GUIDE 3903179 - Caterpillar

Illustration 5 g01200022
Typical example of the "SERVICE" menu for the monitor
Use the down key (6) in order to scroll through the menu options.
When the "DEVICE TEST" option is highlighted, press the OK key (8) .
Illustration 6 g01200028
After the OK key is pressed, the "DEVICE TEST" menu should appear.
Use the down key (6) in order to scroll through the menu options.
When the "POWER SHIFT PRESS" option is highlighted, press the OK key (8) .
Illustration 7 g01200030
Use the down key (6) in order to highlight the value of the power shift pressure.
Use the right key (2) in order to decrease the value of the power shift pressure. Use the left key (5) in order to increase the value of the power shift pressure.Pressing the left key (5) one time decreases the power shift pressure 10 kPa (1.5 psi). Pressing the right key (2) one time increases the power shift pressure 10 kPa (1.5 psi).Note: The value for power shift pressure on the monitor may not always match the pressure reading on the pressure gauge. Adjust the value on the monitor until the desired power shift pressure is attained on the pressure gauge that is connected to the pressure tap for power shift pressure (11) . The actual power shift pressure must be 2900 kPa (420 psi) on the pressure gauge.Note: To prevent a change in power shift pressure during the adjustment of the line relief valve for the attachment control valve, do not turn the engine start switch to the OFF position.Note: Refer to Systems Operation, "Monitoring System" for the machine for additional information on Service Mode.
Illustration 8 g01199900
Line relief valve (Typical example) (12) Locknut (13) Adjustment screw
Illustration 9 g01454929
(14) Upper line relief valve (15) Lower line relief valveNote: To prevent oil flow to the work tool during this testing and adjusting procedure, close the stop valves in the lines for the work tool.Adjustment of the Line Relief Valve for Attachment Control Valve
Table 1
Pressure Settings for the Line Relief Valve    
311D, 312D and 314D CR    
32500 1000 kPa (4715 150 psi)    
315D and 319D    
37000 1000 kPa (5350 150 psi)    
Select a work tool that provides two-way flow. Refer to Testing and Adjusting, "Work Tool - Select" for the Tool Control System.
To adjust the pressure setting of the upper line relief valve (14) for the work tool, press the device for activation for this position. Hold the device for activation in this position.Note: Relief action of the relief valve for more than ten seconds is not allowed.
Check the pressure in the work tool at the drive pump's pressure tap (9) .
Return the device for activation to the NEUTRAL position.
Compare the pressure reading to the specification in Table 1 for the appropriate machine. If the pressure reading is within the specification, no further adjustment is necessary. If the pressure reading is not within the specification, then proceed to Step 6.
Loosen locknut (12) on the line relief valve for the work tool. The relief valve is located on