BOGIE AS 9W7417 - Caterpillar

Illustration 4 g02374477
Main control valve (M316D)
(1) Adjustment screw
(2) Locknut
(3) Adjustment screw
(4) Locknut
(5) Adjustment screw
(6) Locknut
(7) Main relief valve
(8) Load sensing signal limiter valve
Illustration 5 g02374496
Main control valve (M318D, M318D MH, M322D and M322D MH)
(1) Adjustment screw
(2) Locknut
(3) Adjustment screw
(4) Locknut
(5) Adjustment screw
(6) Locknut
(7) Main relief valve
(8) Load sensing signal limiter valve
Loosen locknut (6) on load sensing signal limiter valve (8).
Turn the adjustment screw (5) of load sensing signal limiter valve (8) clockwise by one half turn.
Tighten locknut (6) on load sensing signal limiter valve (8).
Loosen locknut (2) on main relief valve (7).
Turn adjustment screw (1) clockwise on main relief valve (7) by one quarter turn.
Tighten locknut (2) on main relief valve (7). Test and Adjust Procedure
Clear all personnel from the machine and from the area around the machine.
Start the engine.
Illustration 6 g02451617
Engine speed dial
Set the engine speed dial at "5".
Lower the left console.
Illustration 7 g02446738
Power mode control button located on the soft panel switch
Push down on the power mode control button in order to activate power mode. Note: The indicator light will be illuminated when power mode is activated.
Lower the left console.
Illustration 8 g02447036
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.
Illustration 9 g02447064
Joystick (front switch)
Disable the hydraulic modulation control, if equipped. Press the front switch on the right joystick in order to deactivate hydraulic modulation.
The air conditioning should be turned off for the following test.
Operate the hammer.
Check the line relief pressure at the load sensing signal pressure tap. Note: Refer to Testing and Adjusting, "Specifications" in this manual for the correct pressures.
Illustration 10 g02374216
(9) Locknut
(10) Adjustment screw
(11) Line relief 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 sure that the area around the machine is clear of personnel and obstructions before operating the machine.
If the line relief valve pressure is not set to the proper specification, adjust the pressure at the appropriate relief valve.
Loosen locknut (9) on line relief valve (11).
To avoid damage to the hydraulic components, do not turn the main relief valve adjustment screw into the stop.
Turn adjustment screw (10) on line relief valve (11) until the pressure at the load sensing signal pressure tap is set to the proper specification. Note: Refer to Table 2 in this manual for the correct pressure.Note: Turn adjustment screw (10) clockwise by a quarter turn in order to increase the pressure by approximately 4000 kPa (580 psi).Note: Make the final pressure adjustments on the pressure rise.
Tighten locknut (9) on line relief valve (11) to the specified torque.
Adjust main relief valve (7) to the original setting. Note: Refer to Testing and Adjusting, "Relief Valve (Main) - Test and Adjust".
Adjust load sensing signal limiter valve (8) to the original setting. Note: Refer to Testing and Adjusting, "Relief Valve (Signal Limiter) - Test and Adjust".Worksheet
Table 2
"Relief Valve (Line, Hammer) - Test and Adjust"
Date: Machine Serial Number:
Machine Settings Engine