4-83. PILOT VALVE MAINTENANCE (Con't).
c. CLEANING AND INSPECTION
Dry cleaning solvent P-D-680 is
toxic and flammable. Always wear
protective goggles, face shield,
and gloves, and use only in a well-
ventilated area. Avoid contact with
skin, eyes, and clothes and DO
NOT breathe vapors. DO NOT use
near open flame or excessive heat.
The solvent's flash point is
100 F-138 F (38 C-59 C). If you
become dizzy while using cleaning
solvent, immediately get fresh air
and medical help. If solvent con-
tacts eyes, immediately wash your
eyes with water and get medical
Compressed air used for drying
purposes must not exceed 30 psi
(207 kPa). Wear protective cloth-
ing (goggles, face shield, and
gloves) and use caution to avoid
injury to personnel.
(1) Clean all removed components
with dry cleaning solvent.
Use compressed air to thoroughly
dry components and to clear all
(3) Replace any damaged compo-
Install valve disk (11), spring (9),
and washer (8) inside valve
flange (10). Compress valve disk
and install new retaining ring (7)
in valve disk groove.
(2) Install diaphragm (6) over valve
flange (10) with center cup of dia-
phragm fitted over end of valve
(3) Install access cover (2) with six
washers (5) and lockscrews (4).
Ensure that lockscrews are se-
curely and evenly tightened.