DDECIV injectors, is it possible to only pull the solenoid?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by bigguns, Jan 15, 2021.

  1. bigguns

    bigguns Road Train Member

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    Is is possible to remove only the solenoid on one of these injectors under a shade tree or does it require special tools.
    I have a nearly new set of injectors. One has taken a dump. I’m curious as to whether the solenoid went bad or something in the injector.
    If I can r&r the solenoid I may not need to pull the jakes and reset them.
     
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  3. Smellfunny

    Smellfunny Road Train Member

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    Yes you can. You need the gasket kit for it though. Detroit PN 05236116
     
  4. Smellfunny

    Smellfunny Road Train Member

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    I don't do that though. I install a new injector. Why do the job twice if it isn't the solenoid?
     
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  5. jamespmack

    jamespmack Road Train Member

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    Solenoid will normally throw a CEL. Mechanical fault will not. Yes they can be changed. Think its torqx, or anti theft torqx screw head.
     
  6. bigguns

    bigguns Road Train Member

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    Do it for tits and giggles. Try to learn a little something. If I can remove only the solenoid without messing with the jakes I would then fire it up to see it the problem is mechanical or electrical. If it runs ok with a different solenoid I won’t go through all the trouble of pulling the jakes, injector and then replacing everything. First I need to see if I can remove the solenoid without removing the jakes. The injectors only have about 5-6 thousand miles on them.
    Then I would want to see if the reman facility tells me bad fuel so my problem or yes it is electrical.
    Supposed to be 2 years and no questions asked. When I requested a replacement injector I was told “that never happens”. Really? Your injectors are flawless? A friend’s Cat lost an injector from the same place before 300 miles. He was told “that never happens”.
    I smell a problem in the near future. Maybe they will make good on it.
    No names so don’t ask. I want to let this play out first.
     
  7. Rideandrepair

    Rideandrepair Road Train Member

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    My solenoid was leaking, never threw a code. It was leaking bad. Sometimes the little screws break, or come loose, causing them to leak. If you have to take one of the 3 jakes off, it’s pretty straight forward. No need to reset it after. You can take 2 of the 3 jakes off, and take off 1 rocker. Change injector, and put it all back together without doing an overhead or adjusting jakes. Just make sure the bad injector is at full height. Get the correct height adjustment tool, and check it first, before taking rocker off. Change injector, setting the height correctly. Put it back together. Be sure to keep everything in the same order. Rocker has to go back on the same way, for oiling. Keep bolts in order. Rocker and jake bolts look alike, but are slightly visually different, near the top. Torque rockers evenly till snug. Final torque the ends first. I think it’s 80 or maybe 100 lbs on rockers and 100 on jakes. As long as the heights set correctly on the new injector, good to go, everything else will stay in adjustment.
     
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  8. bigguns

    bigguns Road Train Member

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    I believe your torque numbers are high. I”ll double check when I do it.
     
  9. Rideandrepair

    Rideandrepair Road Train Member

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    I’m pretty sure it’s 80 and 100. If you have to take a Jake off, it’s simple, only 3 bolts. I think the one odd bolt gets final torqued first. I should have said, after changing injector, and putting rocker back on, lastly set and adjust the injector height. You would need to know which injector is bad, beforehand, and bar engine over till the bad ones at full height. I’ve changed 2 of them that way. Without doing the overhead afterwards. I don’t think solenoid goes bad often, aside from leaking. Injector harness might be bad, if it wasn’t replaced already. If you decide to change injector, there’s a few other things to consider. Mainly draining the head of fuel, or sucking the fuel out of cylinder, while injectors out. If fuel is drained, you may need to pressurize the fuel tanks to get it primed afterwards.
     
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  10. AModelCat

    AModelCat Road Train Member

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    If I remember it correctly, the bolts holding down the jakes need to go back in their original location. One bolt has a narrower body and that is how the jake assembly gets its oil feed. Mix them up and the jakes won't get oil properly.
     
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  11. pup

    pup Light Load Member

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    Also be sure to blow out the threaded holes in the cylinder head. They're blind holes that fill with oil once you remove the jake bolts.
     
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