TM 55-4920-394-13&P
b.
Push emergency stop button (20). (Red mushroom button on panel.)
2-9. Fluid Sampling . A needle type sampling valve is provided to aid in taking samples for fluid
contamination analysis. The valve is located on the control panel.
To take fluid samples, operate the unit with the FLUID BYPASS valve open and open sample valve.
2-10. Aircraft Fill And Test Procedures.
2-11. Positioning And Connecting The Test Stand To Aircraft. Position and connect the test stand for
aircraft test as follows:
a.
Move the test stand to the operating site using a suitable towing vehicle.
b.
Position the test stand with respect to the aircraft so that the hoses can be connected between the
aircraft and the test stand without sharp bends orkinks.
c.
Set the brakes by pulling up on the brake lever.
d.
Raise the tow bar and secure it in its vertical position using the tow bar latch.
e.
Remove the hoses from-the front of the test stand.
f.
Check that the connector fittings on the hoses and the 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.
g.
Make the necessary hose connections between the aircraft and the outlet and retur fittings on the
n
top of the test stand.
2-12. Filling The Aircraft Reservoir . The following procedure can be used to fill an aircraft reservoir or to
replace any fluid lost when connecting the hoses. To completely fill and bleed an aircraft system that has been
drained, refer to paragraph 2-13.
NOTE
Refer to the applicable aircraft publication for proper fill procedures.
a.
Turn the PRESSURE SELECTOR valve (6, fig. 2-1) to the BOOST OUTLET position.
b.
Position RESERVOIR SELECTOR valve (28) to ship reservoir.
NOTE
The fill system pressure switch is set at 80 psig.
2-9
