Secret repair

Discussion in 'Bodywork' started by Dragon, Aug 20, 2008.

  1. Dragon

    Dragon Banned

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    How do you detect the body work had been repaired?

    Thought I saw a Merc body work expert use a metering equipment to measure the thickness of the paint above the metal work and if it displays ---- then there are filling underneath instead of metal work. :eek:

    How does this measuring equipment works? :D
     
  2. gina2201

    gina2201 Hardcore MB Enthusiast

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    Ummm, just as you described??
     
  3. OP
    OP
    Dragon

    Dragon Banned

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    I need more info that why I am asking. Where can I buy one of these equipment?
     
  4. Dieselman

    Dieselman Banned

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    They use a magnetic probe for ferrous applications and an eddy current probe for non ferrous ones. The strength of returned signal gives an accurate depth of coating over the metal.

    Ultrasonic ones can measure over plastic substrates as well.

    Why do you ask.?
     
  5. OP
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    Dragon

    Dragon Banned

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    Just curious. Wondering whether my cars had been to accident repair.
     
  6. Dieselman

    Dieselman Banned

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    A local bodyshop or your Merc dealer will measure the paint for you and advise.
    If it has been repaired there will normally be a number of tell tale signs, such as door shuts not being accurate and paint finish.
    What colour is it?
     
  7. OP
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    Dragon

    Dragon Banned

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    Terulit Silver. He said there is filling in the middle of the rear pillar. The finish is spotless.
     
  8. Alps

    Alps MB Club Veteran

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    being repainted doesnt mean its been in an accident, other telltale signs asdieselman described would tho.
     
  9. Dieselman

    Dieselman Banned

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    Nice colour.

    Who said.?

    p.s. I doubt anyone would weld the aluminium suspension parts, they would just replace.
     
  10. OP
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    Dragon

    Dragon Banned

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    Are you saying there shouldn't be any welding in aluminium parts?:eek:
     
  11. Dieselman

    Dieselman Banned

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    No, but it's unlikey they would be welded post manufacture. Welding aluminium isn't easy and replacing a component would be simpler.
     
  12. kjay

    kjay Hardcore MB Enthusiast

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    Or clocked.

    :D
     
  13. jaymanek

    jaymanek Authorised Forum Sponsor Authorised Forum Sponsor

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    dieselman will be happy to measure your paint!
     
  14. OP
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    Dragon

    Dragon Banned

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    It already done by the Merc dealer and I believe what he said. Just that it could he useful in future if I will to look for a second hand car to buy. Yesterday was the first time I found out about this paint measurement gauge. What kind of price range should I pay for? I don't need very accurate one, just be able to find filler repair work done, then I know it been in an accident and been repaired. :D
     
  15. jaymanek

    jaymanek Authorised Forum Sponsor Authorised Forum Sponsor

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    i think half decent ones cost over £200
     
  16. umedc

    umedc Hardcore MB Enthusiast

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    Right jay he was showing off at your place:D
     
  17. st4

    st4 Banned

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    A more serious point of repair maybe contained within the chassis.

    Get the vehicle on a ramp and get underneath it, check the chassis for welds/new metal etc to see if there has been a structural repair in the past. Paint thickness alone may not help. The usual spare wheel check may not either in the case on a front on collision where there has been no deformation @ the rear.

    A structural repair will effect crash performance adversely (arguably when you need the car the most). Minor body panel damage which has been repainted pales into insignificance when you look at this.

    http://www.youtube.com/watch?v=NWEdlUT17PI

    It explains my point better than I can type. This test was done @ low speed and whilst the effects where heightened imagine this crash @ 70mph+.
     
    Last edited: Aug 21, 2008
  18. login_user

    login_user Hardcore MB Enthusiast

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    I have one of those paint measuring devices,the same as the Merc body shop had.
    The thickness of the paint is between 90 to 130 microns pre repair and between 160 to 230 microns Pst repair.

    As long as a repair was done by a Mercedes approved bodyshop your warranty is still valid.
     
  19. Dieselman

    Dieselman Banned

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    Oops, sorry. Didn't mean to offend, just wanted to test it on as many cars as possible to see how effective it was.:eek:
     
  20. OP
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    Dragon

    Dragon Banned

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    Here are the pixs. Sorry about the angle of the shots. I am referring to the alum weldings around the arcs.
     

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