RING 2004959 - Caterpillar

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Press down key (2) in order to move the cursor to line 4 and highlight "STANDBY".
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Line 4 may show any number.
Press OK key (8) . This will automatically set the engine speed to high idle. This will also change the display from "STANDBY" to a number.
With the engine speed at high idle, move the joystick for the stick until the stick is at full "STICK IN" position (full extension of the stick cylinder). Hold the joystick for the stick in this position.
Push the right joystick slide control FORWARD and BACKWARD 3 times.
Push the right joystick slide control and hold the right joystick slide control FORWARD.
Record the "LOW" pressure reading at pressure tap (38) for the proportional solenoid valve for negative flow control. The pressure specification for the negative control is 1500 50 kPa (220 7 psi). Press left key (3) or press right key (4) in order to change the number on line 4 of the display screen. This action changes the pressure reading on