Gravely 950001, Maintenance Manual

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7.2 STAND-BY MODE (NEUTRAL)
With all directional valves in the neutral position, and
the engine/pump running, the system is in the stand-by
mode. In this mode oil is circulating around the system
doing “no productive work”. The system goes into this
mode whenever all directional valve levers are in
neutral position. Although the system is doing no productive work, this mode is useful, by circulating oil
through both the pressure and return line filters and
removing any contaminates that may exist in the oil.
MAIN RELIEF VALVE
MAIN RELIEF VALVE
PRESSURE
FILTER
RETURN
FILTER
LIFT CYL-
INDER
L.H.
MOTOR
CROWD
CYLINDER
R.H.
MOTOR
OVERCENTER VALVE
PRESSURE FLOW IN AND
RETURN FLOW OUT
PORT RELIEF VALVE
IN
OUT
OVERCENTER VALVE