TM 1-1520-238-23
6-164
6.35.
ENGINE NOSE GEARBOX OIL JET REMOVAL/INSTALLATION
6.35.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.35.2. 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)
0.000 - 0.125-inch dial indicator depth gage (item 145,
App H)
Chemical protective gloves (item 154, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Packing (2 per oil jet)
Removal bolt (AN5-60)
Petrolatum (item 138, 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
6.31
Engine nose gearbox oil jet filter(s) removed
CAUTION
Oil jets on engine nose gearbox are not interchangeable with each other. To prevent damage to engine
nose gearbox, do not intermix or swap oil jets.
NOTE
This task is applicable to outboard, top aft, and top forward oil jet on left engine nose gearbox and
inboard, outboard, and top forward oil jet on right engine nose gearbox.
Removal and installation procedures for outboard and top forward oil jet are typical for either No. 1
or No. 2 engine nose gearbox.
The 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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