TM 1-1520-238-23
Change 8
7-197
7.48.
LONGITUDINAL SERVOCYLINDER INSTALLATION
7.48.1. Description
This task covers:
Installation.
7.48.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
1 x 3/8-inch drive open end box socket wrench
crowfoot attachment (item 77, 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)
5/32-inch hexagon x 1/4-inch drive screwdriver socket
wrench attachment (item 324, App H)
1 1/16 & 1 1/8-inch box wrench (item 410, App H)
15/16 & 1-inch box wrench (item 412, App H)
700 - 1600 inch-pound 1/2-inch drive click type torque
wrench (item 433, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
0 - 75 inch-pound 1/4-inch drive dial indicator torque
wrench (item 446, App H)
Materials/Parts:
Bolt MS27576-10-46 (for alinement)
Cotter pin (3)
Corrosion preventive compound (item 62A, App F)
Hydraulic fluid (item 92, App F)
Sealing compound (item 175, App F)
Sealing compound (item 176, App F)
Tubing (item 213A, App F)
Wire (item 222, App F)
Personnel Required:
67R
Attack Helicopter Repairer
One person to assist
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 longitudinal servocylinder and/or components of the longitudinal servocylinder 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.
Installation of a non-BUCS servocylinder in a BUCS equipped helicopter will render the
BUCS system inoperative. Installation of a BUCS servocylinder in a helicopter not equipped
with BUCS may result in loss of flight controls, serious injury or death to crewmembers,
and/or serious damage to helicopter.
GO TO NEXT PAGE
