TM 55-1520-240-23-5
6-151
ADJUST AFT TRANSMISSION MAIN OIL PUMP
6-151
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanics Tool Kit, NSN 5180-00-323-4692
Materials:
Lockwire (E230)
Personnel Required:
Medium Helicopter Repairer
Inspector
Army Rotary-Wing Aviator (2)
References:
TM 55-1520-240-10
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Baffles Under Aft Transmission Open (Task 2-2)
Aft Transmission Drip Tray Removed (Task 2-3)
Cargo Ramp Open and Level (Task 2-2)
1.
Remove lockwire from locknut (1). Hold setscrew
(2) and loosen locknut.
2.
Turn setscrew (2) no more than 1/4 turn to
adjust transmission oil pressure. Turn setscrew
clockwise to increase pressure. Turn setscrew
counterclockwise to decrease pressure.
Required gage pressure is 40 to 70 psi.
3.
Hold setscrew (2). Torque locknut (1) to 60
inch-pounds.
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