HYDRAULIC SYSTEM
ME12002
P1 and P2 Constant, Connected, Loaded
Figure 3-27 P1 and P2 Constant, Connected, and Loaded down the lever and piston positions. See Figure 327.
Balanced condition prerequisites: P1 and P2 are constant, with no regulation function, and are connected and loaded at the same delivery pressure. P1 is connected to the front pump delivery port and P2 is connected to the rear pump delivery port. See Figure 3-27. During the balanced condition: •
Power piston force is balanced against the power spring pack force.
•
Main spool (652) metering position is in a null position. See Figure 3-27.
•
Main spool (652) transports enough fluid to the larger stepped diameter area of power control piston (621) to maintain a power piston force balance across the servo piston (532). See Figure 3-27.
•
The larger diameter area on the left side of the servo piston (532) pressure is approximately one-fourth (¼) of the pumps total delivery pressure. See Figure 3-27.
Feedback lever (611) maintains the swash plate (212) position, and moves main spool (652). Write 909768/BP1207
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Printed in U.S.A
