BRACKET AS 2582448 - Caterpillar

Install tie bars (2) in order to control distortion during welding procedures.Note: Alternate welds in order to prevent warping of the hitch or the frame.
Illustration 6 g00991118
Typical view of the 992G (S/N: 7HR1-317)Dimensions are shown in millimeters. (3) 234-2952 Hitch
Create the 30 mm (1.2 inch) bevel groove weld and the 12 mm fillet weld by using one of the welding processes and filler metals that are listed in Table 2. Use a 70 mm bevel groove weld for the 992G (S/N: 7HR318-UP) Wheel Loader and the 992G(S/N: ADZ1-5151) Wheel Loader. See Illustration 6 and Illustration 3 for clarification. As you weld, be sure to observe the following at all times:
Maintain a minimum of 37.8 °C (100 °F) interpass temperature.
The weld passes should be blended smoothly with the other weld beads.
Each weld pass should be free of crater cracks, slag inclusions, undercuts, porosity, and any other visible discontinuities.
Clean the weld after each pass.
Illustration 7 g01002436
Dimensions are shown in millimeters.Do not weld from location (J) to location (K) .Do not weld from location (M) to location (L) .Do not weld from location (K) to location (L) . (4) 234-2983 Plate .
If the result is OK, weld a 12 mm (0.5 inch) fillet on top of the bevel groove weld.
Table 2
Recommended Welding Processes and Filler Metals    
Welding Process    AWS Specification    Electrode    
SMAW (Stick Welding)     A5.1.     E7018 or Equivalent    
GMAW (MIG Welding)     A5.18     ER70S-3 or Equivalent    
FCAW (Gas Shielding)     A5.20     E70T-1 (1), E71T-1 (2)    
( 1 ) This is used for horizontal welding.
( 2 ) This is used for all positions.
Table 3
Bore Dimensions for the Rear Frame
Articulating Hitches    
Bore    Diameter    
E    
184.25 .05 mm (7.254 .002 inch)    
F    
152.48 .05 mm (6.003 .002 inch)    
G    
133.40 .05 mm (5.252 .002 inch)    Note: Use Illustration 5 as a reference for the above table.
After the welds cool, remove tie bars (1) that were installed in Step 12.
Illustration 8 g01002703
Dimensions are shown in millimeters.
Illustration 9 g01002577
Dimensions are shown in millimeters.
Machine the bores from the centerline that was established in Step 2.
Machine the upper face of the boss 442 mm (17.40 inch) above the counterbore. The counterbore is located at 1934 mm (76.14 inch) above the bottom surface of the lower plate.
Check that the counterbore on the top surface of the lower plate is 90 mm (3.54 inch) above the lower surface. If the counterbore is not 90 mm (3.54 inch) above the lower surface, then the upper surface must be built up. The upper surface must then be machined in order to obtain the 2024 mm (79.69 inch) dimension.
Illustration 10 g01002442
Dimensions are shown in millimeters.
Drill 12 14.25 mm (.561 inch) holes to the upper hitch, as shown. Tap these holes by using a M16 x 2-6H tap. The threads should be 29 mm (1.142 inch) deep.
Illustration 11 g01002720
Discard the old 126-3890 Plate Assembly for the steering neutralizer valve. Install a