BODY-VALVE 8J0506 - Caterpillar

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Engine speed dial
Set the engine speed dial at "10".
Lower the left console.
Position the machine on level ground. Check the visibility and adjust the mirrors for the best vision close to the machine.
Fully depress the service brake pedal until the service brake pedal locks mechanically.
Increase the hydraulic oil temperature to 46° to 60° C (115° to 140° F).
Lower the stabilizers and the blade tip.
Fully extend the bucket cylinder and place the bucket on the ground.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.
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The load sense pressure tap is located behind the left rear access door
Connect tooling (B2) 41,368 kPa (6,000 psi) pressure sensor to the load sensing signal pressure tap.
Clear all personnel from the machine and from the area around the machine.Test Procedure
Start the engine.
Set the engine speed dial at "10".
Lower the left console.
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Power mode control button on the soft panel switch
Push down on the power mode control button to activate power mode.Note: The indicator light will be illuminated when power mode is activated.
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Automatic Engine Speed Control (AESC) as displayed on the programmable function key in the monitor.
Disable the automatic engine speed control through the monitor by pressing the programmable button.
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Hydraulic modulation switch on left joystick
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Hydraulic modulation medium mode (monitor display)
Select the hydraulic modulation mode as medium. Press the lower front switch on the left joystick to select the hydraulic modulation mode.
The air conditioning should be turned off for the following test.
Slowly move an implement (boom, bucket, stick) to the full CLOSE position or the full OPEN position and hold.
Check the pressure at the load sensing signal pressure at pressure tap.Note: Refer to Table 1 in this manual for the correct pressure.
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Joystick (right button)
Enable heavy lift mode, if equipped. Press the top right button on the right joystick to activate heavy lift mode.Note: The indicator for heavy lift mode will illuminate on the monitor when heavy lift mode is active.Note: The heavy lift mode is only active for 60 seconds after the top right button on the right joystick is pressed.
Slowly move an implement (boom, bucket, stick) to the full CLOSE position or the full OPEN position and hold.
Check the pressure at the load sensing signal pressure at pressure tap.Note: Refer to Table 1 in this manual for the correct pressure.
Fully extend the bucket cylinder and place the bucket on the ground.
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.
If the load sensing signal pressure is not correct, refer to the "Adjustment Procedure".Adjustment Procedure
To adjust the load sensing signal pressure, slowly move the bucket control lever to the full BUCKET CLOSE position and hold.
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Main control valve (typical example)
(1) Adjustment screw
(2) Locknut
(3) Adjustment screw
(4) Locknut
(5) Load sensing signal limiter valve
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make