TM 1-1520-238-23
Change 3
5-123
5.25.
MAIN ROTOR PITCH HOUSING REMOVAL
5.25.1. Description
This task covers:
Removal. Cleaning. Inspection.
5.25.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Materials/Parts:
Rope
Cloth (item 52, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
One person to assist
References:
TM 1-1500-204-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
5.23
Main rotor dampers removed
5.33
Main rotor lead lag link removed
11.14
Main rotor blade pitch link disconnected
WARNING
FLIGHT SAFETY PART
The main rotor pitch housing is a flight safety part. Failure to follow maintenance instructions
may result in serious injury or death of crewmembers and/or serious damage to the helicopter.
NOTE
Pitch housings are matched according to weight. Maximum weight should not exceed 26.9 pounds.
Opposite housing must be within 1.5 pounds of each other. Prior to removal, match mark on pitch
housings to facilitate proper matching during installation, i.e., 1 opposite 3 and 2 opposite 4 or A
opposite C and B opposite D.
GO TO NEXT PAGE
