TM 1-1520-238-23
6-109
6.20.
ENGINE NOSE GEARBOX OIL FILTER SAFETY RELIEF VALVE REPLACEMENT
6.20.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.20.2. 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)
Materials/Parts:
Packing
Assembly fluid (item 30, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.123
Engine nose gearbox fairings and shrouds
removed
6.18
Engine nose gearbox oil filter bowl, strainer
element, and differential pressure switch
(lockwired type) removed
or
6.19
Engine nose gearbox oil filter bowl, strainer
element, and differential pressure switch
(retainer ringed type) removed
NOTE
This task is typical for either No. 1 or No. 2
engine nose gearbox oil filter safety relief
valve.
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M04-2767-1
