COLLAR-GUIDE 1U9168 - Caterpillar

Test Procedure (Port B)
Start the engine.
Set the engine speed dial at "1".
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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 aggressive mode (monitor display)
Select the hydraulic modulation mode as aggressive. 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.
Program and select a two-way tool with 50 L/min (13 US gpm) flow and 35,000 kPa (5,076 psi) maximum pressure for both directions.
Override the "Auxiliary Valve #1 Load Sense Solenoid" using the step sequence below.
Start the Electronic Technician.
Select the Machine ECM and then select “OK”.
Select “Diagnostics” from the main menu.
Select “Diagnostic Tests”.
Select “Override Parameters”.
Select “Auxiliary Valve #1 Load Sense Solenoid” and set the current to 0.0 amp.
Lower the left console.
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Joystick (thumb slider)
Slowly move the thumb slider on the left joystick to the right position and read the pressure on the pressure gauge that is connected to Port B on the right ball valve. Refer to Table 1 for the correct pressure.
If the line relief valve pressure is not set to the proper specification, refer to the "Adjustment Procedures".Adjustment Procedures
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 sure that the area around the machine is clear of personnel and obstructions before operating the machine.
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(7) Relief valve (port B)
(8) Plug
(9) Adjustment screw
(10) locknut
(11) Multi combined valve
(12) Relief valve (port A)Adjustment Procedure (Port A)
Stop the engine.
Release the pressure in the hydraulic system.Note: Refer to Testing and Adjusting, "System Pressure - Release".
Raise the left console.
Remove the cap from line relief valve (12).
To avoid damage to the hydraulic components, do not turn the main relief valve adjustment screw into the stop.
Turn the adjustment screw on the line relief valve clockwise in order to increase