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ba10/5 rear oil seal replacement


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I have a leak I've been trying to ignore that is coming from between the TC and the ba10. It's leaking gear oil so it must be leaking from the transmission.

 

  • Before I order the seal, how hard is it to remove the TC from the transmission?

 

  •     -Do I need to drop the cross member or can I just unbolt it and pull it back? Any tips? 

 

  • Can anyone confirm that this is the seal I need 

 

        http://www.nolimit4x4.com/crown-automotive-ba-10-5-rear-oil-seal-83503250-manual-trans-output-shaft-seal/

 

  • Will I be able to replace the seal without having to open the transmission case? 

 

 

Thanks for your help

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You could change it by putting an AX15 in front of it.   :laughin: (Just kidding.)

 

You can drop the the tcase without removing the crossmember.  You just have to reach around it to get to the nuts that hold the two together.

 

To remove the crossmember, there are four bolts that hold the trans to it and four bolts that hold the CM to the frame rails.  Place a jack or some kind of support under the trans to hold it up.  Now, the nuts for the tcase are easy to get off.  

 

I don't know if that is correct.  They list it as fitting.

 

The hard part is getting the old seal out w/o damaging the output shaft.  To install, get a piece of PVC pipe that is the same diameter as the seal and tap it down w/ a hammer.

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Thanks,

An AX-15 would be great but I will drive it with the BA10 until it dies on me. 

 

I see that several sites list the seal as fitting but I've also run into issues where I've misunderstood the drawing and have ended up with a wrong seal. 

 

I've pulled the transmission many times to replace leaky slaves; I wish I had replaced this seal while I was at it.

 

Does the TC just fall off the transsmission after I remove bolts or does it need to go backward any? 

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There are six studs that thread into the tcase.  These studs go through the holes at the back of the trans.  Six nuts hold the trans and tcase together.

 

My experience with removing the tcase is that four of the nuts come off the studs.  The other two nuts/studs come out of the tcase.

 

The tcase slides backwards the length of the studs - approx. 1.5".

 

As for the seal, if you are not sure it is the correct part, go to a local parts store.  You my pay a little more than online, but you get immediately and return it immediately if it is the wrong part.

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