Oil Leak questions

Discussion in 'Freightliner Forum' started by Jayrod075, Aug 29, 2015.

  1. Jayrod075

    Jayrod075 Bobtail Member

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    I have an 02 Columbia and boy does this thing have a leak.... We're using close to 4 gallons a week....

    It looks like my biggest leak is between the trans/engine. Assuming it's the rear main seal but won't know until the trans is out. If I have a mechanic pull the trans to do the job what else should I have him change in the process? Assuming the clutch and throw out bearing but I want to make sure I don't miss any seals or parts that could cause me issues in the near future.

    You guys that have had this work done, how much should I expect to pay in labor?

    Second leak seems to be somewhere on the front drivers side of the engine but haven't been able to pinpoint anything yet. And then third which could be the nightmare looks like a small spot around the blow by hose. Not sure if it's just being slung around from the rear main and showing there but what's the best way to test if I'm due for an inframe? Compression check?

    Thanks for any info...
     
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  3. xsetra

    xsetra Road Train Member

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    What brand of motor. I have read in some of these threads, to change mounts when trans is removed. The leak you talk about someone suggested it may be leaking on the side of the block and showing up in the rear. Good luck.
     
  4. Jayrod075

    Jayrod075 Bobtail Member

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    Aug 29, 2015
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    It's the Detroit series 60 motor. The only reason I know it didn't start in the front and run to the back in this case is because the leak in the rear was there before this newer leak in the front appeared. Thanks for the info though!
     
  5. Techtim

    Techtim Bobtail Member

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    I do check for this issue. Steam off the engine then have die in engine and run for up to 30min not moving. Then if die shines with black light even 1/2 inch then the fly wheel housing seal needs replaced. It could alos be head or any other gasket leaking. Just remember if flows back and down. And look where it is wet
     
  6. Techtim

    Techtim Bobtail Member

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    Sorry ment to say 1/2 above the pan gasket.
     
  7. Jayrod075

    Jayrod075 Bobtail Member

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    Thanks, didn't know you could put dye in oil. I'll have to look into that.. Thanks for the tip!
     
  8. Techtim

    Techtim Bobtail Member

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    Np i work at a dealership and do it all the time. Just check what color the dye looks like under light and make sure engine dye. Some are one bottle to every 5 gal. Sometimes i double..
     
  9. Techtim

    Techtim Bobtail Member

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    Oh if you get you clutch done make sure the gap between bearing and clutch is 1/2 in. And you fork gap is 1/8. A lot of guys do not do this right. You can buy the tool to measure gaps. If they do it right you will almost never need to do linkage for proper clutch brake. Also warranty will not cover if not adjusted right. Eaton does tear apart clutches and look at wear patterns
     
  10. GrapeApe

    GrapeApe Road Train Member

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    Before you pull the trans, check the rear cam plate and valve cover. It could also be the flywheel housing leaking. Before you use dye, be sure to steam every thing really good, it makes it so much easier to see. The typical leak on the drivers side top front is the diamond seal, but it could be valve cover or front cover as well.
     
  11. Techtim

    Techtim Bobtail Member

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    Just think of it this way it could be worse you can be driving an MBE engine lol
     
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