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Detroit Series 60 Valve Cover Leak.

Discussion in 'Ask An Owner Operator' started by rahtek, May 18, 2017.

  1. May 18, 2017 #1
    rahtek

    rahtek Light Load Member

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    I'm looking at this truck with a 1998 detroit series 60 but it is leaking oil from what seems like an oil supply to the valve train. 470k miles on it.

    The oil is coming from the tube right underneath the hot coolant return line. I scraped the oil so it's harder to see. The top of the valve cover was filled with dryed oil

    Anybody have any idea what this cold be?

    Any help would be appreciated
     

    Attached Files:

    rahtek, May 18, 2017
    rahtek, May 18, 2017
    #1
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  3. May 18, 2017 #2
    Ridgeline

    Ridgeline Road Train Member

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    Looks like a breather tube to me, not a supply hose.

    I have never seen a Detroit 60 that didn't leak.
     
    Ridgeline, May 18, 2017
    Ridgeline, May 18, 2017
    #2
    cnsper and 123456 Thank this.
  4. May 18, 2017 #3
    rahtek

    rahtek Light Load Member

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    Yeah that more sense. I'm looking for my first truck and slowly developing a system of looking them over.

    Learning a little with every truck I look over.

    Is the engine building too much pressure?
     
    rahtek, May 18, 2017
    rahtek, May 18, 2017
    #3
  5. May 18, 2017 #4
    swaan

    swaan Road Train Member

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    Its just your blowby tube.

    Just tighten the clamp a little.

    Nothing to be alarmed about
     
    swaan, May 18, 2017
    swaan, May 18, 2017
    #4
  7. May 18, 2017 #5
    rahtek

    rahtek Light Load Member

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    Thanks for the input guys.

    I took some other pictures of things that looked a little off.

    What do you do guys think about the gap in the knuckle where the rubber seal is coming off. Is that going to hurt anything?

    The picture of the pressure and temp gauge are at idle.
     

    Attached Files:

    rahtek, May 18, 2017
    rahtek, May 18, 2017
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  8. May 18, 2017 #6
    fortycalglock

    fortycalglock Road Train Member

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    pressure looks fine for warm idle to me. Temp could be good or not, just depends on how long it's been idling and how hot it is. Could have bad thermostats, but that's a cheap easy and common fix. As far as the kingpin seal (I believe that is what your pic shows) goes, jack up the axle, take a bar and put it in a wheel hole putting pressure on the brake drum and see if it the spindle moves. If it does, you're looking at kingpins and alignment.
     
    fortycalglock, May 18, 2017
    fortycalglock, May 18, 2017
    #6
    6rider Thanks this.
  9. May 18, 2017 #7
    Bigrayon

    Bigrayon Road Train Member

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    You right after that leak King
     
    Bigrayon, May 18, 2017
    Bigrayon, May 18, 2017
    #7
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