A stick cylinder is used to move the stick IN and OUT. When the stick cylinder rod EXTENDS, the stick moves IN. When the stick cylinder rod RETRACTS, the stick moves OUT.
The main hydraulic pumps supply high-pressure oil to the main control valve. The main hydraulic control valve determines the direction and speed of the stick cylinder in proportion to the movement of the joystick. A STICK IN operation is accomplished when the oil delivery from both idler pump and drive pump is supplied to the head end of stick cylinder. Flow combiner proportional hydraulic modulation valve (PHMV) is activated by the machine ECM. Flow combiner spool then shifts to the allowing idler pump oil to combine with drive pump oil. The combined oil from the idler pump and the drive pump then flows to stick Independent metering valve (IMV) section.
Components of the stick system include:
- Stick IMV section
- Stick regeneration valve
- Stick cylinder
Note: Refer to the appropriate sections in this manual for more information.