Figure 7-16.—Internal features of the Stratopower pump.
Figure 7-17.—Mechanical drive.
Figure 7-18.—Fluid displacement.
bore, pressure opens the check spring and a quantity
of fluid is forced past. Combined back pressure and
check spring pressure closes the check spring when
piston bypass ports align with the cylinder block
bypass passage. The partial vacuum occurring in the
cylinder during the piston return causes reservoir
fluid to flow from the intake loading groove into the
cylinder.
Pressure Control.—A schematic diagram of the
pressure control mechanism is shown in figure 7-19.
Pressure is bled through the control orifice into the
Figure 7-19.—Pressure control mechanism.
7-17
