TM 1-1520-238-23
Change 4
11-95
11.14.
MAIN ROTOR PITCH LINK REMOVAL/INSTALLATION
11.14.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
11.14.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
3/8 x 1/2-inch drive socket wrench adapter (item 6,
App H)
Light duty laboratory apron (item 27, App H)
1 5/16 x 3/8-inch drive open end socket wrench
crowfoot attachment (item 95, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
1 1/16 x 1/2-inch drive socket wrench socket (item 305,
App H)
1 1/16 & 1 1/4-inch open end wrench (item 416, App H)
1 1/4 & 1 5/16-inch open end wrench (item 419, App H)
0 - 175 foot-pound 1/2-inch drive dial indicator torque
wrench (item 444, App H)
Materials/Parts:
Cotter pin (2)
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
WARNING
FLIGHT SAFETY PART
The main rotor pitch link and/or components of the pitch link are flight safety parts. Failure
to follow maintenance instructions may result in serious injury or death of crewmembers
and/or serious damage to the helicopter.
Shot-peened surfaces of main rotor pitch links are critical. This part shall be replaced or
have the peening restored if surface has had peening removed by wear or other cause. It
also must be protected from unscheduled heating and external impact during inspection
and other handling procedures.
Heat treated condition of main rotor pitch links is critical to their serviceability. Any indica-
tion of heat oxidizing (discoloration), where visually detectable, requires replacement of the
part. These parts must be protected from unscheduled heating and external impact during
inspection and other handling procedures.
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