VALVE MECHANISM GP 2355880 - Caterpillar

Personal injury or death can result from sudden work tool movement.Sudden movement of the work tool can cause injury to persons near the work tool.To prevent injury or death, make sure that the area around the work tool is clear of personnel and obstructions before operating the work tool.
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
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.
Before carrying out arc welding on the machine or on any equipment attached to the machine, disconnect all power and ground leads from the batteries in order to avoid possible damage to electronic components.
Welding Requirements
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 the next section. Refer to the illustrations in this special instruction for welding symbols and specifications.All electrodes must be dried completely. The electrodes can be dried by heating the electrodes to 300°C (572°F). The electrodes must be dried for at least 30 minutes.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 thicknessThe following items also affect the welds:
Geometry of 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.Parts Section
Table 1
456-4111 Quick Coupler Control Ar - 00    
Qty     Part No.     Description     Media    
(1)     343-8342     Hydraulic Lines Kit     REHS3854    
(1)     238-2485     Toggle Switch Gp     GEHS0787    
(1)     238-1565     Quick Coupler Wiring Gp     GEHS0797    
(1)     456-4112     Front Lines Gp     GEHS0798    
(1)     448-4756     Film Gp     -    Installation of the 448-4756 Film Gp
Illustration 2 g02454257
Left side view of the cab (1) 268-4531 Film (2) 268-8872 Film (For U.S) (2) 269-0121 Film (For INTL) Tuning Section
Table 2
Systems Operation, Testing and Adjusting Media Reference Table    
Machine     Media    
312D, to 319D     RENR9739    
320D, to 340D2     RENR7389    Set the machine tool control system.
ReferenceExcavator Tool Control System, -, "Testing and Adjusting Section", "Process for Setting Up the Work Tool"Program the machine ECM to recognize the components that have been installedCalibrate the machine electronic control system.
ReferenceExcavator Tool Control System, -, "Testing and Adjusting Section", "Calibration"Calibrate the different components that have been installed. These components