TM 5-2410-240-23-1
0010
ELECTRO-HYDRAULIC CONTROLS CONTINUED
6. Reverse Travel Continued
As a result of the duty cycle settings, inside each hydrostatic pump (Figure 12, Item 1), the proportional solenoid
valve (Figure 12, Item 5) shifts to the right. Pilot oil flows from the line (Figure 12, Item 4) through the proportional
solenoid valve into the passage (Figure 12, Item 2) and then into the chamber of the actuator piston (Figure 12,
Item 7). Inside the chamber, the oil overcomes the force of the opposite spring and the actuator piston shifts to the
right.
As the actuator piston (Figure 12, Item 7) shifts to the right, oil flows from the chamber of the actuator piston into
the passage (Figure 12, Item 6) and then through the proportional solenoid valve (Figure 12, Item 5) and the
passage (Figure 12, Item 3) to the pump case drain.
The displacements of the left and right side hydrostatic pumps increase, and oil flows from the pumps to the left
and right hydrostatic drive motors, respectively. As the oil flows through the motors, the motors rotate and move the
machine backward.
Figure 12. Hydraulic Oil Flow for Reverse Travel.
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