GUARD AS 5667836 - Caterpillar

Table 1
Relief Valve    Specifications    
New Rebuild    Service Limit    
Main relief valve    
25250 750 kPa (3660 110 psi)    
25250 750 kPa (3660 110 psi)    
Boom cylinder line (head end)    
27900 1500 kPa (4050 220 psi)    
27900 1500 kPa (4050 220 psi)    
Boom cylinder line (rod end)    
Stick cylinder line (head end)    
Stick cylinder line (rod end)    
Bucket cylinder line (head end)    
Swing relief pressure (right)    
23500 1500 kPa (3400 220 psi)    
23500 1500 kPa (3400 220 psi)    
Swing relief pressure (left)    
Pilot relief valve    
3800 200 kPa (550 30 psi)    
3800 200 kPa (550 30 psi)    Note: Normal operations of the engine and pumps are necessary for the pressure adjustments. Slow output flow from the pump is an indication of air in the hydraulic system. Make sure that no air is present in the hydraulic system. Refer to Testing and Adjusting, "Main Hydraulic Pump Air - Purge".