean brake fluid in and using that to "rinse" the inside of the reservoir.
Then, go to each wheel and bleed completely until all trans fluid is out and only brake fluit comes out the bleeder.
I'm not sure, but I think a mechanic has a system to pressure bleed the brake system, call one to get an estimate.

Gary

Aug 05, 2011 | Dodge Ram 1500 Cars & Trucks

2 Answers

tried to bleed brakes after replacing caliper-no brake fluid will flow out- is the master cylinder the problem?


Well, if you change a caliper or a brake line the fluid in the master cylinder should remain, even if the fluid leaks out.

However, if you are having trouble bleeding regularly, then use a vacuum pump with a 'can' or use a pressure bleeder (I prefer this method) that costs about $55 or so available on the Internet.

If you use a pressure bleeder, you'll need an extra master cylinder cap that has a hole drilled in it to accomodate the fittings of the pressure bleeder.

I know someone who had a Lincoln Continental that changed a brake line and had trouble bleeding it, and they used a vacuum pump and it bled easily using that method.

Some cars require that when you change the master cylinder, a brake scan tool is required to bleed the master cylinder that has air in it. But, if you did not replace the master cylinder, you should be able to use either the vacuum or pressure method to bleed the brakes easily.

Good luck on this repair.

Dec 18, 2010 | GMC Sierra 1500 Cars & Trucks

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