TM 55-1520-240-23-1
1-102
PREPARE HELICOPTER FOR SHORT TERM STORAGE
(Continued)
1-102
c.
Deleted.
d.
Disconnect fuel line from fuel filter inlet port.
Plug fuel line. Use a high pressure plug.
e.
Unplug power supply connector from ignition
exciter.
f.
Disconnect fuel lines from main fuel manifold
and start fuel nozzle.
g.
Connect a drain hose to each disconnected
line. Place the free ends of the two drain
hoses into a 1 quart container.
h.
Check that utility hydraulic system
accumulator is charged to 3000 psi pressure
(Task 1-64).
i.
Apply dc electrical power to aircraft (Task
1-37).
j.
Apply utility hydraulic power to aircraft (Task
1-38).
k.
Have helper, in cockpit, hold APU switch to
START until all residual fuel has been cleared
from the fuel control unit into the 1 quart
container.
l.
Have helper set APU switch to OFF.
m.
Connect a supply of lubricating oil (E251) to
fuel filter inlet port.
n.
Have helper in cockpit hold APU switch to
START until lubricating oil (E251) flows from
drain hoses into 1 quart container.
o.
Have helper set APU switch to OFF.
p.
Remove dc electrical power from aircraft.
q.
Remove utility hydraulic power from aircraft.
r.
Blow residual fuel from start fuel nozzle and
main fuel manifold. Use low pressure air.
s.
Remove lubricating oil supply from fuel filter
inlet port. Install cap on fuel filter inlet port.
t.
Remove drain hoses.
u.
Connect fuel lines to main fuel manifold and
to start fuel nozzle.
v.
Connect power supply connector to the
igniter exciter.
w.
Remove APU oil sump drain plug. Drain
lubricating oil (E251) into suitable container.
x.
Install drain plug.
Do not apply solvent to cable
insulation, rubber, or gasket material.
Solvents can cause damage and
deterioration to such materials.
y.
Clean external metal surfaces of APU. Use a
clean cloth (E120) and solvent (E161).
z.
Dry clean surfaces of APU. Use a clean cloth
(E120) or low pressure compressed air.
aa.
Install APU exhaust protective cover (Task
1-32).
ab.
Seal APU air inlet. Use barrier material (E81)
and tape (E388).
ac.
Place a tag on the APU switch stating APU
PRESERVED. DO NOT OPERATE.
LOG BOOK ENTRIES
15.
Enter this data in log book as follows:
a.
Preservation data.
b.
Date aircraft was placed in storage.
c.
Data from Aircraft Inspection and
Maintenance Record (DA Form 2408-13).
d.
Data from Historical Record for Aircraft (DA
Form 2408-15) (DA PAM 738-751).
NO BREAK - WORK HARDER
NO BREAK - WORK HARDER
FOLLOW-ON MAINTENANCE:
Inspect helicopter (Task 1-95).
END OF TASK
1-376
