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Replacing Oil Pan Gasket F134

Discussion in 'Early CJ5 and CJ6 Tech' started by FredGarvin#6, May 15, 2025.

  1. May 15, 2025
    FredGarvin#6

    FredGarvin#6 New Member

    Sacramento...
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    Jun 1, 2024
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    I’m going to change the oil for the first time and I thought I would replace oil pan gasket since it’s leaking. I think it’s leaking unless it’s leaking from the main seal? Anyway my question is, do I have to take off the timing cover to replace the oil pan gasket? I’m worried about snapping the heads off the bolts as it is. I just snapped the head of a manifold bolt a week ago and finally reThanks
     
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  2. May 15, 2025
    jeepdaddy2000

    jeepdaddy2000 Well-Known Member

    Eagle Point oregon
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    No, the pan bolts to the bottom of the cover.
    If it is leaking from the rear main, then you will have to replace that also. If you suspect the RM, you might as well do that while the pan is off.
    Insure you inspect the oil pick up while you are in there. Clean as necessary.
     
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  3. May 15, 2025
    Militarymetal

    Militarymetal Member 2025 Sponsor

    Gainesville, Florida
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    I agree. If the main is leaking I’d replace that too. However, from under the vehicle it would be a tough job. I did it with the engine on a stand and it was still difficult. I actually pulled the crank when I did mine. I suppose you could possibly wiggle the main seal in with the crank slightly out, but it would be a bear—in my opinion.
     
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  4. May 15, 2025
    FredGarvin#6

    FredGarvin#6 New Member

    Sacramento...
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    I’m hoping it’s not leaking from the main seal. That’s a little out of my skill set.
     
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  5. May 15, 2025
    jeepdaddy2000

    jeepdaddy2000 Well-Known Member

    Eagle Point oregon
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    Replacement under the vehicle is doable and you don't have to "loosen" the crank with all but the most obstinate upper seals. There are a number of ways to get the upper out using pliers and/or picks. I'm sure there is a U tube video or two on the subject.
    i would insure it isn't. Even then, you would be miles ahead to have the replacement seal set on hand when you open it up just in case. If you wind up replacing the rope seal with a neoprene one, insure the bottom cap doesn't have a stake in it to keep the rope seal from spinning. If it does, be sure to remove it.
     
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  6. May 15, 2025
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2025 Sponsor 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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  7. May 17, 2025
    FredGarvin#6

    FredGarvin#6 New Member

    Sacramento...
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    Jun 1, 2024
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    Thanks you guys for all the great information. Thanks Pete for the information on Sneaky Pete, that looks like a handy tool. I’m probably going to order one. I pressure washed and scrubbed the engine yesterday and it’s pretty clean now. I removed the pan and I can’t tell if the main seal is leaking but I might as well replace it since I have the pan off.
     
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  8. May 17, 2025
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
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    I have found that a neoprene seal is easier to install when replacing it from under the vehicle. Otherwise I prefer a good quality rope seal..

    There are a lot of poor quality neoprene seals on the market, some are too tight and burn up right away.

    I have used a couple of the "Best" brand seals with good result.

    Dan Sharon has them on his site.

    https://jeep1942.com/?page_id=4123
     
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  9. May 17, 2025
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Nov 22, 2003
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    Have a close look at where the bolt holes in the pan- ensure they're nice & flat & not bulged upwards from someone torquing them too tightly. If they're bent they need to be hammered down or you won't be able a good seal with the new gasket.
     
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  10. May 18, 2025
    FredGarvin#6

    FredGarvin#6 New Member

    Sacramento...
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    I haven’t had a chance to remove the cap yet. I’m about to order the seals and I’m wondering where the two vertical seals go?
     
  11. May 18, 2025
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2025 Sponsor 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    On the outer two faces, between the cap and the block.
     
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