BEARING-FLANGE 7D7646 - Caterpillar

In order to verify the quality of the weld, refer to Figure 27 from Caterpillar Specification 1E99 which is shown above.General Weld Repair
Remove any components that prevent access to the cracked weld.
Refer to ""Area Preparation"" Section in this Special Instruction.
Use dye penetrant (PT) or magnetic particle (MT) in order to identify the extent and/or length of the necessary repair.
Protect machined surfaces from sparks and weld debris.
Ensure that the base material is at a minimum temperature of 15.6° C (60° F) before welding. Ensure that a minimum temperature of 15.6° C (60° F) is maintained throughout the entire welding procedure.
Cracks in the weld and sound metal which are 50.8 mm (2.0 inch) beyond each end of the crack shall be removed by air carbon arc torch or grinder. Caution should be used to avoid excessive removal of the surrounding base material. Areas that are gouged by air carbon arc torch shall be later ground and cleaned prior to welding in order to remove all carbon absorption or contamination. Gouged areas requiring rewelding shall have a root radius of not less than 5 mm (0.20 inch) and a Single V - 60 degree included angle joint preparation to allow the welder reasonable access to reinstate the weld.
Use PT or MT to inspect the gouged and ground area in order to ensure that the crack has been removed before welding commences.
Repair the prepared groove utilizing the recommendations provided in the ""Welding Electrodes and Parameters"" Section in this Special Instruction.
Clean the weld area. Inspect the area that was welded. All weld quality shall conform to the criteria specified in the ""Weld Inspection and Acceptance Criteria"" section in this Special Instruction.