TM 1-1740-204-13&P
NOTE
If tank pressure is not adequate for the task, nitrogen charging can be accomplished using the
booster pump by proceeding to paragraph 2-11. Otherwise, replace supply tank(s).
(4)
Adjust the high pressure regulator, R2, to the required servicing pressure measured on gauge, G4. Then
open high pressure shut-off valve, V3.
(5)
Connect the inflating chuck, C6, of the charging hose assembly to the inlet port of the aircraft component
to be serviced. Do not over torque the inflating chuck, C6.
(6)
Refer to applicable aircraft manuals for charging procedures. Open the shut off valve, V4, in the high
pressure servicing hose.
(7)
Depressurize and shut down the system per paragraph 2-7. Leave the shutoff valve, V4, in the high
pressure charging hose open to vent the line.
(8)
Remove the inflating chuck, C6, from the inlet port of the aircraft component.
b.
Tire Servicing:
(1)
Setup the cart per paragraph 2-5. Use one or two tanks with adequate pressure to complete the charging
procedure for the tire.
(2)
Connect the tire filling hose from the tire filling output, C4, to the tire using the appropriate inflating chuck.
(3)
Slowly open valve(s) located on the nitrogen tank(s).
(4)
Verify the specified tire pressure per the applicable aircraft manual.
(5)
Adjust the T-handle of the low pressure regulator, R1, pressure as indicated on gauge, G2, to the specified
tire pressure.
(6)
Depressurize and shut down the system per paragraph 2-7.
2-11. NITROGEN CHARGING USING BOOSTER PUMP (See Fig. 2-1)
a.
High pressure servicing using nitrogen to drive the booster pump:
(1)
Setup the cart per paragraph 2-5. Use one or two tanks with adequate pressure to complete the charging
procedure for the given accumulator or strut.
(2)
Slowly open valve(s) located on the nitrogen tank(s).
NOTE
Replace tank(s) if pressure is below 350 psi or if it will be reduced to 350 psi during the charging
operation.
(3)
Read tank pressure on regulator, G1.
(4)
Open the booster shutoff valve, V1. Raise the pressure by slowly adjusting the low pressure regulator, R1,
until the indicated pressure on the pump outlet pressure gauge,
2-12
