TM 1-1520-238-23
5-163
5.35.
MAIN ROTOR STRAP PACK REPLACEMENT
5.35.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
5.35.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
3/4 x 1/2-inch drive socket wrench adapter (item 5,
App H)
Light duty laboratory apron (item 27, App H)
0.002 - 0.040-inch gap setting gage (item 147, App H)
Chemical protective gloves (item 154, App H)
3/4-inch drive hinged socket wrench handle (item 173,
App H) (2)
Rigging pin set (item 224, App H) (p/o item 390,
App H)
Adjustable air filtering respirator (item 262, App H)
1 1/8 x 3/4-inch drive deep socket wrench socket
(item 295, App H)
1 1/4 x 3/4-inch drive socket wrench socket (item 309,
App H)
1 1/16 & 1 1/8-inch box wrench (item 410, App H)
150 - 750 inch-pound 3/8-inch drive click type torque
wrench (item 442, App H)
Materials/Parts:
Nut (8)
PLI washer (8)
Cloth (item 52, App F)
Lubricant (item 114, 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
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
5.3
Main rotor blades removed
1.72
External hydraulic power applied
1.97
Maintenance crane installed
WARNING
FLIGHT SAFETY PART
The main rotor strap pack 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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