Master Cylinder Bleeding?
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Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
Master Cylinder Bleeding?
About to replace the master cylinder, calipers and flexible hoses on my 2000 E250 van using Ford OEM parts naturally. Any special steps I need to take when bleeding the system after all these new parts are installed?
Thanks!
Thanks!
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
https://www.ford-trucks.com/forums/1...es-system.html Maybe watch this vid.
Most important is to "bench" bleed the master cyl, preferably before fitting it. Often new master cyls come with the little pipes and instructions on how to do it.
Most important is to "bench" bleed the master cyl, preferably before fitting it. Often new master cyls come with the little pipes and instructions on how to do it.
Trailering
Joined: Sep 2005
Posts: 19
Likes: 0
From: Arkadelphia, Arkansas
bleeding
I am still surprised at the number of mechanics that still use the pump-em up method of bleeding the brake lines. Gravity bleeding to me is the best way. It can be done by yourself and it also serves to replace all the brake fluid in the system. A rarely thought of item, as brake fluid does eventually break down. When you gravity bleed, do one at a time till you get clean fluid making sure to keep the master cylinder full at all times.
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
I am still surprised at the number of mechanics that still use the pump-em up method of bleeding the brake lines. Gravity bleeding to me is the best way. It can be done by yourself and it also serves to replace all the brake fluid in the system. A rarely thought of item, as brake fluid does eventually break down. When you gravity bleed, do one at a time till you get clean fluid making sure to keep the master cylinder full at all times.
Trailering
Joined: Sep 2005
Posts: 19
Likes: 0
From: Arkadelphia, Arkansas
bleeding by yourself
Fill master to the top and leave open. Open one bleeder and let drain.To keep from making a mess it helps to put a hose on it and drop into container. If it doesn't start by itself you can bump the brake lightly to get the flow going. I've been doing it this way for 30 years. No "pump it up, hold" bs anymore. Master cylinder has to be a firewall mount. There are the rare, usually vintage that are under the floorboard. Feel free to ask if you need help.
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Fill master to the top and leave open. Open one bleeder and let drain.To keep from making a mess it helps to put a hose on it and drop into container. If it doesn't start by itself you can bump the brake lightly to get the flow going. I've been doing it this way for 30 years. No "pump it up, hold" bs anymore. Master cylinder has to be a firewall mount. There are the rare, usually vintage that are under the floorboard. Feel free to ask if you need help.
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Trailering
Joined: Sep 2005
Posts: 19
Likes: 0
From: Arkadelphia, Arkansas
This method removes all air. When there is no pressure on the pedal there is no pressure in the lines. I always have very firm brakes. All new fluid with no air. It works.
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