Specifications

TM 9-2330-384-14&P
4-83. PILOT VALVE MAINTENANCE.
a.
b.
Removal
d.
Assembly
Disassembly
e.
c. Cleaning and Inspection
f.
Bench Test
Installation
Equipment Conditions:
Ref Conditions
4-70 Jet level sensor tubing and fittings
disconnected from pilot valve.
Materials/Parts:
l One preformed packing
l One retaining ring
l Dry cleaning solvent (Item 10, Appendix E)
General Safety Instructions:
l Dry cleaning solvent is flammable and must
not be used near open flame. Use only in a
well-ventilated area.
l Compressed air used for drying or testing
purposes must not exceed 30 psi
(207 kPa).
Tools:
l Tool kit, general mechanic’s
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).
4-278