TM 9-2330-384-14&P
4-83. PILOT VALVE MAINTENANCE.
a.
d.
Removal
Assembly
e.
Bench Test
b.
Disassembly
f.
Installation
c.
Cleaning and Inspection
Equipment Conditions:
General Safety Instructions:
Dry cleaning solvent is flammable and must
Ref
Conditions
l
not be used near open flame. Use only in a
well-ventilated area.
disconnected from pilot valve.
Compressed air used for drying or testing
l
Materials/Parts:
purposes must not exceed 30 psi
(207 kPa).
One preformed packing
l
One retaining ring
l
Dry cleaning solvent (Item 10, Appendix E)
l
Tools:
Tool kit, general mechanic's
l
a. REMOVAL
Remove pilot valve (1) from emergency valve (13). Remove preformed packing (12) and discard.
b. DISASSEMBLY
(1)
Remove six lockscrews (4) and washers (5).
(2)
Place access cover (2) in a vise. Tap on valve flange (10) and remove access cover and
diaphragm (6) from valve flange.
(3)
Remove retaining ring (7) and discard.
(4)
Remove valve disk (11), washer (8), and spring (9).
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