TM 1-1520-238-23
11-114
Change 4
11.18.
SECONDARY MAIN ROTOR SCISSOR REMOVAL/INSTALLATION
11.18.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
11.18.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
0 - 300 inch-pound 3/8-inch drive click type torque
wrench (item 439, App H)
0 - 600 inch-pound 3/8-inch drive dial indicator torque
wrench (item 447, App H)
Materials/Parts:
Cotter pin (3)
Corrosion preventive compound (item 62A, App F)
Sealing compound (item 176, 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
11.18.3. Removal
CAUTION
To prevent damage to main rotor and
scissors assemblies, the secondary scis-
sors must be identified and marked prior
to removal to insure proper installation.
a. Remove one side of secondary main rotor
scissor (1) from main rotor hub lower shoe (2).
(1) Remove sealant from attaching hardware
(para 1.47).
(2) Remove and discard cotter pin (3).
(3) Remove nut (4) and washer (5).
(4) Remove bolt (6), washer (7), bearing (8), and
bushing (9).
GO TO NEXT PAGE
M04-1723-1
2
5
4
8
6
1
7
9
3
M04-1723-2
