repeated brake problems!! fed up!!
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Senior User
Joined: Mar 2006
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From: south jersey
repeated brake problems!! fed up!!
i have an early 99 Super Duty F250 4X4 7.3 6speed......i have had a lot of issues with this truck and slowly but surley i am getting them straightened out as they come, but one that i cant seem to kick is problems with the brakes!!?? i constantly have tight brake calipers and in turn it eats up the pads and rotors....i know on my 86 F150 the petal went down too far so all you have to do is pull off the master cyl and adjust the push rod, but i am more familiar with the older trucks....so is there an adjustable rod behind the master cyl on the newer diesel that might be out too far and causing it to ride the brakes? does anyone have this problem or if anyone has any ideas as to what would be causing this i would really appreciate the help and info thanks so much!
Hotshot
Joined: Nov 2006
Posts: 11,286
Likes: 263
From: North of Greenville
Sounds more like you're having a problem with sticking slide pin(s) to me. With the hydroboost on our trucks (extra boost pressure comes from the power steering pump instead of a more conventional vacuum-based boost), there is not much pedal travel before the brakes get engaged.
Sticking slide pins are a known issue with our trucks' braking system, so I would pull the caliper and check those first. The pins are also an easy and inexpensive replacement item. If you do replace them, make sure to grease the pins lightly with a high temperature brake grease, but if you use too much grease, it can create a suction inside the slide pin socket and you'll end up with the same problem again just because the slide pins won't be able to slide.
To answer your question, though, I had to replace my master cylinder several years back, and I do not believe that the push rod is adjustable at all.
Sticking slide pins are a known issue with our trucks' braking system, so I would pull the caliper and check those first. The pins are also an easy and inexpensive replacement item. If you do replace them, make sure to grease the pins lightly with a high temperature brake grease, but if you use too much grease, it can create a suction inside the slide pin socket and you'll end up with the same problem again just because the slide pins won't be able to slide.
To answer your question, though, I had to replace my master cylinder several years back, and I do not believe that the push rod is adjustable at all.
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Senior User
Joined: Mar 2006
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From: south jersey
i dont think it is a slide pin because i just replaced all rotors, pads, and calipers problably only about 10k miles ago and the back driver is absolutley toasted and the rest arent much better....but when i did the brakes i even pulled the pins on the calipers to double check and regrease cause i dont trust many products right off the line haha......so i dont think it would be a slide pin that fast and i know about the system how it uses power steering pressure, and not a vacuum diaphram booster but im not super educated on the internals of that system which i dont know if there is an adjustment in there.....there isnt an proportioning valve in line somewhere that can be acting up is there? thanks for any info!
Hotshot
Joined: Nov 2006
Posts: 11,286
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From: North of Greenville
Ok... wasn't sure about how fluent you were with our system. As for a proportioning valve... that's digging in deeper than I have done myself, so hopefully someone else can chime in with a deeper knowledge for both of us (I'm always up for learning something new).
More Turbo
Joined: Apr 2011
Posts: 533
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From: santa rosa, ca
slide pins
i'll vote on the idea that it could be the slide pins. i've used too much grease and created that suction problem. i've used too little and it seams they almost seize themselves in. finicky... i think i've gone through two or three sets of rear rotors, numerous brake pads, and a few calipers.
Fleet Mechanic
Joined: Jul 2005
Posts: 1,800
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From: Southern Colorado
If you sense you have a dragging caliper at any given time, you might crack open the bleeder screw and see if fluid shoots out, indicating residual pressure in the system. This is just a troubleshooting step, but might point you in the direction of a fix.
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Elder User
Joined: Mar 2004
Posts: 580
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From: Chippewa Falls, WI
My vote, the slide pin issue. My left hung up, I was always pulling to the left, so I pulled the pins polished them up with a wire wheel and slobbered them up with antiseize and problem gone.
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Thread Starter
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Senior User
Joined: Mar 2006
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From: south jersey
I just don't see it being a slide pin cause even when a caliper is tight after i take it off to replace, the slide pins work fine. I've experienced a collapsed hose on other things, but they all seem fine by eye and feel, I may replace all anyway, I tired of throwing money out on brakes
FTE Legend
Joined: Aug 2004
Posts: 37,887
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From: North Central Rural Sask.
Have you had problems with that yet?
I need to replace a couple of calipers in my truck, and gonna check out the slide pins on the other ones, and was just reading a little on this, so thought I would bring it up and inquire.
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Senior User
Joined: Mar 2006
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From: south jersey
I never really thought to open the bleader on the tight on to check that, thanks for the tip Steve. I'll have to replace the pads and rotors then feel for a tight one, thanks for everyone's help so far, hopefully I can straighten this out soon!!!!!
Elder User
Joined: Mar 2004
Posts: 580
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From: Chippewa Falls, WI
Thought I read somewhere to NOT use anti seize, due to it not being able to handle the heat.
Have you had problems with that yet?
I need to replace a couple of calipers in my truck, and gonna check out the slide pins on the other ones, and was just reading a little on this, so thought I would bring it up and inquire.
Have you had problems with that yet?
I need to replace a couple of calipers in my truck, and gonna check out the slide pins on the other ones, and was just reading a little on this, so thought I would bring it up and inquire.
Anti-Seize Compounds : Loctite Silver Grade Anti-Seize Lubricants [Loctite Silver Anti-Seize] - $9.41 EMI Supply, Inc
Posting Guru
Joined: Jun 2002
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From: Panama City, Fl
Not a collasped hose but one that has broken apart on the inside and has loose hose material hanging inside stopping the return flow of fluid. The sometimes do not show as soft. The bleeder screw trick is an indication of rubber line issues.
