Maintenance
12-15
3. Insert the new Foam Seal Gasket by working the gasket with your fingers into
the recessed area of the flange. It may help to work the gasket in with the
inside edge first, as shown below. Press in opposite sides of the gasket to
prevent stretching it. Make sure the gasket is seated all the way down into the
flange, and that it lays flat without warping.
4. Turn the chamber upside down, and align the Survey Collar Gasket holes with
the holes in the flange. Place the metal plate over the Survey Collar Gasket
and align the holes.
There is a front and
back side to the Survey
Collar Gasket; if it does
not align with the holes
on the flange, turn the
gasket over and try
again.
5. Insert the screws on opposite sides of the flange, but do not fully tighten until
all screws are started. Partially tighten the screws on opposable sides, and
work your way around the ring so that the metal plate lays flat and does not
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