Airco welding of locomotive fireboxes . ,0 060 07 O 80 09 OlOO OllO OI I I I I I ooooooooooocoooooooooooco o o o ^<===^ o o o o. Fig. 71 Page Thirty-two AIRCO WELDING OFFULL-WELDED HALF DOOR SHEETS THERE ARE TWO methods used to weld in half door sheets offireboxes. That shown in Figure 70 is sometimes resorted toto save time. It is not the best way to do the work, method leaves the old rivetted flange on the side sheets. Thewelding is done by starting at 1, back welding from 2 up to 1, and soon around, ending at B on the mudring. The most serviceable way to do the work is as sh
Airco welding of locomotive fireboxes . ,0 060 07 O 80 09 OlOO OllO OI I I I I I ooooooooooocoooooooooooco o o o ^<===^ o o o o. Fig. 71 Page Thirty-two AIRCO WELDING OFFULL-WELDED HALF DOOR SHEETS THERE ARE TWO methods used to weld in half door sheets offireboxes. That shown in Figure 70 is sometimes resorted toto save time. It is not the best way to do the work, method leaves the old rivetted flange on the side sheets. Thewelding is done by starting at 1, back welding from 2 up to 1, and soon around, ending at B on the mudring. The most serviceable way to do the work is as shown in Figure 71. Operation 1. The side sheet should be cut to the inner edge ofthe rivet holes, fitting the door sheet to the edge of the side sheet. Usean Airco cutting torch with a No. 1 tip, and bevel the joints as shownin sketch at left of Figure 70. Operation 2. Screw in the second row of staybolt holes, andbolt the door sheet to the mudring. Operation 3. Using a No. 8 tip in the Airco welding torch and3/16 or *4 Airco welding rod, start to weld at 1, Figure 71. Thenweld the door sheet to the side sheet by welding from
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