OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

OUTPUT SHAFT
210
While doing so, acceleration and deceleration are
controlled by the operator, limited by the setting
of the safety relief valves (54).
OPERATING LEVER
NEUTRAL J
Fig. 36 - Projectile Ring Circuit Diagram
Stopped Between Stations by Operator
17. Between stations, stop position, figure 36. - In instances
of manual control action to stop the drive, th-: equipment
assumes positions and pressure fluid is ported as indicated
by the diagram. Auxiliary pump displacement is vented
to tank. Valve (31) is depressed and pressure line (41) is
ported to line (55), around valve spool (25) and line (51) to
tank.
18. other special hydraulic and mechanical, arrangements
shown by the diagrams, have performance characteristics or
functionAl purposes as follows:
(a) Valve (56) is the auxiliary pump relief valve.
Chamber (57) is directly connected to the auxiliary
pumppressure line. The pressure within
this chamber acts to overcome the spring
setting of the valve and port the auxiliary
pump displacement to tank through line (53).
(b ) A restriction has been placed in the relief
valve operating line to prevent pressure surges
which maycause the relief valve to flutter.
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25