2004 - 2008 F-150

*** Soft Brake Pedal Resolved ***

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  #196  
Old 04-07-2008, 09:24 PM
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Originally Posted by Tom in CT
...It "uses" up the vacuum in the booster...
Absolute!
 
  #197  
Old 04-07-2008, 10:10 PM
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I'm adding Baer Eradispeed +1's here shortly. I'll keep you posted as to how this affects my spongy feel.

If it doesn't help, I'll definitely do the 3/4 turn adjustment.
 
  #198  
Old 04-08-2008, 08:38 AM
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Well, pumping the brakes with the truck off definitely worked - no vacuum whatsoever when removing the master cylinder. I gave the actuator a 1/2 turn and on the test drive the pedal definitely firmed up. Afterwards, I checked the temp of the front rotors and they were very hot. So, I applied the parking brake, put it in neutral, jacked up the passenger side and the wheel turned but there was definitely some rubbing. Then I started the truck and I couldn't turn the wheel at all, so I just put the actuator back to its original position. This mod didn't work for me. Too bad.
 
  #199  
Old 04-08-2008, 11:15 AM
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Originally Posted by 051fdrof
I gave the actuator a 1/2 turn and on the test drive the pedal definitely firmed up. Afterwards, I checked the temp of the front rotors and they were very hot. So, I applied the parking brake, put it in neutral, jacked up the passenger side and the wheel turned but there was definitely some rubbing. Then I started the truck and I couldn't turn the wheel at all, so I just put the actuator back to its original position. This mod didn't work for me. Too bad.
If you want to give it another go, definitely keep in mind that the SMALLEST adjustment can make a HUGE difference! Try turning it just 1/4 of a turn, or less. if this doesn't help, you may have a different problem in your braking system.



Originally Posted by rms8
All it takes is that rod being a 1/16" too far in to give the pedal the wrong feeling.
Originally Posted by rms8
As far as the tiny bit of adjustment goes, as I stated early on in the post, every 1/16th" makes a dramatic difference.
Originally Posted by rms8
So, again, a word of caution when performing this, just take your time and by all means DO NOT make large adjustments. Make very tiny adjustments. As I stated before, less than a 1/16” is a HUGE difference in this area. HUGE!


edit:
on 2nd thought, if your brakes were already clamping down with just a 1/2 turn, you are correct in that this may not be the fix for you. Just my 2cents....:o
 

Last edited by rms8; 04-08-2008 at 01:26 PM.
  #200  
Old 05-24-2008, 06:41 PM
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Awesome !!!!!!!!!!

Wow, what a difference this made! Another happy customer with an '07 SuperCrew. Had the double pump issue since new. Got tired of it and bought a MOTIVE power bleeder (well worth the investment - what an great tool). Anyway, after spending this afternoon bleeding all 4 corners (made no difference) I thought I would hop on here to see if it was a common problem and happened across this post - what a godsend!

It truly is an easy fix... one of those caveman deals. Reading all the posts, I do have another tip too. I would suggest taking your rig out for a test drive before making any changes. Make it a drive that doesn't require alot of braking so when you get back to your garage you can do a quick check of the rotor temps. That way, after you've made the adjustments you can take another test drive and make sure your pads aren't dragging. I started by going 3/4 of a turn and ended up having to run it back in 1/4 turn to get it just right. It really does make a day and night difference.

1). With vehicle off, pump brakes a few times to release vacuum.

2). Unbolt 2 master cylinder nuts and swing master cylinder out of the way. Make sure "O" ring is still in place where the master cylinder and booster mate.

3). You will see the rod end - to make things easier to get to, I pushed the brake pedal in and propped it with a stick so I could get to the rod a little easier.

4). Holding rod shaft with pliers, I backed the end of the rod out (counter clockwise) what ended up being a 1/2 turn. It doesn't sound like much, but believe me it makes all the difference in the world !!!

5). Reinstall master cylinder and test drive.

Thanks again for making this original post - I have hated my brakes since the day I brought this thing home !!!!! Now they are great !!!!!!
 
  #201  
Old 05-26-2008, 01:01 PM
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Originally Posted by dforeid

…Wow, what a difference this made! Another happy customer with an '07 SuperCrew.

...and happened across this post - what a godsend!

…It truly is an easy fix... one of those caveman deals

…Thanks again for making this original post - I have hated my brakes since the day I brought this thing home !!!!! Now they are great !!!!!!

You are VERY WELCOME !!!!!!!!! Glad it worked for you! As anyone with an ounce of sense can see, this fix has helped countless people on this forum!

Any immature, negative comments from mkosu04 ? Yeah, that's what I thought.
 
  #202  
Old 06-02-2008, 09:52 PM
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After 6 months, multiple trips, contact with the dealership owner & his calls to Ford engineers & threatening to take my $80K annual business to Chevy...I seem to at last have a firm pedal. Didn't get to talk to the Service Dept head and get the exact fix (answering machine message mentioned some sort of "breakthrough" service ticket shows new booster. I'll see what more info I get later. I actually thought something was wrong with it on the ride home, cuz every time I stepped on the brake- the van slowed down


It's had improvements before, that didn't last long, so my complete approval is still pending.
 
  #203  
Old 06-07-2008, 07:53 PM
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Is there any chance someone could post pic's? I just replaced my rotors and pads, they do feel better, but still a little "soft". Any pic's would be great. Thanx in advance.
 
  #204  
Old 06-07-2008, 09:48 PM
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Talking couldn't wait

It was pretty simple, thanx to this post. I took some pic's and will try to post them. Seems to have helped alot. After I removed the MC, I used some nail polish to lightly make an orientation mark on the screw, and then proceeded. Small turns, about 1/3 rotation, test drove, tried again, 1/3 turn. For a total of 1 full turn. I need to give it a good once over though just to be sure/safe.
 
  #205  
Old 06-07-2008, 10:16 PM
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Master cylinder


Master cylinder in place



Master cylinder removed and pushed aside, gently.



Actuator rod w/ nail polish mark for orientation.
 
  #206  
Old 06-08-2008, 11:08 AM
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Originally Posted by justjack
It was pretty simple, thanx to this post. I took some pic's and will try to post them. Seems to have helped alot. After I removed the MC, I used some nail polish to lightly make an orientation mark on the screw, and then proceeded. Small turns, about 1/3 rotation, test drove, tried again, 1/3 turn. For a total of 1 full turn. I need to give it a good once over though just to be sure/safe.
Glad to see

>>> A N O T H E R <<<

successful, satisfied DIY'er!!!!!!!!!!!!!!!!!

Great pics too! Just one thing, I'd definitely keep an eye on it for a while. One full turn seems like A LOT.
 
  #207  
Old 06-08-2008, 11:19 AM
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I took the truck for a ride first thing this morning and the front rotors seemed a little hotter than they probably should have been. I turned it back 1/4+ turn , test drove the truck, and they seem to be fine. I will continue to keep an eye on them though, just to be sure.
 
  #208  
Old 06-08-2008, 03:58 PM
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Thanks rms8....Worked like a charm. I now have brakes.
 
  #209  
Old 06-08-2008, 05:12 PM
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One of the best mods I made concerning brake feel is installing some SS brake lines. Here is a picture of Russell SS brake lines next to the Bilstein shocks.



Also, I would like to know if there was some spec as to what the clearance between the MC and rod is. You might, with the proper tools, be able to measure the gap and reduce the chance of having to little clearance.
 
  #210  
Old 06-09-2008, 11:00 AM
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Originally Posted by Mach-1
Thanks rms8....Worked like a charm. I now have brakes.
You're VERY welcomed.

It's very strange how some here have had Zero issues with their brakes, yet others (such as us) were plagued with the soft pedal from day 1.

Odd.
 


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