TM 1-1520-238-23
1-92
Change 4
1.31.
TAIL ROTOR GEARBOX SERVICING – GREASE
1.31.1. Description
This task covers:
Servicing.
1.31.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
1 5/16 x 3/8-inch drive open end socket wrench
crowfoot attachment (item 95, App H)
Hand lubricating gun (item 205, App H)
Adjustable air filtering respirator (item 262, App H)
0 - 75 inch-pound 1/4-inch drive dial indicator torque
wrench (item 446, App H)
Intermediate gearbox and tail rotor service tool
(figure D-462, App D)
Materials/Parts:
Packing
Grease (item 91, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access fairing L540 removed
CAUTION
Helicopter must be on level surface with both main landing gears equal for proper servicing. To prevent
overfilling or underfilling the gearbox, wait 10 minutes after rotor shutdown before checking.
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