Correct way to install Front Diff seal (1 Viewer)

[stiebertw]

Ive got an 03 LX 470 that I replaced both CV Axles on. I purchased new seals along with the axles, part # 90311 47027, but when I went to install it, it was way to small. So me not having the correct seals, I installed the new axles with the old seals. Doing some further research on this forum, I see there could possibly be two different size seals. So, Im going to order part #90311-47013 and #90311 47027, can someone please confirm that these two part numbers are correct and in fact there are two different size seals for driver/passenger? The old ones are now leaking, and need to be replaced.

Second and main question, what is the proper way to seat the seals in the front diff? Ive seen two different ways people do it. Ive seen CHOWCARES on youtube install the seal to where the main seal is flush with the outermost axle, with the seal lip extended out. If this makes sense at all.

And I've found this on the forum.

Front diff leak - Requesting advice

I want to first say I've read all the posts I could locate on this subject :) I recently purchased a 2005 LC with 220k miles. I installed OME 865 springs and cranked the T bars 1" to lessen the rake (still have 1.5" and droop is good) Shortly after this change the passenger side front diff...

forum.ih8mud.com

They seem to have to top seal portion flush with the outermost part of the axle. It seems the seal is pushed flush with the second lip inside.

Whats the correct depth to push the seal in for Driver and Passenger? Thanks

 

[TheForger]

part #90311-47013 and #90311 47027, can someone please confirm that these two part numbers are correct and in fact there are two different size seals for driver/passenger?

Yes, yes, and yes they are different sizes.

@NLXTACY makes an awesome tool specifically for this purpose as it will not let you drive it in too far. Allows you to seat it right where it needs to be to almost guarantee no leaks. I wish I had one when I did mine. You can read about it here:

New IFS Output Shaft Seal Tool - Absolute Wits End

I documented the drivers seal install in my thread here:

Wheel Bearing Service w/Pics

 

[stiebertw]

Yes, yes, and yes they are different sizes.

@NLXTACY makes an awesome tool specifically for this purpose as it will not let you drive it in too far. Allows you to seat it right where it needs to be to almost guarantee no leaks. I wish I had one when I did mine. You can read about it here:

New IFS Output Shaft Seal Tool - Absolute Wits End

I documented the drivers seal install in my thread here:

Wheel Bearing Service w/Pics

Thats a pretty awesome tool, wish it was available now. Im probably going to change the seals right when the seals come in. The tool kind of gives me a bit on insight on how the two seals should be installed. By the looks, the drivers side is set in flush with the inner lip, with the flange portion even with the exterior surround on the axle. The passenger side looks like it would be install flush, with the body of the seal even with the outer housing and the flange portion protruding out.

 

[bridgeburner]

I had a CV replaced today and they reused the existing seals. Should I get this addressed immediately?
To be fair I supplied the parts and didn’t realize I needed to do the seals.

 

[stiebertw]

Thats a pretty awesome tool, wish it was available now. Im probably going to change the seals right when the seals come in. Front the pictures and past forum posts, I think the Drivers side won't be as bad because it has that inner lip for reference. Its the passenger side I want to get right. Any advice for the passenger side? I believe I press it in where the seal body is flush with the outermost diff housing, so that would leave the flange part protruding. Any ideas? Thanks

I had a CV replaced today and they reused the existing seals. Should I get this addressed immediately?
To be fair I supplied the parts and didn’t realize I needed to do the seals.

I had a CV replaced today and they reused the existing seals. Should I get this addressed immediately?
To be fair I supplied the parts and didn’t realize I needed to do the seals.

Over time your seals will harden, slightly loosing the ability to properly seal. I’d say if they aren’t leaking, your good to go. If they are, might look at changing them out. Id assume your mechanic took a look at them, at least I’d hope.

 

[bridgeburner]

Over time your seals will harden, slightly loosing the ability to properly seal. I’d say if they aren’t leaking, your good to go. If they are, might look at changing them out. Id assume your mechanic took a look at them, at least I’d hope.

Let’s hope they did.