PRIMARY POWER REQUIREMENTS

-3-

(c)

Directional Coil Current

A check that when the proper current is applied

to one coil or the other that the correct hydraulic pressure is

applied to the piston extending or retracting it as determined by

the type of actuator being tested.

(D)

Ancillary Test Circuits

Circuits have been provided to check out the Test

Stand to determine that the actuator test circuits are working and

that they are adjusted properly.

Gauge Pressure Test

(E)

A manifold is included to compare the 0-400 psi

hydraulic gauges to ascertain that they are calibrated.

1-4 PRIMARY POWER REQUIREMENTS

The Actuator Test Stand requires an input of 120 volts 10%

60 Hz. 10 amps.

1-5 TEMPERATURE CAPABILITIES

The Actuator Test Stand is capable of proper operation within

the temperature range of + 40F(+4C) to + 125F (+52C) at

altitudes to 10,000 feet.

1-6 DESCRIPTION OF EQUIPMENT

The Hydraulic Actuator Test Stand (Figure 1) consists

essentially of a hydraulic sump, electric motor driven hydraulic

pump, electric controls for actuator coils, bracket to hold

actuator while under tests and associated filters, plumbing,

The equipment operating controls and indicators are

wiring, etc.

located in a control drawer and on the inside of the top cover.