Egr Maintenance

Discussion in 'Freightliner Forum' started by mgrantes, Jan 26, 2015.

  1. mgrantes

    mgrantes Light Load Member

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    2006 Columbia Detroit S60 14L 740k Odm.
    First, I'm a believer in preventative maintenance. Every now and then I'll read something on here that the egr system has to be maintained. So my question is what all is included in the egr system and how do I go about maintaining it? Do I need to clean certain components or is it more of a remove and replace with new thing?
     
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  3. bad-luck

    bad-luck Road Train Member

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    I dont think it would be worth the trouble of taking it apart to clean it. Its a bear of a job.
     
  4. Sustanon

    Sustanon Light Load Member

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    Yes,on a pro star,the both seats need to come out so they can open the floor just to get to the egr.If there is no smoke,coolant leak,and no codes its all good.At least thats how the company i work for maintain it.
     
  5. Ok big boy

    Ok big boy Bobtail Member

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  6. x#1

    x#1 Road Train Member

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    i can tell you that a new egr cooler/tank is around $1400 for the 14l. clean it driver.clean it.extend the life of it-
     
  7. simon999

    simon999 Light Load Member

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    I had this done on my previous freightliner, had to remove turbo to get access to egr valve. The bolts on turbo and egr valve usually are seized so you have to heat them. Then clean egr valve with decarb cleaner.
     
  8. barroll

    barroll Road Train Member

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    Dunno. Made a thread asking the same thing about 2 months ago and couldn't get a good reply from anyone.

    My EGR valve is so well rusted onto the cooler tank that there is no way I could take it apart to clean it anyway. Probably a good sign both should be replaced.
     
  9. mgrantes

    mgrantes Light Load Member

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    I'm getting the same feeling Barroll (no offense towards anyone who already replied). I just thought that with all the hoopla surrounding egr issues that there would be more knowledge on the subject. However, it seems like most simply opt to bypass the system versus "maintaining" it...whatever maintaining is supposed to mean. Simon999 your reply seems promising. Did you notice any performance improvement after you sprayed your valve with carb cleaner? Also, what type of engine? X#1 I'm trying to learn how to clean it buddy, but is the valve all there is to maintain? I'm sorry if that's a noob question but I'm terribly unfamiliar with egr. If I have to remove the turbo then that's something I'm NOT looking forward to - all bolts are rusted to hell and back.
     
  10. Helowrenchturn2

    Helowrenchturn2 Medium Load Member

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    If you look on the frint of the valve facing the radiator you will see a teardrop shaped plate with one 10mm bolt holding it on. With that cover removed you can see the little flapper inside. Take a screwdriver and gently move it back and forth and make sure it moves freely without grabbing. Then you can spray carb or brake cleaner in to help clean it. That's about the extent of the maint you can perform on that valve without removing the entire thing. You can also remove both Venturi tubes and clean them as well. The delta p sensor can be remove and cleaned also but be careful when removing and replacing the bolts, the base that it sits on is plastic and easily cracked. Make sure it isn't cracked and you can also find online a replacement stainless steel base if you are so inclined.
     
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  11. barroll

    barroll Road Train Member

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    Don't forget to mark where that flapper was and return it to its original position. If there is any slop in its movement it indicates a bad valve.

    I gleaned that from many hours of technical bulletins on the EGR that were more computer reading than actual maintenance, life most things on trucks these days.

    The biggest thing I've seen a potential for debris issues in are the two hard lines going up to the delta P. While the venturi and crossover tube will get sooted up, I don't think it really made a huge difference in their overall diameter. However, apply the same coating to those two delta P hard lines and you're probably looking at double digit percentages for diameter reduction.
     
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