ENGINE AR-CORE 3395164 - Caterpillar

Table 1
Stick Cylinder Rod End    
Power shift pressure     2900 50 kPa (420 7 psi)    
Engine speed     Speed Dial "10"
AEC switch OFF    
Relief pressure setting    
32500 + 1500 - 1000 kPa (4714 + 218 - 145 psi)    Required Tools
Illustration 1 g01623868
Tooling group "B" 198-4240 Digital Pressure Indicator Gp
Table 2
Tool    Item    Part Number    Description    Qty    
B     198-4240     Digital Pressure Indicator Gp        
    B1     198-4234     Indicator     1    
B2 198-4237     Pressure Sensor
3445 kPa (500 psi)     1    
B3 198-4239     Pressure Sensor
41,368 kPa (6,000 psi)     2    
B4 198-4236     Extension Cable     3    Test Procedure
Position the machine on level ground.
Stop the engine.
Release the pressure in the hydraulic system. For more information, refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 2 g01444648
Pump compartment (1) Pressure tap (delivery pressure for drive pump) (2) Pressure tap (delivery pressure for idler pump) (3) Pressure tap (power shift pressure)
Connect a 41,368 kPa (6,000 psi) pressure gauge to pressure tap (1) .
Connect a 41,368 kPa (6,000 psi) pressure gauge to pressure tap (2) .
Connect a 3445 kPa (500 psi) pressure gauge to pressure tap (3) . This pressure gauge is used to monitor power shift pressure.
Start the engine.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Start Service Mode and input a fixed power shift pressure of 2900 kPa (420 psi).ReferenceRefer to Testing and Adjusting, "Relief Valve (Line) - Test and Adjust".
Move the joystick for the stick to the full STICK OUT position. Hold the joystick for the stick in this position and check the pressure gauge reading at pressure tap (1) or (2) .
Return the joystick for the stick to the NEUTRAL position.Note: The stick lowering control valve is located on the stick cylinder.
Illustration 3 g01444904
Cutaway view of stick lowering control valve (4) Relief valve (5) Locknut (6) Adjustment screw
The pressure gauge reading should be 32500 + 1500 - 1000 kPa (4714 + 218 - 145 psi). If the pressure reading at pressure tap (1) or (2) is not within the specification, adjust line relief valve (4) on the stick lowering control valve.
Move the joystick for the stick to the full STICK OUT position. Hold the joystick for the stick in this position and check the pressure gauge reading at pressure tap (1) or (2) .
In order to adjust line relief valve (4) , loosen locknut (5) and turn adjustment screw (6) until the pressure gauge reading at pressure tap (1) or (2) is 32500 + 1500 - 1000 kPa (4714 + 218 - 145 psi).Note: Turn the adjustment screw clockwise in order to increase the pressure. Turn the adjustment screw counterclockwise in order to decrease the pressure.Note: Always make final pressure adjustment on pressure rise.
Tighten locknut (5) to a torque of 29.5 2 N m (22 1.5 lb ft).