Step 50: This step can be done in one of 3 different ways
depending on which model PID is assembled.
A. For a Low Gain Pilot (Figure 29), place Diaphragm
Assembly #3 on top of the Lower Feedback Chamber (TT).
Bolt Diaphragm Assembly #3 in between the Lower
and Upper Feedback Chambers (TT and YY) with
12, 8-32 x 1 3/4” SHCS (ZZ). Move to Step 51.
B. For a Middle Gain Pilot (Figure 30), follow Step 50A,
except, add the Middle Gain Rings (AAA) on both sides
of Diaphragm Assembly #3. Take special note of the
orientation of the chamfer on each of the Middle
Gain Rings (AAA) shown in Figure 30. Move to Step 51.
C. For a High Gain Pilot (Figure 31), follow Step 50A, except,
add the High Gain Rings (BBB) on both sides of Diaphragm
Assembly #3. Take special note of the orientation of the
chamfer on each of the High Gain Rings (BBB) shown in
Figure 31. Move to Step 51.
39 | GE Oil & Gas
© 2016 General Electric Company. All rights reserved.
ZZ
TT
YY
NN
Note: Slightly
Lubricate the
ends of Screws (ZZ)
Diaphragm
Assembly
Orientation
Figure 29
ZZ
YY
AAA
TT
AAA
Diaphragm
Assembly
#3
Large
Chamfer
Faces
Up
Large
Chamfer
Faces
Down
Figure 30
ZZ
YY
BBB
BBB
TT
Large
Chamfer
Faces
Up
Diaphragm
Assembly
#3
Large
Chamfer
Faces
Down
Figure 31