Rear Main Seal oil pan threads stripped?

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Nolan
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Rear Main Seal oil pan threads stripped?

Postby Nolan » Wed May 20, 2020 6:34 am

Hello,
Yesterday I got my 1948 Farmall cub almost all the way assembled and got it running. I Checked the timing and a few other things, when we were done checking the timing I noticed a few drips of oil on the ground under the bell housing, the rear main seal is brand new and was installed by tst so I do not think that is the issue I followed his instructions on how to reinstall the seal and retainer including to put thread sealant on the fly wheel bolt i put a bead of # 2 gasket sealant on the new oil pan gasket were it meets the retainer. I believe one of the threads on that retainer ( in the bottom for the oil pan) are stripped is that where it is most leaking oil from? can you repair those while its no the tractor? Do I have to split the tractor again.
:lost: :help:
Thanks in advance.

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raystractors
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Re: Rear Main Seal oil pan threads stripped?

Postby raystractors » Wed May 20, 2020 7:50 am

You will have to split, or at least part way. The retainer can not be reached at a 90 degree angle.

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Re: Rear Main Seal oil pan threads stripped?

Postby tst » Wed May 20, 2020 8:43 am

the retainer has deeper holes than the factory bolts that are used so if you stripped the threads try a little longer bolt in the to catch the unused threads

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Nolan
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Re: Rear Main Seal oil pan threads stripped?

Postby Nolan » Wed May 20, 2020 9:06 am

tst wrote:the retainer has deeper holes than the factory bolts that are used so if you stripped the threads try a little longer bolt in the to catch the unused threads

Okay Thank you,
Do you know about how long of bolts I can fit in there ? I believe the other side was stripped too and I took of the lock washer and I think I got a thread or 2. I will go to the hardware store and pick some up and hope that that fixes the oil leak.

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Re: Rear Main Seal oil pan threads stripped?

Postby tst » Wed May 20, 2020 9:59 am

two different oil pans were used, you can get bolts at least 1/4" longer, maybe longer depending upon the pan

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Re: Rear Main Seal oil pan threads stripped?

Postby Nolan » Wed May 20, 2020 10:48 am

Ok sweet thank you Tim!

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Re: Rear Main Seal oil pan threads stripped?

Postby outdoors4evr » Wed May 20, 2020 11:15 am

Being accessible from below (the bottom threads) I don't see why you couldn't just tap it with a bigger bolt size.
Careful though with the bolt tightening, it is just aluminum!
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Re: Rear Main Seal oil pan threads stripped?

Postby Peter S » Wed May 20, 2020 12:29 pm

outdoors4evr wrote:Being accessible from below (the bottom threads) I don't see why you couldn't just tap it with a bigger bolt size.
Careful though with the bolt tightening, it is just aluminum!


If you can get at it from the bottom, then just fix it properly with a heli-coil.
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Re: Rear Main Seal oil pan threads stripped?

Postby Slim140 » Wed May 20, 2020 12:37 pm

Peter S wrote:
outdoors4evr wrote:Being accessible from below (the bottom threads) I don't see why you couldn't just tap it with a bigger bolt size.
Careful though with the bolt tightening, it is just aluminum!


If you can get at it from the bottom, then just fix it properly with a heli-coil.
outdoors4evr wrote:Being accessible from below (the bottom threads) I don't see why you couldn't just tap it with a bigger bolt size.
Careful though with the bolt tightening, it is just aluminum!

You can barely get to them from the bottom with the tractor together. You have to use a swivel on a ratchet with an extension to tighten them. Don't think there is a way to retap or helicoil them without a split.
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Re: Rear Main Seal oil pan threads stripped?

Postby Cubfriend » Wed May 20, 2020 1:07 pm

Not a straight shot. The bellhousing or torque tube is in the way.
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Re: Rear Main Seal oil pan threads stripped?

Postby Barnyard » Wed May 20, 2020 2:57 pm

Go with the longer bolts. If that don't work then you are only out the cost of the bolts. Try the longer bolt in the hole that is stripped out first.
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