TM 5-3895-383-24Vibratory SystemHIGH AMPLITUDEIllustration 17Vibratory 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 thedirectional control valve (2) when the engine is operating.The solenoid cold (B) on the control valve (2) receives anelectrical current when the following conditions occur:The vibratory control switch which is located on thepropel lever is in the ON position.HIGH AMPLITUDE has been activated. The switch forhigh amplitude is located on the vibratory amplitudecontrol. The vibratory amplitude control is located onthe operator control console.Engine speed is high.The electrical current to solenoid (B) causes the spool in thedirectional control valve (2) to shift to the position in the aboveillustration. This allows control oil from passage (3) to bedirected to the proper side of the servo in pump (1). Thecontrol oil moves the swashplate to the maximum angle forhigh amplitude. Orifices (7) control the oil flow to the pumpservo for smooth movement of the swashplate.11-19
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