On 28 Nov 2008, at 14:08, Mack, David wrote:
> Was the gearbox oil drained down when the drive plate was
> replaced? If
> so, are you sure it was properly filled again afterwards, including
> the
> oil cooler and pipework? If it was just filled to the line on the
> dipstick without running the engine, you probably lost half a litre
> into
> the oil cooler and pipework when the engine was first run.
>
That's a good point. I did an engine service sometime after the drive
plate was replaced, which happened to include a gearbox oil change.
The gearbox was very low indeed then - I wonder if it had been
drained and not refilled, and had been running on what was left in
the bottom until I refilled it. Then my refill would drop by the
amount needed to refill the heat exchanger. (Have just been rung by
Peter Mason at Braidbar who did the drive plate - this isn't the
answer, as he didn't drain the gearbox.)
> Alternatively, is there a leaking drainplug in the bottom of the
> gearbox?
>
Not as far as I can see, and although there's a bit of oil in the
engine bilge, it's not half a litre's worth. I'll check the drain
plug again though. Similarly, there's no sign of oil in the coolant,
Beeky, and no frothy scum under the rocker cover as you'd expect if
the oil was coolant contaminated.
> Otherwise, if you can't see a leak, that would suggest oil is leaking
> from the front of the gearbox into the bell housing, and presumably
> then
> down into the engine bilge. Perhaps the oil seal around the gearbox
> input shaft got damaged during the process of splitting/rejoining the
I wondered about that, but then wouldn't I see a rise in the level on
the main dipstick? It's just as it was after my service.
thanks again - this list is great for questions like this.
All the best
Bruce
There are no strangers on the cut, only boaters we've yet to meet.
[Non-text portions of this message have been removed]
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