TM 55-1520-240-23-5
6-172
ADJUST COMBINING TRANSMISSION MAIN OIL PUMP
6-172
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s 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
Pylon Access Doors Open (Task 2-2)
1.
Remove lockwire from locknut (1) and setscrew
(2). Hold setscrew from turning 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) from turning. Torque locknut
(1) to 60 inch-pounds.
6-576
