REPAIR HUB OIL TANK (AVIM)
Metallic dust and paint chips can block
oil passages and damage rotary-wing
head. Tank openings must be plugged
before reworking or refinishing tank.
Procedure is same to repair forward
and aft hub oil tanks except for
differences noted in text.
Plug any filler plug hole (1), screw hole (1.1),
sight indicator hole (2), or oil hole (3) near
rework and refinish area. Cover studs (3.1). Use
On aft hub oil tank (4) only, check machined
surfaces of lugs (5) for scores, nicks, or gouges.
Blend damage with crocus cloth (E122). Damage
shall not exceed 0.005 inch deep by 1.0 inch
Blend damage on all other areas of tanks (4 and
6) with crocus cloth (E122). Damage limit is 0.02
inch deep by 2.5 inches long.
Fluorescent inspect damage over 0.010 inch
deep before rework (TM 1-1500-335-23). If a
crack is suspected, refer to TM 1-1520-253-23.
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
Clean area with naphtha (E245) and cloths
(E120). Wear gloves (E184.1). Let area air dry.