TM 1-1520-238-23
Change 6
6-309
6.70.
MAIN TRANSMISSION ACCESSORY PUMP FILTER BOWL, ELEMENT, AND PRESSURE
INDICATOR REMOVAL/INSTALLATION
6.70.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.70.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
Bypass filter removal tool (Figure D-460, App D)
Materials/Parts:
Packing (9)
Dry cleaning solvent (item 74, App F)
Petrolatum (item 138, App F)
Wire (item 227, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened; panel R200 re-
moved
6.69
Accessory pump oil pressure switch re-
moved
WARNING
FLIGHT SAFETY PART
The main transmission is a flight safety part. Failure to follow maintenance instructions may
result in serious injury or death of crewmembers and/or serious damage to the helicopter.
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