INSPECT ROTARY-WING HEAD OIL TANKS FOR ALLOWABLE OIL
VERTICAL HINGE PIN OIL TANKS
Service vertical hinge pin oil tanks (8) (Task
Connect battery (Task 1-39).
Have pilot perform a 30 minute ground run (TM
Disconnect battery (Task 1-39).
Install tiedown line (2) on one aft blade (3) (Task
Tank must be horizontal to get a
correct reading of oil level.
Using tiedown line (3), turn rotor blades (2) so
that oil tank (8) to be checked is horizontal.
Check oil level in sight gage (9) on each side of
oil tank (8). If average level at two gages is at
bottom of sight gage, leakage is excessive.
If leakage is excessive, vertical hinge pin oil tank
seals are defective. Replace seals (Task 5-32
thru Task 5-35).
Close forward transmission fairing work platforms
Close aft pylon work platforms (Task 2-2).
Remove tiedown line from blade (Task 1-26).
END OF TASK