TM 1-1520-238-23
Change 5
5-45
5.8.
MAIN ROTOR BLADE PHASE ADJUSTMENT
5.8.1. Description
This task covers:
Checking Phase Adjustment. Phase Adjustment.
5.8.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
1 3/8 x 1/2-inch drive open end box socket wrench
crowfoot attachment (item 78, App H)
1/2-inch drive ratchet socket wrench handle (item 172,
App H)
Aircraft maintenance platform (item 211, App H)
Rigging pin set (item 224, App H) (p/o item 390,
App H)
Helicopter rotor head balance and blade tracking test
equipment (item 354, App H)
1 1/16 & 1 1/8-inch box wrench (item 410, App H)
700 - 1600 inch-pound 1/2-inch drive click type torque
wrench (item 433, App H)
150 - 750 inch-pound 3/8-inch drive click type torque
wrench (item 442, App H)
Rod end centering fork (Figure D-444, App D)
Materials/Parts:
Wire (item 225, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
One person to assist
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
TM 1-1520-238-T
Collective flight controls rig-
ging operational check per-
formed
Cyclic flight controls rigging
operational check per-
formed
1.62
Rotor brake off
2.2
Access panels L200 and
R200 removed
WARNING
FLIGHT SAFETY PART
The main rotor blade 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.
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M04-3042-3
