TM 55-1520-240-23-4
5-114
BALL SPHERICAL BEARING FRICTION CHECK
5-114
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanics Tool Kit, NSN 5180-00-323-4692
Technical Inspection Tool Kit, NSN 5180-00-323-5114
Dial Indicating Scale, 0 to 100 Pounds
Torque Wrench, 100 to 750 Inch-Pounds
Wood Blocks (2), 5 x 2 x 3/4 Inches
Web Strap
Materials:
Twine (E433)
Parts:
Cotter Pins
Personnel Required:
Medium Helicopter Repairer (2)
Inspector
References:
Task 5-97
Task 5-99
Task 5-115
Task 5-116
Task 5-123.1
Task 5-132
Task 5-133
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
One Forward and One Aft Rotary-Wing Blade
Tied-Down (Task 1-26)
Work Platform Open (Task 2-2)
Safety Blocks Removed (Task 11-29)
NOTE
Ball spherical friction check may
be performed off helicopter with
swashplate temporarily installed on
slider shaft.
Spherical bearing friction check is
same for forward and aft swashplates.
Aft swashplate is shown here.
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