[Spits] fixing gearbox leaks

[Doug Braun]

My 3-rail gearbox has been leaking for years, and I
have not been able to completely eliminate the
problem.  It leaves a little puddle of gear oil on my
garage floor.

The engine, on the other had, hardly leaks at all.

I did do one non-obvious fix that reduced the leaking:
 I replaced the O-ring seals where the three shifter
rails pass through holes in the front of the gearbox
cover.

Doug Braun
'72 Spit



--- Jim Muller <jimmuller at rcn.com> wrote:

> My Spitfire's supposedly rebuilt gearbox drips oil
> onto the exhaust 
> pipe.  It's embarrasing, really.  Visual inspection
> shows oil all 
> over the outside, a classic case of external
> lubrication.  I'm 
> guessing that, appearances notwithstanding, it isn't
> really leaking 
> through the metal casing nor even through most of
> the seams, but 
> rather from just one or two key places, that the oil
> is being blown 
> around to make it *look* like the casing is porous. 
> And I'm thinking 
> I need to pull it and re-seal it.
> 
> So the question is, what would be the likely places?
>  Front, rear, 
> both, other seams?
> 
> Don't know when I'm going to find the time to do
> this, but it needs 
> to be done.  Either that or build a shield.
> 
> Tanks,
> 
> Jim Muller
> jimmuller at rcn.com
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