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Brake Line Corrosion
Ford Trucks Ford Trucks (alt.trucks.ford)
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#1
 
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Brake Line Corrosion -
11-02-2006
, 08:34 AM
#2
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The front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. The truck has 78,500 miles on it and we have mild mid-Atlantic winters. The truck is not driven much in snowy winter. The lines going to the rear drums look fine and have been checked by the dealer and a second shop. The fittings going into what appears to be brass blocks actually rusted and lines right at the fitting was rusted. Ford has not responded to my questions. Has anyone else experienced brake failure due to corrosion of the lines for the front disc brakes on the F series? |
limited to Ford vehicles. I've replaced brake pipes on vehicles
as new as 1999 with about the same mileage as yours.
I think you did pretty good, my bought new and rust proofed 1985
F-150 suffered rotted brake lines when it was a little over 5
years old.
#3
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front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. |
What do you expect from writing to Ford concerning your 12+yr old
vehicle?
Dave S(Texas)
#4
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else experienced brake failure due to corrosion of the lines for the front disc brakes on the F series? |
to get new rubber. When they fail, and collapse internally, your brakes will
stick and run very hot.
#5
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Yup, replaced them when I replaced the rotors. It's a good idea anyway just to get new rubber. When they fail, and collapse internally, your brakes will stick and run very hot. One more thing.........while you're at it, I recommend you flush out that |
Synthetic DOT 3. I used Prestone brand.
#6
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The front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. The truck has 78,500 miles on it and we have mild mid-Atlantic winters. The truck is not driven much in snowy winter. The lines going to the rear drums look fine and have been checked by the dealer and a second shop. The fittings going into what appears to be brass blocks actually rusted and lines right at the fitting was rusted. Ford has not responded to my questions. Has anyone else experienced brake failure due to corrosion of the lines for the front disc brakes on the F series? |
So start with checking the brake fluid resevior and making sure the cap
is sealing tightly on the resevior and not allowing air access to it.
Then condensation inside the brake lines can occur and put moisture in
the brake system.
And finally, the flexible brake lines on most cars are of a rubber
material. The rubber when under water can absorb water into the fluid.
So all of those are ways to get moisture into the brake system causing
them to corrode from the inside out.
If this truck was not yours originally, I'd consider that maybe the
chassis was under water for a short period of time. Or if you cross
water with it or it was parked in deep snow, that could lead to the
external corrosion.
#7
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The front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. The truck has 78,500 miles on it and we have mild mid-Atlantic winters. The truck is not driven much in snowy winter. The lines going to the rear drums look fine and have been checked by the dealer and a second shop. The fittings going into what appears to be brass blocks actually rusted and lines right at the fitting was rusted. Ford has not responded to my questions. Has anyone else experienced brake failure due to corrosion of the lines for the front disc brakes on the F series? |
front. I think the problem is very common, but your location is unusual.
#8
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Brake fluid is Hydroscopic and absorbs water directly out of the air. So start with checking the brake fluid resevior and making sure the cap is sealing tightly on the resevior and not allowing air access to it. Then condensation inside the brake lines can occur and put moisture in the brake system. And finally, the flexible brake lines on most cars are of a rubber material. The rubber when under water can absorb water into the fluid. So all of those are ways to get moisture into the brake system causing them to corrode from the inside out. First off the rubber hoses were in pretty good shape for 78000 miles and 12 |
showed no discoloration which is indicative of water in the fluid. The
fittings and the metal tubing where it enters the fitting corroded, it
rusted. If it was stainless steel it was off-spec because I have never seen
stainless steel rust like iron. The metal line right at the fitting had
holes with is typical of galvanic corrosion resulting in pitting. The
pitting caused the failure. The rear lines look OK for a 12 years old
vehicle not driven much in snow and the road salts.
#9
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front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. So, replace them! No big deal....less than $40 for both front lines. What do you expect from writing to Ford concerning your 12+yr old vehicle? Dave S(Texas) Metal brakelines are not supposed to rust out. They are supposed to be |
engine. The rubber connector hose is a different story and oddly enough
they looked fine.
#10
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putt (AT) webtv (DOT) net> wrote in message news:3286-4549FD86-1367 (AT) storefull-3274 (DOT) bay.webtv.net... front brake lines on my 1994 F150 failed due to corrosion, as in rusting and the one line was preforated from pitting corrosion. So, replace them! No big deal....less than $40 for both front lines. What do you expect from writing to Ford concerning your 12+yr old vehicle? Dave S(Texas) Metal brakelines are not supposed to rust out. They are supposed to be formed from stainless steel or marine brass and should last as long as the engine. The rubber connector hose is a different story and oddly enough they looked fine. |
lines and certainly never seen one with marine brass brake lines (and making
brake lines from brass would not be a good idea - too great a chance of
metal fatigue). Maybe some high end cars may have stainless brake lines, but
stainless is hard to work with when you have to make bends and is subject to
stress cracking. All of the brake lines I have actually touched are double
wall low carbon steel with a zinc coating to prevent corrosion (other
anti-corrosion coatings include zinc - aluminum, or copper). This sort of
steel tubing is sometimes referred to as "Bundyweld" or "Bundy double wall"
tubing (see http://www.tiauto.com/bulktubing/double_wall.php ). Some
European cars (Volvo and Audi for sure) use "Cunifer Alloy" (90-10
copper-nickel alloy) for the brake lines, but I have never personally
touched one of these (see
http://www.copper.org/applications/a.../pdf/a8001.pdf ).
Ed
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