TM 55-1520-240-23-5
6-200
ADJUST ENGINE TRANSMISSION MAIN OIL PUMP
6-200
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Torque Wrench, 0 to 150 Inch-Pounds
Workstand
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
Cargo Ramp Open and Level (Task 2-2)
NOTE
Procedure is same to adjust left or
right engine transmission pump.
Adjustment of left pump shown here.
1.
Remove lockwire from locknut (1) and setscrew
(2). Hold setscrew and loosen locknut.
2.
Turn setscrew 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.
6-660
