70 series hub help

Haha yes incorrect... that would be a Stroke of Genius how did you manage to get it in... lol
If I understand your question correctly flash would be my opinion but it's been a while since I missed with these too .
I'm sure your are going to get a lot more scientific replies good luck

Isn't a seal meant to stop rubbish etc getting in
Not the lubricant getting out ?





R

Seal is 3rd photo is in the correct way, Lyndon. Just need to press it a bit further until the steel part is flush with edge of the hub. That extra bit sticking out the top is for reducing dust/mud getting to the outer seal surface, I believe.

The small oil seal that goes into the axle housing should be flush with the end of the threaded axle bit.

Bob

Lyndon, the shoulder of the seal is normally fitted flush with the inside end of the hub.

But it pays to do a test fit with grease on the lip, to ensure the seal lips are running closely to the original spot they were running on, prior to disassembly.

Also, check the area the lips are running on to ensure that there's no grooves worn in the lip-running area, which will prevent proper seal operation.

If there are grooves where the seal lips ran previously, you may require the installation of a Speedi-Sleeve to provide a satisfactory running surface for the seal lips.

Cheers, Ron.

https://www.youtube.com/watch?v=5lmQE3_oiNQ

at the 5 minute mark shows seal being put in the other way, though unsure if it is exactly the same seal

I think you have it the right way as all the seals I have ever done have that flat edge of the seal on the outside as is shown in the pictures. As you have stated it just needs to be tapped in until that brass bit is flush. In the video below you can see the same seal and facing the same way as you have it at the 9:45 mark.
https://www.youtube.com/watch?v=l4R6T39u9TY

.
Well at least Lyndon, they are damned good photos. lol

Your seal is positioned correctly.

From my memory there are two types of seals for the rear hubs on a landcruiser. One which is flat and one with extended outwards extra rubber. The flat one is still current but more associated with older cruisers.

I believe the one with rubber extended outwards like you have is supposed to be more water and dust proof.

I have used both.

Hi Folks

Well the mystery is still yet to be solved.

The oil and grease issue is happening both sides. This took less than 5 thousand from last rebuild to occur.

The way I have the seals installed is correct.

I have an in-law that is service manager at one of the Toyota branches.

He suggested a blocked breather, yes, YES, I thought. It all makes sense now.
Nope, breather clear :-(

"Maybe it was the type of grease?" In his workshop they use CALTEX DELO GREASE EP 2

I thought that perhaps the grease I was using wasn't up the the exposed temperatures.
Caltex HTB 2. 200c rating. Mmmmm, well this has a higher rating than the grease Toyota are using in their workshop. Mmmmm

I see the one Toyota are using is Lithium based. Mine is not. Maybe it is mixing with the Grease during water crossings and creating the issues. Can't say I do a lot of water crossing though.....
Tried mixing a bit of the HT grease with boiling water, as I expected, didn't tell me much. can't really simulate pressure and temperature.

The rear of the axle where the hub seal runs looks ok.

Just maybe, i was sold the wrong oil seals, the 75 runs a 35 mm axle, the 78 series 36mm. Mmmm...

One thing I do know, I'm really not interested in replacing the Hand brake shoes every year, not to mention repacking the bearings etc etc. I'm quite capable of doing these things but don't have a set up workshop with a hoist, so it takes a WHOLE WEEKEND!

Regards
Lyndon