TM 1-1520-238-23
6-143
6.31.
ENGINE NOSE GEARBOX OIL JET FILTERS REMOVAL/INSTALLATION
6.31.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.31.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
10 - 50 inch-pound 1/4-inch drive click type torque
wrench (item 434, App H)
Materials/Parts:
Packing (one per filter)
Protective bolt (AN5-60)
Petrolatum (item 138, App F)
Wire (item 226, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.123
Engine nose gearbox fairings and shrouds
removed
6.33
Engine nose gearbox flexible coupling, fan
impeller, and inlet diffuser removed (only if
removing inboard oil jet filter on right engine
nose gearbox)
NOTE
This task is typical for all No. 1 or No. 2 engine nose gearbox oil jet filters.
Top aft oil jet on right engine nose gearbox has been replaced with a gear mesh plug due to
addition of an inboard oil jet. Do not remove gear mesh plug.
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