Operating instructions

TM 55-4920-394-13&P
Volume Control (29) To be set to 'zero' flow
Fluid Bypass valve (24) Open
Reservoir Selector valve (28) Ship reservoir
2-4. Pre-Operation Fill And Bleed Procedure. With controls in the positions specified in paragraph 2-3,
proceed as follows:
a. Remove the hoses from the top of the test stand.
b. Check that the connector fittings on the hoses and outlet and return fittings on the top of the test stand
are clean. If the fittings are dirty, wash the fittings with solvent, Federal Specification P-D-680.
c. Connect hoses to corresponding outlet and return fittings (fig. 1-1). Connect high pressure hose to low
pressure hose using adapters.
d. Place FILL PUMP switch (16, fig. 2-1) in ON Position.
e. Place SYSTEM FILL valve in ON position.
Table 2-1. Controls and Instruments
CONTROL OR INSTRUMENT DESCRIPTION AND FUNCTION OR
LOCATION OPERATION
Flowmeter Tubular type; 0-30 gpm Indicates the volume
capacity; panel of fluid returning to
the system circuit.
Output pressure gauge 0-6000 psig located on Indicates system
panel pressure of fluid at
stand outlets.
BOOST PUMP PRESSURE Compound gauge; 0-30 in Indicates pressure at
gauge hg vacuum 0-300 psig on point selected by
panel valve.
SIGHT TUBE Lighted sight tube on Flow of air-free
pan fluid is observed.
FILTER BLEED valve Spring loaded push Bleeds air in cooler
button valve and filter.
PRESSURE SELECTOR valve 4-Way selector valve on Selects pressure
panel readings at boost
pump outlet, H.P.
pump inlet suction
return line (boost
pump inlet) and back
pressure.
2-2