725 and 730 Articulated Trucks Steering, Suspension, and Body Hoist Hydraulic Systems Caterpillar


General Information Table

Usage:

725 AFX

Table 1
    725     730    
Hoist pressure (raise)
Refer to Systems Operation, Testing and Adjusting, "Piston Pump (Steering,Hoist) - Test and Adjust" and Systems Operation, Testing and Adjusting, "Piston Pump (Brake,Hoist, Fan) - Test and Adjust".    

20700 ± 700 kPa (3000 ± 100 psi)    

20700 ± 700 kPa (3000 ± 100 psi)    
Relief pressure (lower)
Refer to Systems Operation, Testing and Adjusting, "Relief Valve (Hoist Lower) - Test and Adjust".    

7584 ± 690 kPa (1100 ± 100 psi) at low idle    

7584 ± 690 kPa (1100 ± 100 psi) at low idle    
Margin Pressure (Steering and Hoist)
Refer to Systems Operation, Testing and Adjusting, "Piston Pump (Steering,Hoist) - Test and Adjust".    

2200 ± 345 kPa (320 ± 50 psi)    

2200 ± 345 kPa (320 ± 50 psi)    
Margin Pressure (Brake, Hoist and Fan)
Systems Operation, Testing and Adjusting, "Piston Pump (Brake,Hoist, Fan) - Test and Adjust".    

2200 ± 345 kPa (320 ± 50 psi)    

2200 ± 345 kPa (320 ± 50 psi)    
Hoist pilot pressure
Refer to Systems Operation, Testing and Adjusting, "Pressure Reducing Valve (Hoist Pilot Pressure) - Test and Adjust".    

3400 ± 700 kPa (500 ± 100 psi)    

3400 ± 700 kPa (500 ± 100 psi)    
Hoist RAISE time
Refer to Systems Operation, Testing and Adjusting, "Operational Checks".    
10 seconds     12 seconds    
Hoist LOWER time
Refer to Systems Operation, Testing and Adjusting, "Operational Checks".    
8 seconds     10 seconds    
Steering system pressure (maximum pressure)
Refer to Systems Operation, Testing and Adjusting, "Piston Pump (Steering Hoist) - Test and Adjust".    

20684 ± 690 kPa (3000 ± 100 psi)    

20684 ± 690 kPa (3000 ± 100 psi)    
Steering system pressure (standby pressure)
Refer to Systems Operation, Testing and Adjusting, "Piston Pump (Steering Hoist) - Test and Adjust".    

3400 ± 700 kPa (500 ± 100 psi)    

3400 ± 700 kPa (500 ± 100 psi)    
Steering time (stop to stop)
Refer to Systems Operation, Testing and Adjusting, "Operational Checks".    
4 ±1 seconds     4±1 seconds    
Secondary steering pressure (maximum pressure)
Refer to Systems Operation, Testing and Adjusting, "Electric Drive Pump (Secondary Steering) - Check".    

13790 ± 690 kPa (2000 ± 100 psi)    

13790 ± 690 kPa (2000 ± 100 psi)    
Secondary steering pressure (standby pressure)
Refer to Systems Operation, Testing and Adjusting, "Electric Drive Pump (Secondary Steering) - Check".    

2100 ± 700 kPa (300 ± 100 psi)    

2100 ± 700 kPa (300 ± 100 psi)    
Front suspension ride height
Refer to Systems Operation, Testing and Adjusting, "Suspension Cylinder (Front) - Purge and Charge".    
Rim to fender plus
105 ± 10 mm (4.15 ± 0.4 inch)    
Rim to fender plus
105 ± 10 mm (4.15 ± 0.4 inch)    
Minimum fan speed
Refer to Systems Operation, Testing and Adjusting, "Fan Drive System - Test".    
600 ± 100 rpm     600 ± 100 rpm    
Maximum fan speed
Refer to Systems Operation, Testing and Adjusting, "Fan Drive System - Test".    
1700 ± 100 rpm     1700 ± 100 rpm    

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