HOSE AS 4490734 - Caterpillar

Table 1
Necessary Parts    
Item     Qty     Part Number     Description    
B     2     288-4327     Boss (Ø 45)    
C     2     288-4328     Boss (Ø 55)    Welding Requirements
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
Welding quality is critical to the success of the installation procedures. Welds must be smooth and continuous. Do not undercut the welds. No overlap is allowed. Grind the ends of the welds to a smooth radius.Prepare the metal for welding according to "Preparing the Metal for Welding". Refer to the illustrations in this Special Instruction for welding symbols and specifications.Use AWS E7018 Electrodes or equivalent electrodes to weld the guards to the work tool.All electrodes must be completely dried. The electrodes can be dried by heating the electrodes to 300 °C (572 °F).Do not weld in windy conditions. Do not weld when temperatures are below 16 °C (60 °F).____________________Penetration characteristics may vary greatly depending on the following conditions:
Electrode diameter
Shielding gas
Welding current
Plate thickness
The following items also affect the welds:
Geometry of the welded joints
Surface conditions
Composition of the base metal and of the electrodeA root pass should be applied before each weld is finished.Maintain a 3 mm (0.12 inch) minimum root opening on all cross welds and circle welds.For more welding information, consult the Caterpillar Service Welding Guide, SEBD0512.Preparing the Metal for Welding
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.
All grease, water, paint, rust, dirt and scale must be removed before welding. Any of these materials will discharge gas which will cause porosity in the weld deposit. Water and rust will cause hydrogen embrittlement. Hydrogen embrittlement causes cracks in the weld deposit.Remove paint, rust, dirt and scale with a wire brush or by buffing or grinding. Shot blasting all work areas will also remove foreign material. Remove any oil or remove any grease with a Caterpillar approved solvent.Modification of the Coupler
The following steps are a general guideline for modifying a "F Family" coupler to a "TB Family"