Figure 3-9.--Hydraulic pump assembly.

HYDRAULIC PUMP ASSEMBLY

control and indicators for operating and monitoring the

SGSI system from a remote location. It contains the

The hydraulic pump assembly (fig. 3-9) is a self-

READY and NOT READY lights deseribed previously.

contained medium-pressure, closed-loop system used

The panel also contains an OVERTEMP light to indicate

to supply hydraulic pressure for the stabilized platform.

when the hydraulic fluid is heated to a temperature

This assembly consists of an electric pump motor, a

higher than 135F5, a source failure light to indicate

coupling unit, a hydraulic pump reservoir, valves,

piping, and an electrical system. All components are

that one or more of the GSI source lights are burned out,

mounted on a steel base and comprise a complete self-

a variable transformer to control the intensity of GSI

contained 1400-psi hydraulic power supply.

light, and a panel illumination control. A standby light

Hydraulic fluid is stored in a reservoir and piped to

will be energized when the main switch on the electronic

a motor-driven pump. The output is pressurized by the

enclosure assembly is on.

Figure 3-9.--Hydraulic pump assembly.

3-6