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TM 10-4930-247-13&P
5-2. NOZZLE ASSEMBLY (D1) REPAIR - cont.
(2)
Leakage Test.
WARNING
System is under high pressure. Injury to personnel could result from ruptured
line/fitting or faulty component. Always wear eye protection. Never exceed test
pressure.
(a)
Connect D1 nozzle to HEMTT tanker fuel hose.
(b)
Connect D1 nozzle to recirculation adapter on HEMTT tanker.
NOTE
Be sure to bleed trapped air from CCR and recirulation nozzles and hoses before
applying pressure. Errors in pressure indications may result from trapped air.
(c)
Operate HEMTT tanker and adjust pressure to 5 psig (refer to TM 9-2320-279-10-1). Maintain
pressure for one minute.
(d)
Repeat test at 60 psig and 120 psig. There should be no evidence of external leakage from nozzle
during any portion of test.
(e)
Adjust HEMTT tanker pressure to 0 psig (refer to TM 9-2320-279-10-1).
(f)
Disconnect D1 nozzle from recirculation adapter on HEMTT tanker.
(g)
Operate HEMTT tanker and adjust to 5 psig (refer to TM 9-2320-279-10-1).
Maintain pressure for one minute.
(h)
Repeat test at 60 and 120 psig. There should be no evidence of external leakage
from D1 nozzle during any portion of test.
(i)
Shut down HEMTT tanker (refer to TM 9-2320-279-10-1)
(j)
Disconnect D1 nozzle from HEMTT tanker fuel hose.
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