TM 55-1520-240-23-9
11-231
REMOVE AFT LCT YOKE BUSHINGS (AVIM)
11-231
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Electric Gun Heater, NSN 4940-00-785-1162
Pyrometer
Bolt, 5/8 Inch Diameter X 9 Inches Long
Plain Bushing, 3/4 Inch OD X 5/8 Inch ID X 2-1/2
Inches
Plain Bushing, 1-7/16 Inches OD X 1-1/4 Inches ID
X 2 Inches
Plate, 2 Inches OD X 1/2 Inch
Materials:
Kevlar Gloves (E187)
Personnel Required:
Machinist
References:
TM 1-1520-253-23
Equipment Condition:
Off Helicopter Task
Do not heat yoke over 230ºF (110ºC).
Damage to shotpeened surface will
result.
NOTE
If a crack in the yoke is suspected
during removal, refer to TM
1-1520-253-23.
1.
Heat yoke lug (1) with heat gun. Do not exceed
230ºF (110ºC). Use pyrometer to measure
temperature. Wear gloves (E187).
2.
Position large bushing (2) against outer surface
of lug (1). Wear gloves (E187).
3.
Install bolt (3) through plate (4), bushing (2), lug
(1), and bushing (5). Install washer (6) and nut
(7).
4.
Tighten nut (7) to push bushings (8, 9, and 10)
from lug (1).
5.
Remove nut (7), washer (6), bushing (5), bolt (3),
plate (4), and bushing (2). Remove bushings (8,
9, and 10) from bushing (2).
6.
Remove large washer (11) from lug (1).
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