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I have an '02 F250 7.3 4wd and will be replacing the ENTIRE brake system soon (all 4 wheels, master cylinder etc). Could someone here who is familiar with the system post a list of ALL parts needed by chance? I have a rough idea but I don't want to miss anything. Thanks in advance!
M/C, 4 rotors, 4 calipers, pads, flexible hoses. New calipers kits should come with new slide pins.
Just to clarify, I've got petroleum based contamination in my brake fluid. So basically every brake part that has rubber in it has to be replaced as well. What other parts (including ABS parts) will need to be replaced?
Talked to two dealership parts depts as well as an independent shop. Dealerships weren't much help (seemed to know less than I did), and the shop was some help but didn't seem to know exactly which parts would be needed. Has anyone here dealt with a similar situation before?
In other vehicles - I have flushed systems in the past with denatured alcohol when changing over to/from silicone or synthetic fluids and that worked just fine along with replacing the hoses and rebuilding the master cylinder, calipers and wheel cylinders..
If you are intent on full replacement, you will need to see your Ford dealer for a new ABS pump and actuator assembly along with all those other parts.
Either way, you will need to flush the steel lines as well or replace them.
How long has the oil been in the system and how did you realize the issue?
The contaminant is ATF fluid and has been in the system since Friday afternoon, I realized the issue shortly after but the engine had already been run/brakes pumped.
In other vehicles - I have flushed systems in the past with denatured alcohol when changing over to/from silicone or synthetic fluids and that worked just fine along with replacing the hoses and rebuilding the master cylinder, calipers and wheel cylinders..
If you are intent on full replacement, you will need to see your Ford dealer for a new ABS pump and actuator assembly along with all those other parts.
Either way, you will need to flush the steel lines as well or replace them.
Will this fix the contamination problem? My only concern is having to do it all over again because of residual contamination in the ABS parts.
Will this fix the contamination problem? My only concern is having to do it all over again because of residual contamination in the ABS parts.
The denatured alcohol will remove the oil as well as all brake fluid from the system. If someone had just topped off the master cylinder with ATF, you may be able to just pull the master and rebuild it. It depends on the specific gravity of the ATF vs. Brake fluid. What is in the reservoir is actually mostly in reserve, there is really very little movement of fluid through the system as it just shuttles back and forth as the brakes are pressed. The only recirculation is in the master cylinder itself.
If you want to test the specific gravity the easy way, pour some brake fluid in a clear glass jar, then carefully pour about the same quantity of ATF into the jar. Over the next few hours, the heavier fluid will be on the bottom and you should be able to see that through the jar.
is this really that big a deal? woudlnt a agressive flush of the entire system with a gallon of brake fluid cure the problem. maybe open bleeders and keep filling the master, could even vaccum bleed
The denatured alcohol will remove the oil as well as all brake fluid from the system. If someone had just topped off the master cylinder with ATF, you may be able to just pull the master and rebuild it. It depends on the specific gravity of the ATF vs. Brake fluid. What is in the reservoir is actually mostly in reserve, there is really very little movement of fluid through the system as it just shuttles back and forth as the brakes are pressed. The only recirculation is in the master cylinder itself.
If you want to test the specific gravity the easy way, pour some brake fluid in a clear glass jar, then carefully pour about the same quantity of ATF into the jar. Over the next few hours, the heavier fluid will be on the bottom and you should be able to see that through the jar.
How long will it take for the contaminated fluid to reach the rubber components deeper in the system (beyond the master cylinder)?
How long will it take for the contaminated fluid to reach the rubber components deeper in the system (beyond the master cylinder)?
I don't know the answer to that. It would be mostly dependent upon the specific gravity of the oil. If the oil is heavier, it would continue to migrate down to the lowest point in the system. If the oil floats on top of the brake fluid, it may never migrate deeper.
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