TM 55-1520-240-23-4
5-24.1
INSPECT PITCH-VARYING HOUSING SEAL SURFACES
5-24.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
Technical Inspection Tool Kit, NSN 5180-00-323-5114
Materials:
Alodine (E65)
Gloves (E184.1)
Wash Primer (E302)
Epoxy Primer (E292.1)
Abrasive Paper (E10)
Tape (E388)
Solvent (E162)
Cloths (E120)
Personnel Required:
Aircraft Powertrain Repairer
Inspector
Equipment Condition:
Off Helicopter Task
1.
Inspect pitch-varying housing (1) at seal seating
surfaces (2). Nicks, gouges and scratches shall
not exceed 0.010 inch depth.
2.
Blend out surface defects as follows:
a.
Protect surfaces around area to be repaired.
Use tape (E388).
Do not contaminate bearings. Dirt can
damage bearing surfaces.
b.
Blend out damage to surface, at least 10
times as wide as damage. Do not blend
deeper than damage. Use abrasive paper
(E10).
Solvent (E162) is flammable toxic and
can irritate skin and cause burns.
Use only in well-ventilated area, away
from heat and open flame. In case
of contact, immediately flush skin
or eyes with water for at least 15
minutes. Get medical attention for
eyes.
c.
Clean reworked area. Use cloth (E120) moist
with solvent (E162). Wear gloves (E184.1).
INSPECT
5-132
