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GENERAL WELDING MAINTENANCE. -724650087
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TM-9-3990-206-14-P Palletized Load System (PLS) FlatrackM1074/M1075 Manual
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Flatrack Welding -724650089
TM 9-3990-206-14&P
5-6. GENERAL WELDING MAINTENANCE (CONT).
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(4)
Crossmembers (4). These welds are located at the junction of the crossmember and the main rails. A
crack should be repaired before it has reached two in. (5 cm) at one location. The total length of all
cracks on a single crossmember should not exceed two in. (5 cm). When cracks are present on several
crossmembers, action should be taken to repair it at the next service. If a crossmember is completely
missing, repairs should be made prior to use.
(5)
Decking (5). The decking is secured to the structure in a number of ways. It is welded at the perimeter
of the main rails and front and rear crossmembers. It is also attached from underneath by skip welds
between the crossmember and the deck. The maximum allowable single crack in the deck seams is 6 in.
(15 cm) long. When multiple cracks are present, the combined length of the cracks cannot exceed 10 in.
(25 cm).
(6)
Main Rails (6). The main rails provide a major portion of the load carrying capacity of the flatrack.
They support a portion of the load while loaded on the truck and trailer. Cracks between the main rail
and the pinning boss and the main rail and the fork pocket should be repaired before reaching one in. (2
cm). Cracks at other locations on the main rails should be repaired before reaching 1/2 in. (1 cm).
(7)
Stowage Boxes (7). Cracks in the sheet metal welds of the stowage box should be repaired before
reaching two in. (5 cm).
5-4

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