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Don,
I had a leak in the large OD drain plug plug as well. After several failed
attempts with magic sealers to stop the leak I discovered the flange on the
brass nut had a slight wave. I carefully filed the flange until flat and
dressed the OD opening as well. I applied Permatex Aviation Form-a-Gasket
to the fiber washer and the bottom half of the threads. So far no leaks. I
am using 30W non-detergent oil, synthetic gear oils will leak more
readily than the 30W.
Lesson learned is there can't be the slightest gap between the flange and
the seat. Try assembling dry without the gasket and see if the nut seats
all the way around.
Harold
On Sat, Sep 28, 2024 at 8:07=E2=80=AFAM Bob Spidell via Healeys <
healeys@autox.team.net> wrote:
> I'm having the same problem Don (well, I've always had it, but it's gotte=
n
> worse). Years ago, when I had the gearbox/OD out I'd carefully flat-filed
> the O/D, as there was some roughness to it, and it seemed to help. But,
> after the latest intervention the dripping increased. I tried a new gaske=
t
> and a sealer that's worked well for me in other places--Permatex
> Seal&Lock--and still get some drips. I can't say for sure, since I don't
> have one of the old gaskets, but I think the newer ones offered are thinn=
er
> around the perimeter (not thickness, the width of the 'rim' of the gasket=
;
> i.e. OD minus ID). That could be part of the problem, plus those fiber
> washers, used elsewhere, are always tricky to get a good seal (S.U. went
> from the fiber gaskets to O-rings on their fuel pumps--you don't suppose?=
).
> Soaking with a light oil before installing helps; I don't recall if I did
> that last attempt.
>
> I have a 'correct tool' as well, but it's still hard to get a lot of
> torque on the brass nut in situ. Back in the day, I'd take a drift and a
> 2-lb hammer to it, but since getting a new plug I'm loathe to do that (bu=
t
> in desperation I might try it). Another alternative would be to forgo the
> gasket and just use the sealant, which worked well to seal a mis-sized pl=
ug
> on an 'uprated' water pump (thanks Steve K.). But, it could be that that
> sealant may not work as well on an oily surface (hard to get all oil off
> the hole as it keeps dripping for days).
>
> Bob
>
> On 9/28/2024 6:45 AM, Don via Healeys wrote:
>
> Good morning all
> Two days ago I installed a new washer on the large brass drain plug o=
n the 67 BJ8 . Filled the transmission up . Looked at it in the morning and=
it had drips on the bottom of the plug . So I used the correct tool and tr=
ied to tighten it up . Then this morning looked again and there was those d=
rips. When I installed it the surface didn=E2=80=99t look gouged or anythin=
g. So what=E2=80=99s the fix to stop the drips ? Remove the big brass plug=
, get a new gasket for it , apply some kind of gasket sealer on the gasket=
, reinstall it and tighten as needed? Maybe add two gaskets ?
> Thanks as always, Don
> Sent from my iPhone
>
>
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<div dir=3D"ltr">Don,<div><br></div><div>I had a leak in the large OD drain=
plug plug as well. After several failed attempts with magic sealers to sto=
p the leak I discovered the flange on the brass nut had a slight wave. I ca=
refully filed the flange until flat and dressed the OD opening=C2=A0as well=
. I applied Permatex Aviation Form-a-Gasket to the fiber washer and the bot=
tom half of the threads. So far no leaks. I am using 30W non-detergent oil,=
synthetic gear oils will leak more readily=C2=A0than the 30W.</div><div><b=
r></div><div>Lesson learned is there can't be the slightest gap between=
the flange and the seat. Try assembling=C2=A0dry without the gasket and se=
e if the nut seats all the way around.</div><div><br></div><div>Harold</div=
><div><br></div><div><br></div><div><br></div><div><br></div></div><br><div=
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, Sep 28=
, 2024 at 8:07=E2=80=AFAM Bob Spidell via Healeys <<a href=3D"mailto:hea=
leys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1p=
x solid rgb(204,204,204);padding-left:1ex"><u></u>
=20
=20
=20
<div>
I'm having the same problem Don (well, I've always had it, but =
it's
gotten worse). Years ago, when I had the gearbox/OD out I'd
carefully flat-filed the O/D, as there was some roughness to it, and
it seemed to help. But, after the latest intervention the dripping
increased. I tried a new gasket and a sealer that's worked well for
me in other places--Permatex Seal&Lock--and still get some
drips. I can't say for sure, since I don't have one of the old
gaskets, but I think the newer ones offered are thinner around the
perimeter (not thickness, the width of the 'rim' of the gasket;=
i.e.
OD minus ID). That could be part of the problem, plus those fiber
washers, used elsewhere, are always tricky to get a good seal (S.U.
went from the fiber gaskets to O-rings on their fuel pumps--you
don't suppose?). Soaking with a light oil before installing helps; =
I
don't recall if I did that last attempt. <br>
<br>
I have a 'correct tool' as well, but it's still hard to get=
a lot of
torque on the brass nut in situ. Back in the day, I'd take a drift
and a 2-lb hammer to it, but since getting a new plug I'm loathe to
do that (but in desperation I might try it). Another alternative
would be to forgo the gasket and just use the sealant, which worked
well to seal a mis-sized plug on an 'uprated' water pump (thank=
s
Steve K.). But, it could be that that sealant may not work as well
on an oily surface (hard to get all oil off the hole as it keeps
dripping for days). <br>
<br>
Bob<br>
<br>
<div>On 9/28/2024 6:45 AM, Don via Healeys
wrote:<br>
</div>
<blockquote type=3D"cite">
<pre>Good morning all=20
Two days ago I installed a new washer on the large brass drain plug on =
the 67 BJ8 . Filled the transmission up . Looked at it in the morning and i=
t had drips on the bottom of the plug . So I used the correct tool and trie=
d to tighten it up . Then this morning looked again and there was those dri=
ps. When I installed it the surface didn=E2=80=99t look gouged or anything.=
So what=E2=80=99s the fix to stop the drips ? Remove the big brass plug ,=
get a new gasket for it , apply some kind of gasket sealer on the gasket, =
reinstall it and tighten as needed? Maybe add two gaskets ?=20
Thanks as always, Don=20
Sent from my iPhone
</pre>
</blockquote>
</div>
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</blockquote></div>
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