Renewing the differential front oil seal

[badenstag]

https://www.facebook.com/reel/866098878855456/?s=single_unit&__cft__%5B0%5D=AZUqyLl_2FKo0GmoSZ4v _8t9yxokfUPT169Fwa9gtZ1mRlDXaWBqIixrsMTEm9Tn_X0-rMFEwWYhaPW5JkdRDqq3ZKdqXy00xRJ2p976o5s8qE4moIHmDw 39PXijEPwAXQDrD45Yosy-4NHsPrTBHE7aQ6MeNF3WxOPoeBfwvKc8euDlyQUhMZ36DKm7vy O7VorgbDhwR_3F0rfC3e7jHAPF&__tn__=H-R

Mostly, these reels are awful….. this one seems great.

Air chisel adaptor for removing oil seals.

Proper job for diff seal removal possibly… if you’ve ever tried removing an original?

texas twister!

maybe not enough space for it?

I have had to put serious effort into diff seal removal though.

a bit too expensive for me ... (https://www.mactools.com/products/lt855a)

[Klaus Schlueter]

IMG_8083.jpg This is much cheaper

[jbuckl]

IMG_8083.jpg This is much cheaper

The reel seems to show a home made adapter in an air chisel…. Working backwards.

thought it was a bit of genius.

[Chix]

I have so many questions...

I have a new diff to fit. Is there a gasket between the diff and the diff nose?

If I'm changing my diff, what seals or bearings should I also change? I can't really see where these are from any diagrams.

Klaus, that photo you just posted, is that an oil seal at the front of the diff? And is this the right replacement?

https://rimmerbros.com/Item--i-137346

Is it worth replacing the quill shaft itself, and the bearing, is that a diff nose off job, or just prop shaft off and tap it out?

Lastly, this video was very helpful in figuring out how to take the diff out:

https://www.youtube.com/watch?v=6B9-j7WTgGM

[jbuckl]

The original oil seal is very tight to remove.

Twin lip seals (nitrile) were previously available .

Have not seen those listed anywhere for a while….
anyone know of availability for those now?

[sujitroy]

I have a few videos on YouTube I created when working on my diff: Search triumph stag - diff

Is is the seal I used he on both my Stags in USA.

National part no. 471870.

[Klaus Schlueter]

Chix, some answers to your questions:

1. The parts catalogue doesn't show a gasket. I have used Dirko but it is hard to get off again. This time I used Blue Hylomar which can be wiped off with a solvent.

2. For an overhaul change the diff nose oil seal as shown in my picture and check the ball bearing in the diff extension (page 4-32 in the parts book).

3. The pic shows the seal in the diff nose. I managed to get it out with an appropriate srew driver and a hammer several times.

4. It is a diff+extension out job. Replacing the quill shaft? That depends how it looks like. If there is a grove from the oil seal lip you could tap the new seal 2 mm further in or use a speedy sleeve.

Hope that helps.
Klaus

[Chix]

Chix, some answers to your questions:

1. The parts catalogue doesn't show a gasket. I have used Dirko but it is hard to get off again. This time I used Blue Hylomar which can be wiped off with a solvent.

2. For an overhaul change the diff nose oil seal as shown in my picture and check the ball bearing in the diff extension (page 4-32 in the parts book).

3. The pic shows the seal in the diff nose. I managed to get it out with an appropriate srew driver and a hammer several times.

4. It is a diff+extension out job. Replacing the quill shaft? That depends how it looks like. If there is a grove from the oil seal lip you could tap the new seal 2 mm further in or use a speedy sleeve.

Hope that helps.
Klaus

That is really helpful info thanks!!

I'll let you know how it goes...

[Rigid]

Bumping - so much for my advice on page 1...
I've spent the last few months slowly refurbishing my rear end inspired by oil dripping from the front of the diff.
After spending too much time waiting to repair a frayed diff mounting bracket yesterday I refilled the diff with EP80/90 and got ready to refit.
This morning there is a pool of oil.

I replaced the pinion oil seal with a new nylon-style seal after taking out the leaking metal/leather version.
Before fitting I checked for grooves/marks on the quill shaft - nothing visible, nothing feelable.
Any advice/ideas?

EDIT - ignore the above.
Because there was so much oil I had a rethink and realised the seal only works if it seals on both edges!!!.
For any other numpties out there - do not carefully fill the diff through the filler hole BEFORE installing into the car.

[mole42]

I always have used leather lip oil seals for the diff, on 2000/2500 and Stag as per manufacturers fitment. Never had any leak. Chris Witor has them.

[torque2me]

I always have used leather lip oil seals for the diff, on 2000/2500 and Stag as per manufacturers fitment. Never had any leak. Chris Witor has them.

Same here but one needs to soak the leather type in oil for 24 hours. Any oil type will do!
Kev

[sujitroy]

I didn't have much luck with a leather seal. I now have a regular seal in both stags. So far so good.