Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

Bleeding A Slave Cylinder...

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  #1  
Old 03-23-2014, 03:43 PM
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Default Bleeding A Slave Cylinder...

So I know this is a common thread topic all across the internet but I am stumped. I have tried every idea on the web except for fully submerging the slave and the master and pre bleeding the system before it is on the actual truck.

Im stumped. And getting frustrated. I had pressure on the pedal last time I tried. Enough to make the pedal return. But then when I tried to bleed it to make it a little better, I lost everything.

Any ideas to make this pain in **** a little easier? I just wanna drive my truck!
 
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Old 03-25-2014, 09:08 PM
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this really is a pita. I replaced my master, slave, and line a few months ago. you'll hear a dozen different ways to do it. best way I've found is to put it all together, fill her up, and open the bleeder valve to let it free flow. close the valve, then pump it, pump it and bleed it like you would brakes. the bad thing about pump bleeding the clutch is , it will bubble whatever air is in the system. then the fluid will get milky. let her sit over night and you'll have air again in it again in the morning when it settles. usually to get it right I bleed it in two sessions , once a day for two days. you can also run a hose from the valve on the slave to a bottle or bucket so long as it's submerged in brake fluid. and pump until all the air is gone. just make sure you keep fluid in the master
 
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Old 03-26-2014, 01:28 AM
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Wouldn't gravity bleeding do it, without having to pump bleeding it after? I did my brakes with gravity the other day, and adjusted the drums, and they're working like never before. If you want another way you could buy a hand pump at your local parts store for around $20 and they'll have a setup for bleeding with a little catch can that collects all the fluid that you pump out.
 
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Old 03-26-2014, 07:33 AM
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What do you mean by gravity bleed?
 
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Old 03-27-2014, 12:15 AM
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What 93 said at first, put everything together and crack open the bleeder, it's how my old auto shop teacher in high school said he did his brakes and clutches by himself. Make sure the reservoir is full with the cap resting on top. If your cap is on tight then you'll create suction on top and it won't flow. So I just set the cap on so nothing falls in, full reservoir and bleeder open. As he would put it, go inside drink a "7up" while watching your favorite sports, and every few commercials go check the level and top off. Once the game is done, tighten the bleeder and top off once more.
 

Last edited by powerstrokin350; 03-27-2014 at 12:19 AM.
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Old 03-27-2014, 07:23 AM
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Hmm thats interesting. That doesnt seem like it bleed all the air out just from it sittin there and dripping. But its definetely worth a try since everything Ive been trying, Ive had no luck with.
 
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Old 03-27-2014, 02:33 PM
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In reality ... You need two people doing this .... One in cab, one under truck ..... Depress clutch and slowly open slave .... The close and release the clutch ... Repeated as necessary.... Always works ... My $.02
 
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Old 03-28-2014, 01:45 AM
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You can actually do it by yourself under the truck, just push on the fork with one hand and crack the bleeder with the other. You will get a better bleed that way as you can move the fork further by hand than by pressing the pedal. Do a few pumps then check the fluid, as the reservoir is small and you move a lot more fluid this way. I learned this after 3 hours of pumping the pedal with no results.
 
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Old 03-28-2014, 07:38 AM
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I didnt think you could depress the slave all the way by just pushing on the fork. I will have to look at it tonight. Hopefully it works because I'm getting sick of doing it haha its been about 6 times already
 
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Old 03-28-2014, 11:00 PM
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You are pushing forward on the fork, towards the front of the truck. Pull it back as far as you can, which wont be very far and then push as far forward as you can. There isn't a whole lot of movement, but it seems to get the job done quicker than any other way I have tried.
 


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