ENGINE AR 4304326 - Caterpillar

Table 12
Specifications and Identification of the Components of the Pressure Control Valve    
Location of the Load Piston Body (1)     A     B     C     E     F     G     H    
Thickness of the Load Piston Orifice    
4.58 mm (0.180 inch)    
2.54 mm (0.100 inch)    
4.58 mm (0.180 inch)    
4.58 mm (0.180 inch)    
2.54 inch (0.100 inch)    
4.58 mm (0.180 inch)    
4.58 mm (0.180 inch)    
Color of the Outer Spring of the Load Piston     Yellow color     Light blue color     Light green color     Light green color     Yellow color     Yellow color     Yellow color    
Color of the Inner Spring of the Load Piston     Light green color     Light green color     Light blue color     Orange color     Orange color     Light blue color     Light blue color    
Size of the Decay Orifice    
1.57 mm (0.062 inch)    
1.98 mm (0.078 inch)    
1.57 mm (0.062 inch)    
1.98 mm (0.078 inch)    
1.98 mm (0.078 inch)    
1.57 mm (0.062 inch)        
Color of the Decay Orifice     Green color     Red color     Green color     Red color     Red color     Green color        
( 1 ) The location of the load piston body is identical to the location of the station for the valve. Station "D" is not used.Selector and Pressure Control Valve
Relief Valve
Relief valve setting ... 2790 35 kPa (405 5 psi)Maximum pressure at high idle ... 3220 110 kPa (467 16 psi)
Table 13
Spacers for the Relief Valve    
Part Number     Thickness of the Spacer     Change in Pressure as a Result of One Spacer    
145-0105 Spacer    
0.25 mm (0.010 inch)    
41 kPa (6.0 psi)    
145-0106 Spacer    
0.90 mm (0.035 inch)    
145 kPa (21.0 psi)    
145-0107 Spacer    
1.60 mm (0.063 inch)    
261 kPa (37.9 psi)    Priority Reduction Valve
Setting of the pilot pressure for the priority reduction valve ... 1755 35 kPa (255 5 psi)
Table 14
Spacers for the Priority Reduction Valve    
Part Number     Thickness of the Spacer     Change in Pressure as a Result of the Spacers    
5M-3492 Spacer    
0.25 mm (0.010 inch)    
17 kPa (2.5 psi)    
7M-1397 Spacer    
0.91 mm (0.036 inch)    
60 kPa (8.7 psi)