Rear axle extension tube oil leak.

As for removing the breather, all it requires is flexible fingers and arms, plus perseverance. If it was easy, everybody would be doing them.
 
I see the aforementioned breather on the differential of my spares automatic, but I don't recall one on the TC, and did have all that out during the rebuild.
As I mentioned above, at an early point in my Rover experience I overfilled the diff, and got leaks at the breathing slots on the stub axles.
 
I assume from the earlier description he means the seal that goes at the front of the extension tube behind the bit that mates to the prop...
 
593744 I think is the seal required so you do need to drop the cross member and release the prop shaft. Just dented my rear wing now bugger :oops: time for bed
 
rockdemon said:
I assume from the earlier description he means the seal that goes at the front of the extension tube behind the bit that mates to the prop...
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That's what I thought, until he started talking about dropping the diff and the crossmember out......
 
hawkit12 said:
593744 I think is the seal required so you do need to drop the cross member and release the prop shaft. Just dented my rear wing now bugger :oops: time for bed
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You might need to drop the crossmember, but in all the hundreds I've done, and they were a known problem when they were new(ish), I've never had to. Once you've dropped the rear of the prop out of the way, remove the flange,and prise out the seal.
 
Could it be that the exterior breather is not on early cars? I don't see it in my 1963 Parts book, or in the drawings in my ROM.
 
harveyp6 wrote,...
You might need to drop the crossmember, but in all the hundreds I've done, and they were a known problem when they were new(ish), I've never had to. Once you've dropped the rear of the prop out of the way, remove the flange,and prise out the seal.
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Hi Harvey,

In the few that I have done, no need to drop the pinion crossmember either.

Question,..why were they (the oil seal) a known problem when they were new(ish)? Was there a problem with the oil seal itself or was it down to the way in which they had been fitted or something else entirely?

Ron.
 
OrganDoctor said:
Could it be that the exterior breather is not on early cars? I don't see it in my 1963 Parts book, or in the drawings in my ROM.
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It wasn't, and there was a mod to drill the casing and fit one to cure oil leaks on the early diffs.
 
SydneyRoverP6B said:
Question,..why were they (the oil seal) a known problem when they were new(ish)? Was there a problem with the oil seal itself or was it down to the way in which they had been fitted or something else entirely?
Click to expand...

They always seemed to be prone to leaking. I think the later type with the "O" rings was developed to try to cure it, and TBH the later ones do seem better. There are other tricks to try to cure really persistantly leaky ones....
 
Thanks for that Harvey.

That would explain why the original pinion oil seal in my Rover required replacement after only 46,000 Miles (74,000km) in 1986. I took it to my local Rover dealer where it was changed. Sadly it required replacement again in 1991 having served for a further 53,000 Miles (85,000km). I then fitted the replacement which must have been of the improved type as this one continues to serve 22 years later, having so far covered 184,000 Miles (294,000km) during that time.

Ron.
 
Dead thread revival! I went to change the pinion extension housing seal yesterday so I could put my prop shaft back in, but I was foiled by what appears to be a large flat washer that sits on top of the seal. Are there any tips for getting this out without damaging it? Everything is pretty tight in there and even with a couple of hooks under the seal I wasn't able to pop it out.

In response to a few other comments in this thread, there is no need to drop the cross member out. With the prop shaft out of the way there is plenty of room to access the pinion and seal.
 
Hi Warren,

That sounds odd. Once the coupling flange has been removed, the oil seal should be sitting there waiting to be removed. No washer should be sitting in front of it, certainly of those that I have seen, there was never a washer as you describe.

Ron.
 
As Ron says there shouldn't be any washer there, all I can think is that someone has fitted a metal clad seal at sometime.
 
Oho! In that case it won't matter if I damage it getting it out, will it? Thinking a replacement for a big flat washer would be very difficult to find at short notice, I was anxious to not ruin it. A metal clad seal makes more sense, thinking about it.
 
You were right, chaps. The seal came out, with some difficulty, and it had a metal ring moulded into it.
 
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