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Fixing rust on brake pipes.

  • 08-09-2012 07:33PM
    #1
    CiniO
    Registered Users, Registered Users 2 Posts: 16,069 ✭✭✭✭


    I have NCT next week.
    I looked at my car down from the pit to make sure everything is in order underneath, and I can see a tiny traces of corrosion on brake pipes.
    They are really tiny, and I would be surpriced if NCT tester failed me for this, but to be sure, I thought I clear it with sand paper and paint it.

    What I'm wondering though, if NCT tester seing brake pipe was painted won't fail for this???
    Is repairing brake pipes like that acceptable, or would he be allowed to fail a car argumenting it that brake pipes were repaired?

    NCT manual says only the following:
    ITEM
    REASONS FOR FAILURE
    Brake Pipes, Flexible Hoses
    1 Perished, kinked, damaged or rusted to the extent that the pipe is pitted.
    2 Unsatisfactorily mounted/possibility of failing.
    3 Leaks.
    4 Fouling moving parts.
    5 Bulging under pressure.
    6 Inadequate repairs or unsuitable fittings.

    What do you think?


Comments

  • #2
    enumbers
    Registered Users, Registered Users 2 Posts: 552 ✭✭✭enumbers


    this is impossible to comment on without seeing the car but in general is is not a good idea to clean any significant amount of rust of brake lines as it affects the integrity of the line which could burst in a emergency situation best advise would be to replace the line.


  • #3
    gk5000
    Registered Users, Registered Users 2 Posts: 885 ✭✭✭gk5000


    Spray a bit of WD40 on it and see what it looks like then.


  • #4
    Mycroft H
    Registered Users, Registered Users 2 Posts: 9,313 ✭✭✭Mycroft H


    Was there pitting?


  • #5
    CiniO
    Registered Users, Registered Users 2 Posts: 16,069 ✭✭✭✭CiniO


    BX 19 wrote: »
    Was there pitting?

    No.
    Just a tiny bit of surface rust. I managed to remove most of it with a dry cloth. But there is still small bits left.


  • #6
    Mycroft H
    Registered Users, Registered Users 2 Posts: 9,313 ✭✭✭Mycroft H


    Instead of painting them, I'd get a fine grit paper, sand back the rust to metal and leave it be for test. Paint them for your own piece of mind after the test if you want.


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  • #7
    CiniO
    Registered Users, Registered Users 2 Posts: 16,069 ✭✭✭✭CiniO


    BX 19 wrote: »
    Instead of painting them, I'd get a fine grit paper, sand back the rust to metal and leave it be for test. Paint them for your own piece of mind after the test if you want.

    That's sound like a great idea... That's my job for Monday evening then. Test on Tuesday morning ;)


  • #8
    Mycroft H
    Registered Users, Registered Users 2 Posts: 9,313 ✭✭✭Mycroft H


    1000 grit sandpaper should do the trick


  • #9
    CiniO
    Registered Users, Registered Users 2 Posts: 16,069 ✭✭✭✭CiniO


    BX 19 wrote: »
    1000 grit sandpaper should do the trick

    I eventually had to use 100 grit, as 1000 would be more just like for polishing.
    While clearing it I removed all paint on that stretch (maybe 2 inches) and made sure there was no rust left.

    As you adviced I left it like this for NCT, and I mentioned to the tester, that I left it like that intentionally for him so he could see it was clear off rust and allright. He said it was allright, and passed my NCT.
    I'm going to paint it to secure it later now.

    Thanks for advice...


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