Quillshaft bearing

[stagwingnut]

Hi gents ,when changing the Quillshaft bearing , I see no need to touch the rear circlip , as I see it ,just remove the front one .is this correct gents or am I missing something ? Reguards Graham

[dasadrew]

That's correct. As long as it looks ok and not buckled or whatever.

[Goldstar]

Is that the area most of my diff oil is likely to be leaking from?

[staginhiding]

Hi Paul,The shaft itself wears and just renewing the seal doesnt always work..that is the usual oil leak..

Is that the area most of my diff oil is likely to be leaking from?

[Goldstar]

Hi Paul,The shaft itself wears and just renewing the seal doesnt always work..that is the usual oil leak..

Hi Sam, so change bearing and cross fingers? Thanks I'll give it a go

[davidf]

Try to get a leather seal, rather than a standard one. This one was recommended in another thread.

http://www.chriswitor.com/proddetail.php?prod=137346L

[Mike Stevens]

The diff oil should never get as far as the quillshaft bearing. The oil seal is just inside the diff itself, but the quillshaft bearing is just behind the prop flange. You need to separate the diff and its extension to get to the seal.

If you have an oil leak from the bearing, it means that the seal isn't (sealing that is). A common reason is due to pressure build up because the breather is gunged up. In my experience, when the seal leaks, the oil coming through the bearing washes the grease out of it, thus requiring its replacement.

If I've come into this thread half way and have stated the bleedin obvious, then I apologise!

Cheers,
Mike.

[StagnJag]

Try to get a leather seal, rather than a standard one. This one was recommended in another thread.

http://www.chriswitor.com/proddetail.php?prod=137346L

I had a rubber seal in mine that wasn't leaking at all. I replaced it as I was doing a diff rebuild and I put a leather one back in. Around 6 months ago. It is Pi$$ing oil everywhere and I will be changing back to a rubber one very soon! From personal experience I wouldn't go for a leather one.

Rgds

Dave

[DJT]

For anyone doing, or about to do this job, you may find that the bearing surface is grooved after 30-odd years of wear. You can get double-lipped seals that are better. I don't have any part numbers, but if you take the original seal into a bearing supplier they will be able to advise.

Dave

[staginhiding]

I wish i still had some of the old quill shafts I have changed to show you the wear mark on the shaft itself,long since binned.
Its pretty obvious if you look at the shaft to see if its worn.So if the bearing has had it and the shaft worn the seal wont do its job its just overloaded with oil..

Hi Sam, so change bearing and cross fingers? Thanks I'll give it a go

[dasadrew]

I had a rubber seal in mine that wasn't leaking at all. I replaced it as I was doing a diff rebuild and I put a leather one back in. Around 6 months ago. It is Pi$$ing oil everywhere and I will be changing back to a rubber one very soon! From personal experience I wouldn't go for a leather one.

Rgds

Dave

Out of interest Dave, (as I've got a leather one in mine now) did you go through the 24 hour oil soak procedure before fitting the leather one?

[StagnJag]

Nope!
I wasn't aware that you were supposed to! I smeared some oil around it before I installed it, but that was it.

[dasadrew]

I picked that up on this forum, but in hindsight it would perhaps be useful if Chris Witor could put a remark on his site.

EDIT: have just sent an eMail to Chris Witor suggesting the above note if he agrees that it is the correct fitting procedure

[dasadrew]

Just got an answer back from Chris Witor (quick!). He says that he can see no need for this soak as it is running in oil (differential) the moment it's installed.

Each to his own I guess. My diff is still empty, so I'm happy I soaked it first.

Maybe one of the old hands who originally posted the soaking tip has another angle on this?

[StagnJag]

When I replaced the original seal with the rubber one, I left it slightly sticking out of the end of the diff so it was running on a different part of the quill shaft. I guess the leather one I put in must be near or on the slight groove where the original one was. It could be that I suppose.