HARNESS AS-CHASSIS 4727726 - Caterpillar

Do not attempt to assemble this machine until you read and you understand the assembly instructions.Improper assembly procedures could result in injury or death.
Personal injury can result from flame cutting or welding on painted areas.The effect of gasses from burned paint is a hazard to the person doing the cutting or welding.Do not flame cut or weld on painted areas.
Personal injury or death can result from fumes, gases and ultraviolet rays from the weld arc.Welding can cause fumes, burn skin and produce ultraviolet rays.Keep your head out of the fumes. Use ventilation, exhaust at the arc, or both, to keep fumes and gases from your breathing area. Wear eye, ear and body protection before working.Protect yourself and others; read and understand this warning. Fumes and gases can be dangerous to your health. Ultraviolet rays from the weld arc can injure eyes and burn skin. Electric shock can cause death.Read and understand the manufacturer's instructions and your employer's safety practices. Do not touch live electrical parts.See "American National Standard Z49.1, Safety in Welding and Cutting" published by the American Welding Society.American Welding Society
2501 N.W. 7th Street
Miami, Florida 33125
See "OSHA Safety and Health Standards, 29 CFR 1910", available from U.S. Department of Labor.U.S. Department of Labor
Washington, D.C. 20210
Required Tool List
Table 1
Required Tools    
Qty    Part Number    Description    
1     164-3310     Infrared Thermometer    Processes for Welding
Do not weld in areas if there is a strong movement of air or in temperatures of less than 16 deg C (61 deg F).The following welding processes are acceptable for this procedure:
Gas metal arc welding (GMAW) Use 35 5 cubic feet per hour of shielding gas (75% argon and 25% carbon dioxide). The AWS Class ER70S-3 is a welding process that can be used with the following welders: Lincoln L-50 and Hobart HB-25. Comparable equipment may be used.
Shielded metal arc welding (SMAW) Use E7018 electrodes in this DCEP process.References
ReferenceRefer to Special Instruction, SEHS6929, "Inspection, Maintenance and Repair of Rollover Protective Structures (ROPS) and Attachment Installation Guidelines".ReferenceRefer to Service Magazine, SEBD1587, "What ROPS/FOPS Certification Means".ReferenceRefer to Special Instructions, REHS1841, "General Welding Procedures" for additional welding instructions.ReferenceGuide, SEBD0512, "Service Welding Guide".Special Preparation
Acquire a plug drill with a 15.5 mm (0.61 inch) diameter. Also,a magnetic drill stand will be used.Note: Another means of drilling may be used. One must be able to drill through only the top 2.5 mm (0.10 inch) of the cab roof skin without drilling into the plate below it.Note: If the lower plate for the ROPS is hit with the tip of the drill, the cab will be considered no longer certified.Repair Procedure
Welding of the Cab Roof
Remove the cab headliner from the inside of the cab. Protect the inside of the cab during welding of the roof.
Illustration 1 g01783658
Top view of low profile 198-9367 Roof (aa) 398 mm (15.7 inch) (bb) 634 mm (25.0 inch) (cc) 420 mm (16.5 inch) (dd) 500 mm (19.7 inch)
For the rework of the low profile cab roof, see Illustration 1. Drill