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Hi Tom,
What you have encountered is not uncommon. The manufacturers seemed to use
an adhesive of some sort to secure the rim and the glass in position and it
dries out and becomes very hard.
I would recommend putting the 2 small screws back in as the mechanism does
not have to come out at this stage.
You have to very gently pry the glass and inner rim, which is under the
glass to get it out.
You need to get a blade under the edge of the inner rim to avoid chipping
the glass.
As I recall there is a slot in the case that you can use as a starting
point.
Take your time and gently work away at it ... it will move eventually.
M
On Wed, Mar 6, 2019 at 9:15 AM Tom <ah3000me@gmail.com> wrote:
> Hi everyone,
>
> I have some white dust inside the BJ8 tach that I'd like to clean up. I
> found disassembly instruction on John Simm's site. After removing the trim
> ring, and undoing the two screws holding the mechanism to the case, the
> glass face is firmly stuck to the case.
>
> If I can pop the glass face off, I can easily clean it with a can of
> compressed air. But the glass face is stuck, and I don't want to break
> something. Anyone have any ideas how to do this?
>
> thanks again,
>
> Tom
>
>
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:small">Hi Tom,</div><div class=3D"gmail_default"=
style=3D"font-family:comic sans ms,sans-serif;font-size:small">What you ha=
ve encountered is not uncommon. The manufacturers seemed to use an adhesive=
of some sort to secure the rim and the glass in position and it dries out =
and becomes very hard.</div><div class=3D"gmail_default" style=3D"font-fami=
ly:comic sans ms,sans-serif;font-size:small">I would recommend putting the =
2 small screws back in as the mechanism does not have to come out at this s=
tage.<br></div><div class=3D"gmail_default" style=3D"font-family:comic sans=
ms,sans-serif;font-size:small">You have to very gently pry the glass and i=
nner rim, which is under the glass to get it out. <br></div><div class=3D"g=
mail_default" style=3D"font-family:comic sans ms,sans-serif;font-size:small=
">You need to get a blade under the edge of the inner rim to avoid chipping=
the glass.</div><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:small">As I recall there is a slot in the case t=
hat you can use as a starting point. <br></div><div class=3D"gmail_default"=
style=3D"font-family:comic sans ms,sans-serif;font-size:small">Take your t=
ime and gently work away at it ... it will move eventually.</div><div class=
=3D"gmail_default" style=3D"font-family:comic sans ms,sans-serif;font-size:=
small"><br></div><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:small">M<br></div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Mar 6, 2019 at 9:15 AM=
Tom <<a href=3D"mailto:ah3000me@gmail.com";>ah3000me@gmail.com</a>> w=
rote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=
=3D"ltr">Hi everyone,<div><br></div><div>I have some white dust inside the =
BJ8 tach that I'd like to clean up.=C2=A0 =C2=A0 I found disassembly in=
struction on John Simm's site.=C2=A0 After removing the trim ring, and =
undoing the two screws holding the mechanism to the case, the glass face is=
firmly stuck to the case.=C2=A0 =C2=A0</div><div><br></div><div>If I can p=
op the glass face off, I can easily clean it with a can of compressed air.=
=C2=A0 But the glass face is stuck, and I don't want to break something=
.=C2=A0 =C2=A0Anyone have any ideas how to do this?</div><div><br></div><di=
v>thanks again,</div><div><br></div><div>Tom</div><div><br></div><div><br><=
/div><div><br></div></div>
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