TM 55-1520-240-23-4
5-123.1
INSPECT AND REPAIR BALL SPHERICAL BEARING
5-123.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
Dial Indicating Gage 643J
Fluorescent Penetrant Method
Materials:
Naphtha (E245)
Emery Cloth (E123) or
Abrasive Paper (E13)
Crocus Cloth (E122)
Cloths (E120)
Gauze Sponges (E184)
Gloves (E186)
Acetic Acid (E21)
Alodine Powder (E65)
Personnel Required:
Aircraft Powertrain Repairer
Inspector
References:
TM 1-1500-335-23
TM 1-1520-253-23
Equipment Condition:
Off Helicopter Task
General Safety Instructions:
Naphtha (E245) is combustible and
toxic. It can irritate skin and cause
burns. Use only with adequate
ventilation, away from open flame. In
case of contact, immediately flush
skin or eyes with water for at least
15 minutes. Get medical attention
for eyes.
Do not wear photogray glasses when
fluorescent inspecting. They reduce
ability to see cracks.
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