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I honestly don't know about bleeding an anti-lock system. I am quite sure though that you need a power bleeder or something to do it. I don't think you can just do it like you would a non anti-lock system.
I am sure someone with more knowledge on the subject than me will be along to help you soon!
I figured on changing the Master Cyl fluid first but was worried I may cause a problem if I started bleeding the old fashion way. Brakes is not something to mess with so I wanted to be careful. Money is tight so if it was easy I was going to do it. If not I guess I will have to dip into savings.
Brakes is not something to mess with so I wanted to be careful.
Don't do what I did. I got distracted (kids) when I was finishing up bleeding and left the box wrench on the bleeder. When I turned the wheel pulling out of my driveway for the "road test", the wrench cut the brake hose. Used the e-brake to get back in the driveway. I suppose changing the hoses wasn't a bad thing, just not the way I did it.
As long as you have fluid in the master cylinder when you start bleeding, you'll be fine. Start from the farthest wheel and work toward the master cylinder, and keep a routine check on the fluid level so you don't bleed it all out. Keep that reservoir topped off. And have whoever is pumping the brakes to do it slowly so as not to aerate the lines.
2011 Ford F150, 3.7L, Company Truck
Even if you get the entire kit - don't put fluid in the bleeder tank. Just use it for pressure.
1. Remove as much old fluid from your master cylinder as you can without going all the way to the bottom and allowing air in.
2. Refill with fresh fluid
3. Install Motive cap and pressurize system to 20 psi.(don't go over or you could damage something)
4. Open bleeder screw and allow fluid to run out. The pressure will push it out without any peddle pumping. Just have a friend watch the master cylinder to make sure you don't go too low on fluid.
5. Remove Motive cap and refill and go to the next wheel.
Two seperate mechanics told me today that they can be bleed the old fashion way and to keep fluid in it. The told me the ABS pump would still have old fluid but it does not hold much fluid. Both mechanics told me bleed the brakes and then find a gravel spot or dirt spot and stab the brakes making the ABS engage. This would push out the old and in with the new. The minute of old fluid would mix with new. They did say to do it totally right to buy the kit but they said it is not totally necessary.
Well got them bled and I have never seen brake fluid that dark in any of my vehicles. I drained each one into a 12 ounce clear cup and the fluid was almost black. I did each one until it ran clear. Took almost a full quart to get them all but its done and hopefully saved me some costly reapirs or brake failure in the future.
While I worked on the did a radiator flush and changed the thermostat. Glad I did the thermostat was stuck partially open. I thought it was being a little cold blooded the past few months.
If anyone needs to do this it was pretty painless other than the wife complaining about pumping the pedal so much.
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