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Let me check that, Keith. Yes, lockwashers would make sense. I'm sure I
put back everything I took off when I replaced the diaphragm, but who knows
what happened before me. Thx --
On Mon, Oct 6, 2025 at 1:18=E2=80=AFPM <keithstewart@bell.net> wrote:
> Seems to me those machine screws had lock washers under the head and mayb=
e
> hard to tell, but your picture seems to not show a washer.
>
>
>
> Keith
>
>
>
> Keith Stewart
>
> keithstewart@bell.net
>
> World of Triumph https://keith-stewart.ca/
>
>
>
>
>
>
>
>
>
> *From:* Don Hiscock <don.hiscock@gmail.com>
> *Sent:* October 6, 2025 1:20 PM
> *To:* Triumphs list <triumphs@autox.team.net>
> *Subject:* [TR] Which threadlocker color for wet-liner four AC fuel pump
> diaphragm cover screws?
>
>
>
> For some unknown reason, after ten years or more in the TR3B the machine
> screws that hold down the top of the diaphragm cover on the original AC
> fuel pump have started working loose as the car is driven. Gasoline then
> seeps slowly from the edge of the diaphragm due to the pressure head in t=
he
> tank. Very odd. The first time I was willing to chalk up to a one-off.
> But now it's a trend.
>
>
>
> There's only so tight one wants go go on those screws without distorting
> the diecasting, and I'm probably a little past where I feel comfortable n=
ow.
>
> Seems like a case for a threadlocking compound. I'm guessing purple
> Locktite might do the trick -- it shouldn't take much. Has anyone been
> down this road ahead of me?
>
>
>
>
> https://photos.smugmug.com/photos/i-QWD7M6q/0/KGTMZ64Lk6ZV6VHFPGR8PKkQNJv=
mJHxd74ZVFkQLS/X5/i-QWD7M6q-X5.jpg
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Let=
me check that, Keith.=C2=A0 Yes, lockwashers would make sense.=C2=A0 I'=
;m sure I put back everything I took off when I replaced the diaphragm, but=
who knows what happened before me.=C2=A0 Thx --</div></div><br><div class=
=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr=
">On Mon, Oct 6, 2025 at 1:18=E2=80=AFPM <<a href=3D"mailto:keithstewart=
@bell.net">keithstewart@bell.net</a>> wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex"><div class=3D"msg7430065911570231231"><div=
lang=3D"EN-CA" style=3D"overflow-wrap: break-word;"><div class=3D"m_743006=
5911570231231WordSection1"><p class=3D"m_7430065911570231231MsoPlainText">S=
eems to me those machine screws had lock washers under the head and maybe h=
ard to tell, but your picture seems to not show a washer.<u></u><u></u></p>=
<p class=3D"m_7430065911570231231MsoPlainText"><u></u>=C2=A0<u></u></p><p c=
lass=3D"m_7430065911570231231MsoPlainText">Keith<u></u><u></u></p><p class=
=3D"m_7430065911570231231MsoPlainText"><u></u>=C2=A0<u></u></p><p class=3D"=
m_7430065911570231231MsoPlainText">Keith Stewart<u></u><u></u></p><p class=
=3D"m_7430065911570231231MsoPlainText"><a href=3D"mailto:keithstewart@bell.=
net" target=3D"_blank">keithstewart@bell.net</a><u></u><u></u></p><p class=
=3D"m_7430065911570231231MsoPlainText">World of Triumph <a href=3D"https://=
keith-stewart.ca/" target=3D"_blank">https://keith-stewart.ca/</a> <u></u><=
u></u></p><p class=3D"m_7430065911570231231MsoPlainText">=C2=A0<u></u><u></=
u></p><p class=3D"m_7430065911570231231MsoPlainText"><u></u>=C2=A0<u></u></=
p><p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p><p class=3D"M=
soNormal"><span><u></u>=C2=A0<u></u></span></p><div style=3D"border-right:n=
one;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,22=
5);padding:3pt 0cm 0cm"><p class=3D"MsoNormal"><b><span lang=3D"EN-US" styl=
e=3D"font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span l=
ang=3D"EN-US" style=3D"font-size:11pt;font-family:Calibri,sans-serif"> Don =
Hiscock <<a href=3D"mailto:don.hiscock@gmail.com"; target=3D"_blank">don.=
hiscock@gmail.com</a>> <br><b>Sent:</b> October 6, 2025 1:20 PM<br><b>To=
:</b> Triumphs list <<a href=3D"mailto:triumphs@autox.team.net"; target=
=3D"_blank">triumphs@autox.team.net</a>><br><b>Subject:</b> [TR] Which t=
hreadlocker color for wet-liner four AC fuel pump diaphragm cover screws?<u=
></u><u></u></span></p></div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p=
><div><div><p class=3D"MsoNormal">For some unknown reason, after ten years =
or more in the TR3B the machine screws that hold down the top of the diaphr=
agm cover on the original AC fuel pump have started working loose as the ca=
r is driven.=C2=A0 Gasoline then seeps slowly from the edge of the diaphrag=
m due to the pressure head in the tank.=C2=A0 Very odd.=C2=A0 The first tim=
e I was willing to chalk up to a one-off.=C2=A0 But now it's a trend.=
=C2=A0<u></u><u></u></p></div><div><p class=3D"MsoNormal"><u></u>=C2=A0<u><=
/u></p></div><div><p class=3D"MsoNormal">There's only so tight one want=
s go go on those screws without distorting the diecasting, and I'm prob=
ably a little past where I feel comfortable now.<br><br>Seems like a case f=
or a threadlocking compound.=C2=A0 I'm guessing purple Locktite might d=
o the trick -- it shouldn't take much.=C2=A0 Has anyone been down this =
road ahead of me?<u></u><u></u></p></div><div><p class=3D"MsoNormal"><u></u=
>=C2=A0<u></u></p></div><div><p class=3D"MsoNormal"><a href=3D"https://phot=
os.smugmug.com/photos/i-QWD7M6q/0/KGTMZ64Lk6ZV6VHFPGR8PKkQNJvmJHxd74ZVFkQLS=
/X5/i-QWD7M6q-X5.jpg" target=3D"_blank">https://photos.smugmug.com/photos/i=
-QWD7M6q/0/KGTMZ64Lk6ZV6VHFPGR8PKkQNJvmJHxd74ZVFkQLS/X5/i-QWD7M6q-X5.jpg</a=
><u></u><u></u></p></div></div></div></div></div></blockquote></div>
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