TM 55-1520-240-23-1
1-99
SERVICE HELICOPTER AFTER FLYABLE STORAGE
(Continued)
1-99
4.
Record date aircraft was prepared for service on
forms DA 2408-13 and 2408-15 in aircraft log
book (DA PAM 738-751).
PREPARE LANDING GEAR
5.
Remove covering.
6.
Service tires (Task 1-73).
7.
Clean landing gear. Do not clean polished
pistons of shock struts. Use cloth (E120) damp
with solvent (E161). Wear gloves (E186).
8.
Remove tape and barrier material. Clean
polished pistons of shock struts. Use cloth
(E120) damp with hydraulic fluid (E197). Wipe
pistons dry. Apply hydraulic fluid to pistons.
9.
Lubricate landing gear (Task 1-88).
PREPARE ELECTRICAL SYSTEM
10.
Set EMER EXIT LTS switch to DISARM.
11.
If removed, install battery (TM 11-1520-240-20).
Service battery, if needed (TM 11-6140-203-23).
12.
Connect battery (Task 1-39).
PREPARE FUEL SYSTEM
13.
Drain water from fuel tanks. Fill tanks (Task
1-51).
PREPARE ROTARY-WING BLADES
14.
Remove tiedown lines from blades (Task 1-26
or 1-27).
PREPARE ROTOR SYSTEM
15.
Check sight indicators in shock absorbers,
vertical hinge pin bearing oil tanks, pitch varying
bearing oil tanks, and hub oil tanks. Service if
required (Tasks 1-54 thru 1-58).
PREPARE HYDRAULIC SYSTEMS
16.
Service flight control and utility hydraulic system
tanks (Tasks 1-59 thru 1-62). Check that
accumulators are pressurized (Tasks 1-63 thru
1-68).
17.
Operate flight control and utility hydraulic
systems (TM 55-1520-240-10).
18.
Check hydraulic systems for leakage (Task 7-7).
PREPARE DRIVE SYSTEM
19.
Check drive system lubrication.
20.
Service drive system (Tasks 1-54 and 1-89).
PREPARE AUXILIARY POWER UNIT
21.
Remove barrier material and tape from APU inlet.
22.
Clean inlet area. Use cloth (E120) damp with
solvent (E161).
23.
Service APU (Task 1-53).
24.
Start and operate APU. Check that APU operates
normally (TM 55-1520-240-10).
25.
Shut down APU (TM 55-1520-240-10).
26.
Record date APU was prepared for service on
DA Forms 2408-13 and 2408-15 of aircraft log
book (DA PAM 738-751).
PREPARE ENGINES
27.
Remove barrier material and tape from engine
cowls.
28.
Clean cowls. Use cloth (E120) damp with solvent
(E161). Wear gloves (E186).
29.
Remove foreign matter from engine cowls, air
intakes, and exhausts.
30.
Check that lines, hoses, damps, electrical wires,
and components are secured.
31.
Service engine oil tanks (Task 1-52).
32.
Start engines. Operate engines at GROUND.
Check that engine instruments indicate normal
conditions (TM 55-1520-240-10).
33.
Set ENGINE CONDITION levers to FLIGHT.
Operate engines until temperatures are stable.
34.
Shut down engines (TM 55-1520-240-10).
35.
Record date engine was prepared for service
on DA Forms 2408-13 and 2408-15 of aircraft
log book.
INSPECT
NO BREAK - WORK HARDER
NO BREAK - WORK HARDER
FOLLOW-ON MAINTENANCE:
None
END OF TASK
1-368
