Great Plains NP4000 Applicators - Manual (Page 4)

4 Great Plains Manufacturing, Inc. Front Page Appendix Spring Plunger Update
401-828M Front Page Appendix 2012-08-30
Install Upper Stiffener Bars
If stiffener bars were field-installed, continue at “Paint
Plates and/or Cuts”.
Start with the left wing.
Refer to Figure 5
17. Remove paint from the bottom edges of the inboard
center tube, and from the bottom of the wing ribs
near the center tube.
Refer to Figure 6
18. Select one new:
407-993D FLAT BAR STIFFENER FIELD
Clamp the bar to the inboard center tube, centered
on the tube, and 1 inch (2.5 cm) from the outboard
edge of the mid-wing rib.
19. With a
1 ⁄
4
inch (6 mm) fillet, weld the bar to the tube,
along 100% of the bar edge.
20. Repeat step 7 through step 9 for the right wing.
Paint Plates and/or Cuts
If no welding or cutting was required, continue at “Install
Lock Channel Holders” on page 5.
21. Grind cut and welded surfaces smooth and sand.
22. Apply matching green exterior enamel paint to bare
metal.
Figure 5
Stiffener Bars
34101
59
U
D
F
B
L
R
59
59
Figure 6
Top Stiffener Plate Location
34102
59
1.0 inch
(2.5 cm)