Replace Oil Pan?

Discussion in 'KJ General Discussion' started by revtune, Aug 1, 2009.

  1. revtune

    revtune New Member

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    Anyone have any information on replacing an oil pan on the 3.7L motor? Punched a hole in mine last night, and it was so late and dark, I couldn't get under to check it out. I'm at work now, so that's why I'm asking, and I did a search and no results. The motor is fine, I knew what happened right after I heard the thunk so I got the motor shut off in time.

    I did find a couple things online stating that the front axle had to be dropped to complete the job, and I was wondering if anyone could confirm that.

    Thanks in advance.
     
  2. J-Thompson

    J-Thompson Full Access Member

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    yup I think the front diff needs to come out
    maybe even the motor
    you may be able to lift it some to do the job not sure
    as bad as this sucks I bet you learned 2 things last night
    #1 dont go wheeling with out proper protection ,like having sex with out protection you never know what will happen
    #2 dont wheel at night
     
  3. flair1111

    flair1111 Full Access Member

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    sucks man. keep us posted about costs and all.
     
  4. revtune

    revtune New Member

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    The sad part is I wasn't even out wheeling. I was driving on a 25 foot section of dirt between two roads, only doing about 5 mph, and I drive across this spot every few days. The city has small reflective signs up, and I guess someone took one out, but the brush was covering what was left. If I had actually been out playing around (which I was doing just an hour prior) I wouldn't be so mad as I am right now about this whole thing.

    My family owns a motorcycle dealership, and one of our technicians used to work on 4x4's and performance cars. He just recently installed new gears, axles, and lift on my brother's Wrangler just a few weeks ago. He took a look at it and said he thinks he could get it done. So, we'll see after I get the parts in and we can take a closer look.

    Oh yeah, here's a picture...

    [​IMG]
     
    Last edited: Aug 1, 2009
  5. kj924

    kj924 Administrator

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    Wow :eek:
     
  6. RageOfFury

    RageOfFury Full Access Member

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    Ouch!! Poor KJ:(

    Fingers crossed that the technician can fix that for ya.
     
  7. revtune

    revtune New Member

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    I was just talking to him about it and I found the instructions from the service manual on how to do it. He has his doubts now, lol.

    I guess the front diff has to be removed and to do that a good chunk of the left suspension has to be removed so the axle can be removed, which would allow the diff to be pulled out. Then the motor has to be tilted up at the front so the pan can be removed through the front of the vehicle. I may take it to a dealership now...
     
  8. tjkj2002

    tjkj2002 Full Access Member

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    There are only 2 wyas to remove the oil pan in a KJ with the 3.7,you either have to pull the engine or drop the cradle and both are very labor intensive jobs which will not be cheap.
     
  9. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Ouch...:(

    The front skid would cover that....right???
     
  10. tjkj2002

    tjkj2002 Full Access Member

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    Yes
     
  11. Dave

    Dave Administrator Administrator Moderator

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    HOLY CRAP.......glad I got skids everwhere. Skids are priceless. Don't leave home without them.

    I wish you had them on before you hit that thing.

    Dave
     
  12. kj924

    kj924 Administrator

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    That really blows about the oil pan....so when are you ordering the skids? :rolleyes:
     
    Last edited: Aug 3, 2009
  13. flair1111

    flair1111 Full Access Member

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    ahh, itll buff out.
     
  14. J-Thompson

    J-Thompson Full Access Member

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    well maybe ,and that is a huge maybe, the picture is making it look worse than what it really is and you can fix it
    no lie
    I know a guy who got a good hole in the oil pan of a Trooper ,older body style
    same issue ,pull the motor to change the pan
    so he welded it ,bent a piece of steel as close to the shape of the pan as he could
    and mad a patch
    held for a while ,until he rolled it real bad and just trashed the rig
     
  15. Powerslave

    Powerslave Banned

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    Wow, when you said punched a hole in the pan, I was thinking, HOLE, not cave entrance...
     
  16. kj924

    kj924 Administrator

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    Yeah, you could change a main bearing thru that hole.:p
     
  17. ohaness

    ohaness New Member

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    Not sure what year your KJ is, but the 2002 FSM says to remove engine:

    " The engine oil pan is made of laminated steel and
    has a single plane sealing surface. The sandwich
    style oil pan gasket has an integrated windage tray
    and steel carrier (Fig. 75). The sealing area of the
    gasket is molded with rubber and is designed to be
    reused as long as the gasket is not cut, torn or
    ripped.

    REMOVAL
    (1) Remove the engine (Refer to 9 - ENGINE -
    REMOVAL).
    (2) Position the engine in a suitable engine stand.
    NOTE: Do not pry on oil pan or oil pan gasket. Gasket
    is integral to engine windage tray and does not
    come out with oil pan (Fig. 76).
    (3) Remove the oil pan mounting bolts and oil pan.
    (4) Unbolt oil pump pickup tube and remove tube.
    (5) Remove the oil pan gasket/windage tray
    assemblyfrom engine."


     
  18. Powerslave

    Powerslave Banned

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    What a load of work, just for an oil pan...
     
  19. Dave

    Dave Administrator Administrator Moderator

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    ^^^^Yeah, I wonder if there is any way to "adjust" that crater and weld a piece of metal over it???

    Just thinking.

    Dave
     
  20. kj924

    kj924 Administrator

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    In a situation like that, it's better to get that pan off and take a look at the crankcase area for small rocks and stuff that might be hiding in there.