TM 1-1520-238-T-7
10–205
10–73. FUEL/DEFUEL CONTROLLABLE CHECK VALVE – DOES NOT OPEN
10–73
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Personnel Required:
67R
Attack Helicopter Repairer
References:
TM 1-1520-238-23
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Check fuel/defuel controllable check valve
control cable.
Is control cable intact?
YES
Go to step 2.
NO
Replace fuel/defuel controllable
check valve
(TM 1-1520-238-23).
2. Check fuel cell filler neck for obstructions.
Are obstructions present?
YES
Clear filler neck of obstructions.
Go to paragraph 10–72.
NO
Go to step 3.
3. Check fuel check valve control cable.
Is cable free from filler neck hold–down
detent?
YES
Replace fuel/defuel controllable
check valve
(TM 1-1520-238-23).
NO
Replace fuel cell filler neck
(TM 1-1520-238-23)
END OF TASK
