[Mg-t] XPAG TB TC TD TF Rear Crank Oil Seal Leaks

[Clive Sherriff]

Bill,

There are of course two other places, and also and a couple further ways, 
where the oil may leak into the clutch housing.  The places are the core 
plug at the rear of the Cam rear bearing, and the blanking screw into the 
main oilway.

The latest seal from Moss might be an improvement. Lets hope so, but 
properly set up the original set up should loose almost no oil whatsoever. 
But that means having good mostly long lost engineering skills to fit the 
oil thrower (Moss pt no 433-410) by hand scraping it, which are not found in 
many engine rebuilders these days, as they simply assume anything out of a 
box must be new and therefore just needs fitting as it is .........     In 
your dreams my boy on an XPAG !!!

And the other two?

A third possibility of course is the fitting of the breather plate on the 
top of bell housing the wrong way round, which because of the resulting 
wrong positioning of the breather slot, creates a vacuum in the clutch 
housing when the engine is running which sucks oil out of the crankcase at 
rear bearing at a fair old rate in some cases well up for a drip every 10 
secs.  Check this as it might save pulling the engine for the sake of 
turning the plate around !!!

And a fourth possibility I have seen is a tappet cover gasket without the 
breather holes to let crank air get to the the breather pipe, which allows 
crank pressure to build up forcing oil out whereve it can escape!

>From years of doing it, its much easier to pull the engine and gearbox 
together, and much easier to replace too.

Clive
Oxford, UK
===============================
----- Original Message ----- 
From: "Wbeech" <wbeech at flash.net>
To: "'mg-t'" <mg-t at autox.team.net>; <mgs at autox.team.net>
Sent: Wednesday, August 08, 2012 10:05 PM
Subject: [Mg-t] TD Oil Seal


> Friend just brought over his '52 TD and showed me the oil leaking from the
> weep hole in the bell housing.  Probably a drop every 10 seconds as it sat
> there idling.
>
> Couldn't think of anything good to say to him but it must be the rear main
> seal.  It there anything else up there that could be leaking so badly?
>
> I just looked in the Moss catalog at the seal replacement kit that they
> sell.  Does anyone here have any experience with it?  Are there any other
> good alternatives out there?
>
> Lastly, May I presume that this cannot be done with the engine in situ?  I
> have never pulled a TD engine, any particular tricks?  Must I pull the
> engine/tranny together?
>
> Thanks to all,
> Bill
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