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oil pump leak

Discussion in 'Early CJ5 and CJ6 Tech' started by juffer, Jan 22, 2009.

  1. Jan 22, 2009
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

    Netherlands
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    Jun 16, 2007
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    210
    Hi,

    I hava a leaking oil pump. It starts leaking this week. I read the articla on this forum about rebuilding an oil pump. Oil preasure is OK and there is no gasket between it. When putting a gasket I think the clearance will be higher , resulting in lower preasure. Is there a sealant what will cure the leaking? Ore does it not need anything between the metalparts ( housing and cover):?


    Thanks

    Juffer
     
    Last edited: Jan 22, 2009
  2. Jan 22, 2009
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2020 Sponsor 2019 Sponsor

    cordele, Ga.
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    The FSM for 225 shows a gasket on the oil pump. I have one on mine (no leaks) and the thickness of the gasket is more than likely factored into design so as to maintain proper oil pressure.
     
  3. Jan 22, 2009
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

    Netherlands
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    OK, but I read all kinds of procedures with clearance specs etc. So I thought a gasket is causing more clearance and was wondering if original it has a gasket or not. I ordered a repairkit from Rockauto.com . So I will see what I get and try to fix it. I hope it will work with a gasket because I do not have confidence in getting it leakfree without one. Thanks for the information. Did you also replaced the gears?
     
  4. Jan 22, 2009
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    I don't know that much about the V6, but on other V8 engines with a similar design of oil pump, the gears actually stick out of the housing by a few thousandths of an inch. Without a gasket, the gears will be grinding into the oil pump cover. The gasket thickness is part of the design.

    No gasket cement! Just the gasket!
     
  5. Jan 22, 2009
    sparky

    sparky done Staff Member Founder

    Toowoomba, QLD
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    Yes, you are correct.
     
  6. Jan 22, 2009
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
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    I suppose it's possible the thicker trans oil couild have caused this leak
    might check your oil filter for bulging as well.
    unless of course, it was leaking prior to the other incident
     
  7. Jan 23, 2009
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

    Netherlands
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    The leaking was already going on. Therefore I added ( wrong ) oil. I will take it appart and do some measurements. I think the former owner already had oilpump problems because there is no gasket. I ordered a repairkit. and see if I can flaten the cover. and do some preasur test.

    Finaly thought all the problems were cured. Well I could have known it after 10 years JEEP
     
  8. Jan 23, 2009
    sparky

    sparky done Staff Member Founder

    Toowoomba, QLD
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    If it's a problem with the cover the Melling girdle works well for fixing that problem easily and cheaply.
     
  9. Jan 28, 2009
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

    Netherlands
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    I opened the pump. Cover was in very god shape. New gasket, gears ,and pressure is OK. I did the trick filling the system with a drilling machine. Works great. Very nice this forum with so many innovative ideas

    Thanks for the tips


    ps. filled it with 15-40 enige oil.
     

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