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load sensing valve for the DOE test

  • 01-11-2016 02:03PM
    #1
    CharlieZeroOne
    Registered Users, Registered Users 2 Posts: 290 ✭✭


    hi there, I have a 3.5 ton 4 wheel drive truck, its called a bremach t-trek. At the moment im working on the brake system.

    1BcZvwY.jpg

    It was fitted with a load sensing valve on the rear brakes, however the valve was bypassed with a hard-line, no flexi pipe, so therefore I'm going to have to do a bit of work to make that right.
    What im wondering is, does a 3.5 ton truck need a load sensing valve, legally, for the DOE ?
    It's going to be a camper with a load that remains constant (the camper box), so in practical terms I dont think it needs it, however I'm unsure what the DOE people will say.
    Any advice appreciated, regards,
    Redd .


Comments

  • #2
    Testacalda
    Registered Users, Registered Users 2 Posts: 463 ✭✭Testacalda


    Redd4 wrote: »
    It was fitted with a load sensing valve on the rear brakes, however the valve was bypassed with a hard-line, no flexi pipe, so therefore I'm going to have to do a bit of work to make that right.
    What im wondering is, does a 3.5 ton truck need a load sensing valve, legally, for the DOE ?

    It's going to be a camper with a load that remains constant (the camper box), so in practical terms I dont think it needs it, however I'm unsure what the DOE people will say.
    Any advice appreciated, regards,
    Redd .

    Well most vehicles will have a load sensing or brake proportioning valve, even a little Renault Clio!

    The purpose of the valve is to vary presure depending on the laod being carried. Dont forget that this can be dynamic load as well as static, so just because your camper is more or less the same weigh all the time, does not mean that the valve serves no purpose.

    As far as testing is concerned, a tester will test what is there. If the valve is on the chassis and is bypassed or connected but still seized and not working you will fail.
    If you remove it and re run the lines with out it, some testers might not notice, but most will id imagine. If it had it from new, you really should still have it. Being an oddball truck you push the argument of a grey area, but best to have what you should


  • #3
    CharlieZeroOne
    Registered Users, Registered Users 2 Posts: 290 ✭✭CharlieZeroOne


    cheers bud for the reply and the info. yah I think ill probe refit it, your not the first person to think it a good idea.

    regards


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