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Old 09-12-2013, 02:23 PM   #1
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Finally changed transmission oil!

87 manual, TBI, 2.5l

I've had the jeep for over year and have been putting off changing the transmission oil because of two reasons. 1) the fill plug is above the skid plate and looks impossible to get to, and 2) my 4x4 shifter knob was seized (i thought) so I couldn't remove the boots to fill it fromt there. I couldn't take it anymore because I have a slight leak and I was worried I might run low on oil. I also have no idea if it has ever been changed. The shifter knob miraculously came off and I was able to complete the job.

Just to help others out.....

Below is the fill plug. It is the hex head in the center of the picture. It is on the passenger side of the transmission and above the skid (you can't tell in the picture):
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Below is the drain plug. You can't miss it. Bottom and forward of the skid. The fill plug is back above the skid (not the torx head in the picture):
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I noticed on other threads that people were confused on how to remove the shifter. It's simple once you figure it out. I don't know if this applies to newer yj's.
Once the boots are removed you have a rubber dust cover thing. Pull it up and off the shifter. Be careful it will rip. Mine was ripped where someone had removed it before:
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This is where people get confused. You have to push DOWN on the INNER ring part of the base and turn it counter clockwise until it unlocks and pops up:
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Just pull the shifter up and out. There is your fill hole. Be careful not to overfill it. Haynes says 3.5qts. (saw somewhere else 3.3)
Only 3qts came outof mine. Does anyone know if that is normal...if some doesn't come out? If not I guess it leaked 1/2qt. or burned it. The oil smelled horrible. I don't know if it was burnt or just extremely old.


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Old 09-12-2013, 02:25 PM   #2
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oh, and found this in the drain pan. It's about 1 inch in diameter.
Anyone know what it is? Should I be ready for catastrophic failure? The only problem with the transmission is sometimes when downshifting to 3rd I have to slow down and/or clutch a few times.

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Old 09-12-2013, 02:30 PM   #3
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Quote:
Originally Posted by JJYJ View Post
oh, and found this in the drain pan. It's about 1 inch in diameter.
Anyone know what it is? Should I be ready for catastrophic failure? The only problem with the transmission is sometimes when downshifting to 3rd I have to slow down and/or clutch a few times.
Looks like what is left of a E clip
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Old 09-13-2013, 12:37 AM   #4
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ok, thanks.
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Old 09-13-2013, 12:46 AM   #5
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Your probably better off without that thing swimming in your oil
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Old 09-13-2013, 12:49 AM   #6
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But the big question is where did it come from and when will affect the trans????
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Old 10-11-2013, 04:44 PM   #7
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I changed my trans fluid a couple weeks ago. There was a thin paper looking gasket on the drain plug. I was careful when removing it and reinstalled it. However, I now have a very small leak at the drain plug, a drop or two overnight. I'm assuming the little paper gasket is the culprit. I've looked, but can't seem to find a gasket for the plug. Would Teflon tape work, or some type of o-ring?
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Old 10-11-2013, 05:46 PM   #8
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Dumb question but did you try tightening it again? I don't remember seeing a gasket on mine. Is the plug the same size as the oil pan plug? They have gaskets for them. Or you can make one out of a thin piece of rubber. I made one for my oil cap on the valve cover.
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Old 10-11-2013, 05:55 PM   #9
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Dumb question but did you try tightening it again? I don't remember seeing a gasket on mine. Is the plug the same size as the oil pan plug? They have gaskets for them. Or you can make one out of a thin piece of rubber. I made one for my oil cap on the valve cover.
Yes, it gave it crank with the wrench, but it still seeps a bit. It's bigger than the oil plug, the trans plug is 24mm. I'll make a gasket out of a bike tire tube and try that. I guess Teflon tape wouldn't hurt either?

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