[Fot] Leaky Pinion seal - follow-up

[Scott Janzen]

so, the upshot of this was that the pinion seal is not leaking a drop.  However, old gaskets and Redline synthetic must not like each other too much, as it seems like the thing is just leaking along the front gasket and bolt holes where the carrier bracket bolts on.  I did not renew this one when I had the diff apart.  Breather vent is open.  
Another project for another time!
 
On Jun 9, 2015, at 8:05 AM, Bill Tobin wrote:

I agree with Bob about the breather in the diff. I drilled and tapped the breather hole for a fitting and ran a -4 breather hose up and around the frame. Seems to work.
Bill
----- Original Message ----- From: <rkramer3 at austin.rr.com>
To: "Scott Janzen" <sjanzen at me.com>; "Chip Collingwood" <chip at theukmotorsports.com>
Cc: "'Friends of Triumph' Triumph" <fot at autox.team.net>
Sent: Monday, June 08, 2015 12:18 PM
Subject: Re: [Fot] Leaky Pinion seal


> Diff's can build pressure if the little cotter pin is clogged and force oil past the seals. I try to buy the best seals I can because the cheap rubber parts placed in bags by our suppliers seem to be crap. Speedie Sleeves aren't big enough to cover the whole surface so locating them is a high priority. I have never installed one where the surface was so poor that
> I has to use sealant below the sleeve. I have used Permatex No2, the semi-hard stuff on the splines in an attempt to seal the splines but I still get oil under the washers that drips out when I separate axles and drive shafts.
> 
> Bob Kramer
> rkramer3 at austin.rr.com
> 
> ---- Scott Janzen <sjanzen at me.com> wrote:
>> I did put a speedi-sleeve on it - good tight fit, with some permatex under it to make sure that didn't leak - as the surface had some wear marks.  I marked everything and re-assembled as it was to maintain the same pre-load; the diff was removed from the car so this was not difficult to do, and there was no wobble - i.e., the preload setting was good.  I'll check to see if it was migrating from the nut - interesting possibility, though I'm pretty sure from the visuals that it is at the seal.
>> Using Redline gear oil, 85 weight.
>> 
>> On Jun 8, 2015, at 11:31 AM, Chip Collingwood wrote:
>> 
>> Scott,
>> 
>> How was the sealing surface on the front flange? If that is damaged or is worn then a speedy- sleeve might help. Also possible is I have seen leaks from the behind the pinnion nut...oil migrates up the shaft past the splines and out from behind the nut and washer...assembling with a little silicone helps this. Did you get the flange back on in the same attitude as it was before dis-assembly....in other words did you mark the flange and shaft and tighten the nut to the same spot....this is what sets the pinnion pre-load and depth
>> 
>> Chip Collingwood
>> theukmotorsports.com
>> (804) 564-1839
>> 
>> On Mon, Jun 8, 2015 at 11:11 AM, Scott Janzen <sjanzen at me.com> wrote:
>> I had a leaky pinion seal on the GT6 differential, and figured I had remedied it by putting in a new seal and a speedi-sleeve this winter. Guess what?  It's leaking more than ever.
>> 
>> Any thoughts on a better fix?
>> 
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