HIGH PRESSURE FILTER - TM-55-4920-335-140016

TM 55-4920-335-14

1-13. HIGH PRESSURE FILTER. The high pressure filter (5,

from the aircraft system when using fluid from the aircraft

figure 1-3) is placed in the line between the high pressure

reservoir or when draining the aircraft reservoir. A hydraulic

pump and the relief valve assembly to micronically filter the

fluid level indicator mounted on the control is connected to the

hydraulic fluid coming from the high pressure pump. The filter

reservoir to indicate fluid content. The top plate of the

uses a replaceable type element AN6235-4A.

reservoir may be removed for access to the interior.

1-14. LOW PRESSURE FILTER. The low pressure filter (7,

1-17. ELECTRICAL SYSTEM. Major components of the

figure 1-3) is located in the suction line between the manifold

electrical system are : 12 volt battery (10, figure 1-3), generator

and pressure pump to micronically filter the hydraulic fluid from

(2, figure 1-4), and voltage regulator (3, figure 1-4). The

the Test Stand and aircraft reservoirs.

It contains a

electrical system is shown schematically in figure 1-5.

replaceable type element AN6236-3.

1-18. SIMPLIFIED PRINCIPLES OF OPERATION. (Refer to

1-15. FUEL TANK. The fuel tank (4, figure 1-4) will hold 13

hydraulic schematic, figure 1-6.) The hydraulic fluid may be

gallons of fuel conforming to Military Specifications MIL-G-

taken from either the Test Stand reservoir (1) or the reservoir

3056 or MIL-F-5572. The tank is equipped with strainer in the

in the aircraft being tested through the suction inlet. The

fill neck, a drain plug in the bottom, and a fuel level sending

hydraulic fluid thus obtained is then forced under pressure by

unit.

the high pressure pump (12) through checkvalve (14), high

pressure filter (12), relief valve (20), and a four-way outlet

1-16. HYDRAULIC RESERVOIR. The hydraulic reservoir (1,

selector valve (23) to the selected pressure outlet (26 or 27)

figure 1-4) has a maximum capacity of 28 gallons. A reservoir

shutoff valve is provided for isolating the Test Stand reservoir

1. Hydraulic Reservoir

3. Voltage Regulator

4. Fuel Tank

Figure 1-4. Test Stand - Right Side

1-6