CLAMP 3116693 - Caterpillar

Weld Quality
Note: The quality of a welding repair is dependent on the skill of the welding operator and the materials used for the repair. All welds must conform to the standards shown in AWS specifications for qualified welds (AWS D1.1-83).
Only low hydrogen welding is permitted. All welds must be smooth, free of gas holes or cracks and have no undercuts and overlaps.
Use one of the recommended welding processes and type of electrodes that follows: (A) Shielded Metal Arc Welding (SMAW). Use a covered electrode that meets the American Welding Society Class E7018. An electrode with a core diameter of 3 mm (0.118 inch) is recommended for the root (first) pass. (B) Gas Metal Arc Welding. Use a bare electrode that meets American Welding Class E70S2, E70S3, E70S6, or E70S1B.
All electrodes must be dry. Follow the manufactures instructions on handling and storage to prevent moisture absorption.Note: The repair surface must be clean. Remove all foreign material before welding. All slag and foreign material must be removed after each pass of multipass welds and tie-ends before making a following pass or weld connections.
More than one weld pass must be used if the groove preparation is more than 5 mm (0.197 inch) deep. Each pass must be cleaned and inspected before the pass is covered with an additional pass. Care must be used with each pass to prevent unfused areas between layers and at the deposit and base metal interface.
A good root (first) pass is important. Care must be used to prevent the containment (trapping) of slag or the formation of voids or root porosity.
Any defect in the root pass or following passes must be corrected before the next weld is made (in the same groove).
Any weld defect must be ground out, cleaned and welded again. Welding to cover a welding defect is not allowed.
The weld toe geometry must be free from undercut, cold laps, and poor transitions after the weld deposit is ground flush with the adjacent surface.
After grinding the weld deposit flush with the plate surface, unfused lengths around the weld deposit perimeter can be detected by using a dye-penetrant.Welding Repair Check List
Is this type of repair allowed?
Clean the repair area metal to remove