Remove the porcelain tube and bracket.
(Steps 8 and 9 are for Dawson tube assemblies.
Skip steps 8 and 9 for Orton tube assemblies,
which have the tube assembly bracket perma-
nently attached.) Remove the nut holding the por-
celain tube assembly to the tube assembly bracket.
You will see a notch on the top of the new tube as-
sembly. Align that notch with the pin on the tube
assembly bracket. Install the washer and nut.
(The washer goes under the nut on the front of the
tube assembly bracket.)
Remove the release claw from the old porcelain
tube and install it on the new tube.
Some porcelain tube assemblies have a fiber
washer and spring ring, which help to prevent heat
from entering the switch box. Transfer the fiber
washer and spring ring, if any, to the new porcelain
tube.
21
Installing the bracket to the new tube assembly (Dawson tubes).
Align the notch on the new Dawson tube assembly with the pin on the
bracket. This assures that the porcelain tube slot will be perfectly ver-
tical inside the kiln.
Tighten the nut on the Dawson tube assembly.