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TM 1-4920-446-13 & P
Table 2-2. Control Settings
Control
Position
Fluid Pressure Gauge
Shutoff (16)
Selector Valve (8)
Pressure Compensator
Valve (15)
Outlet Selector Valve ( 14)
HP Relief Valve (10)
Flow Limit Adjust (11)
HP Bypass Valve (7)
One quarter turn from fully open
LP filter in position
Adjusted to lowest pressure setting (rotated fully counter-
clockwise)
Closed
Completely counterclockwise
Set to zero flow (rotated fully clockwise)
Open (rotated fully counterclockwise)
i. Adjust flow limit adjust control (11) to obtain a flow of 10 gallons per minute (gpm) as indicated on flowmeter (17).
j. Observe fluid flow meter (17) . Erratic needle movement indicates air presence. If air is entrapped, inter-
mittently activate the bleed valve control to remove air (paragraph 1-19).
k. Decrease the hydraulic fluid flow to a minimum using the flow limit adjust (11, Figure 2-2).
NOTE
HP relief valve (10) must always be set 200/250 psi higher than compensator control (6) to achieve proper flow con-
ditions.
l. Adjust compensator shutoff valve (6) and HP relief valve (10) for correct pressure for the test to be run.
m. Shut down test stand and stop the HP pump in accordance with paragraph 2-8.
2-8. Shutting Down the Test Stand. After making the preliminary adjustments to ensure the test stand is functioning
properly or following a test or fill operation, the stand may be shut down by the following steps:
a. Open HP relief valve (10) by turning completely counterclockwise.
b. Open the HP bypass valve (7).
c. Depress stop button (26).
2-7
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