Figure 9
Main bolts
(Click to view full size) |
Hot Section Final Assembly
We are now ready to final assemble the hot
section.
Remove the four main bolts from the main
bearing case. Place the four bolts through the rotor case back
plate. Place a washer on each bolt, followed by a nut (finger tight
against the back plate).
Follow with another set of 4 nuts turned to
within about an inch of the first set of 4 nuts, followed by another
set of four washers. (Figure 9) |
Figure 10a
Tightening bolts
(Click to view full size)
Figure 10b
Setting clearance
(Click to view full size)
|
With all bolts just slightly loose, guide the
bolts back through the stand plates and main case. Tighten the first
four bolts against the rotor case plate (about 25 pounds
torque).
Next, adjust the second set of bolts until the
inside face of the rotor case plate is about 0.0625-inch closer to
the bearing case than the rotor flange. -- This sets the
clearance between the rotor assembly and the case plates.
(Figures 10a & 10b) |
Figure 11
Last set of washers/nuts
(Click to view full size)
|
After all four bolts
are adjusted equally (with the 0.0625-inch clearance), torque down
the last set of washers and nuts on the far side of the bearing
case. (Figure 11)
Note: The rotor clearance can be readjusted
at any time by loosening the main bolts and turning the clearance
nuts the required amount.
|
Figure 12
Rotor assembly to flange
(Click to view full size)
|
Next place the rotor
assembly on the flange, followed by the flange plate. Torque the
entire assembly to the flange using the (6) 5/16-inch bolts and nuts
(45 pounds). Use lock washers and locktite to secure. (Figure 12) |
Figure 13
Case ring, back/front
(Click to view full size)
|
Place the case ring in
the grooved slot of the back case plate, followed by the case front
plate and 11 (0.25-inch) clamping bolts.
Torque to 30 pounds. (Figure 13)
|
Figure 14
Assembling the nozzle
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|
Finally, insert the nozzle into the case
inlet; bolt the main inlet to the case inlet using four short bolts.
(Figure 14)
The main assembly is now complete. |
