Re: Front Rotors
"Agave" <firstname.lastname@example.org> wrote in message
> Kev5150 wrote:
>> I have a 03 F-250 SD with about 38,000 miles on it. When I put the
>> brakes on, the front end shakes terrible. I am assuming my rotors are
>> warped and was thinking about taking them off and having them turned.
>> Should I also replace the pads as well or should I be looking at
>> something else for this problem?
>> Just started doing this and want to take care of it before the snow
>> Any help is very much appreciated.
>> Thanks Kevin
> This is not to discount what anyone else has written. You should
> follow that advise as you see fit. In my case, it wasn't the normal
> things you'd neccessarily look for that were causing the same problem.
> The culprit was the brake line itself. At some point...I think it was
> when the wheel bearing was going bad...the left front brake line was
> heated and the rubber inside the stainless steel braid had
> deterioriated. The fluid would flow near normal to the caliper, but
> would be slow on the return causing the brake to bind. What made it
> hard to diagnose was that there was no visible markings on the
> exterior of the brakes line, nor was the flow noticeably different to
> the brake. It took my top knotch mechanic to figure out what the real
> problem was. If it turns out not to be the rotors, calipers, or pads
> you may want to look into it being the brake line.
> 01 F350 PSD Crew Dually
A quick test will determine if it is a deteriorated brake line. Let
vehicle sit for a couple of minutes to allow brake line pressure to
neutralize, raise the wheel off of the ground, spin it, note the
resistance felt. With someone else sitting behind the wheel, spin it
again. Have them apply and release the brake. You should be able to
immediately spin the wheel with about the same resistance felt earlier.
If more drag is felt, check further. Another test is to just crack the
bleeder after the brake has been released. If pressure remains in the
line, the inner line is failing. Actually, this situation is a lot more
common than you would think. Any halfway decent mechanic knows about