Vibratory system (HIGH AMPLITUDE)
(1) Vibratory pump. (2) Directional control valve. (3) Charge pressure line. (4) Oil filter (vibratory charge pressure). (5) Flushing relief valve. (6)
Vibratory motor. (7) Orifices. (8) High pressure relief valve. (10) Charge pressure relief valve. (11) Charge pump. (12) Closed circuit loop line. (13)
Line (14) Pilot passage. (15) Hydraulic oil strainer. (16) Hydraulic oil tank. (17) Closed circuit loop line. (18) Flushing valve. (19) Pilot passage.
(20) Lines to the return manifold (three). (21) Oil cooler. (A) Solenoid. (B) Solenoid.
Charge pressure oil flows through passage (3) to the
directional control valve (2) when the engine is operating.
The solenoid cold (B) on the control valve (2) receives an
electrical current when the following conditions occur:
The vibratory control switch which is located on the
propel lever is in the ON position.
HIGH AMPLITUDE has been activated. The switch for
high amplitude is located on the vibratory amplitude
control. The vibratory amplitude control is located on
the operator control console.
Engine speed is high.
The electrical current to solenoid (B) causes the spool in the
directional control valve (2) to shift to the position in the above
illustration. This allows control oil from passage (3) to be
directed to the proper side of the servo in pump (1). The
control oil moves the swashplate to the maximum angle for
high amplitude. Orifices (7) control the oil flow to the pump
servo for smooth movement of the swashplate.