TM 55-4920-394-13&P
Flow Rate - 20 gpm
Pressure - 1500 psig
(dumped over stand relief valve)
b. Close all doors and allow test stand to run. When temperature rises to 165 degrees F 5 degrees, horn
should sound to indicate excessive temperature. Observe FLUID TEMPERATURE gage during operations.
c. Open all doors, and reduce pressure to minimum to allow test stand to cool down. Horn shall stop
sounding when temperature drops below 160 degrees F.
4-45. Flow Tests.
a. Operate test stand using an external reservoir as follows:
Flow rate - 6 gpm
Pressure - 800 psig
b. Raise pressure to 1500 psig and observe flow. Flow must remain approximately the same.
c. Raise pressure to 3000 psig and observe flow. Flow must remain approximately the same.
d. Adjust flow to 12 gallons per minute and pressure to 800 psig.
e. Repeat steps b and c and observe flow. It must remain approximately the same.
f. Adjust flow to 20 gallons per minute and pressure to 800 psig.
g. Repeat steps b and c and observe flow. It must remain approximately the same.
h. Adjust flow to 30 gallons per minute and pressure to 800 psig.
i. Repeat steps b and c and observe flow. It must remain approximately the same.
4-46. Load Test.
NOTE
Use external heat exchanger for fluid cooling.
a. Operate test stand as follows:
Pressure - 500 psig
Flow rate - 15 gpm
Compensator
Control - 1500 psig O flow
4-15
