COMPONENT OPERATION / Pilot Valve Full Stroke (Output Curve: E to F) 1. When the control lever is fully stroked, pusher (2) is moved downward until pusher (2) on the front attachment / swing pilot valve comes in contact with the casing shoulder, or cam (1) on the travel pilot valve comes in contact with the casing. 2. At this time, the bottom surface of pusher (2) di- rectly pushes spool (6). Therefore, even if pres- sure in the output port increases further, hole (7) on spool (6) is kept open. 3. Consequently, pressure in the output port is equal to that in port P. F E Pilot Pressure D C B A Lever Stroke NOTE:
Total lever strokes for front attachment and swing controls are determined by stroke dimension (E) of pusher (2). Total lever stroke for travel control is determined by stroke dimension (E) of cam (1). T523-02-05-001 T3-4-8