LIGHTING GP-FLOOD 3794965 - Caterpillar

Illustration 11 g00789552
(C) 600 mm (23.6 inch) (D) 180 mm (7.1 inch)
Fabricate four stiffener plates that are placed on top of the repaired area. The plates should be a 1E170 or 1E650 mild steel. The plates should be 12 mm (0.47 inch) thick and the dimensions of the plate should be 600 mm (23.6 inch) by 180 mm (7.1 inch). Refer to Illustration 11.Note: The radius of the plates must be trimmed in order to fit the curved portion of the hinge casting.
Fit the stiffener plates to the hinge casting. Make sure that the plates fit flat on top of the hinge casting. If the plates do not fit flat, trim the plate in order to ensure a flat fit.
Illustration 12 g00789562
(E) 50 mm (1.97 inch)
Illustration 13 g00789570
Position one plate (1) 50 mm (1.97 inch) from the edge of the top casting. Tack weld plate (1) in place. Complete weld (W3) between plate (1) and the casting. Refer to Illustrations 12 and 13 and refer to Table 4.
Table 4
Weld Tolerances    
Weld     Description    
W3    
12 mm (0.47 inch) Fillet Weld    
Illustration 14 g00789948
(F) 50 mm (1.97 inch)
Illustration 15 g00789949
Position one plate (2) 50 mm (1.97 inch) from the edge of the top casting. Tack weld plate (2) in place. Complete weld (W4) between plate (2) and the casting. Refer to Illustration 14 and 15 and refer to Table 5.
Table 5
Weld Tolerances    
Weld     Description    
W4    
12 mm (0.47 inch) Fillet Weld    
Rotate the bucket assembly by 180 degrees.
Illustration 16 g00789971
(G) 50 mm (1.97 inch)
Illustration 17 g00789564
Position one plate (3) 50 mm (1.97 inch) from the edge of the top casting. Tack weld plate (3) in place. Complete weld (W5) between plate (3) and the casting. Refer to Illustration 16 and 17 and refer to Table 6.
Table 6
Weld Tolerances    
Weld     Description    
W5    
12 mm (0.47 inch) Fillet Weld    
Illustration 18 g00789974
(H) 50 mm (1.97 inch)
Illustration 19 g00789973
Position one plate (4) 50 mm (1.97 inch) from the edge of the top casting. Tack weld plate (4) in place. Complete weld (W6) between plate (4) and the casting. Refer to Illustration 18 and 19 and refer to Table 7.
Table 7
Weld Tolerances    
Weld     Description    
W6    
12 mm (0.47 inch) Fillet Weld    
Remove the stiffener bars from the hinge castings. Grind the areas of the casting that were affected by the welding of the stiffener bars. Blend the areas that were welded with the surrounding casting.
Measure the same areas that were measured in Step 3. Compare the two measurements. If the measurements are drastically different, welding and remachining of the bores may be required. This can only be determined once the repair process has been completed.
Examine the bulldozer. If the bulldozer is usable, the bulldozer may be returned to service.