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TM 07661B-14/1
APPENDIX A
Figure A 3-20. Shutoff Valve Assembly
A 3-34. PURGE AND CHARGE VALVES. (figure 3.21)
a.
Disassembly. To Disassemble ball valves, use the following procedure:
(1)
Put handle of valve in OFF position, hold handle to prevent stem rotation, then remove locknut (2). Lift
handle from valve stem.
(2)
Clamp valve in vise and remove packing nut (3).
(3)
Clamp body of valve in a vise with adapter (8) end up. Turn the adapter (8) counterclockwise to remove
from valve body. The ball (10), along with teflon seats (7) and body seal (8) can now be removed from valve bore.
(4)
Push valve stem (6) down into body cavity and remove from adapter end of valve., Remove thrust washer
(5).
(5)
Remove packing (4) from body.
b.
Assembly.
(1)
Put thrust washer (5) on stem (6). Insert stem through adapter end of body and into its bore.
A 3-44
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