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TM 10-4930-229-12&P
4-13. Valve Assembly, Butterfly.
This task covers:
a. Repair
b. Replace
INITIAL SETUP
Tools:
General Safety Instructions:
Tool Kit, General Mechanic’s, Item 1, Section III,
Appendix B
l
Materials/Parts:
Gaskets, Appendix F
Sealing Compound, Item 3, Appendix E
l
Equipment Conditions:
FARE shutdown, para 2-12.
Inspected, para. 3-7
WARNING
Do not smoke or use an open flame in the
vicinity of the FARE, failure to comply may
result in personnel injury.
Drain any fuel into suitable container. Clean up
any fuel spills to prevent fire or environmental
hazard.
a. Repair. (figure 4-3)
(1) Disassembly.
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Check butterfly valve lever for ease of operation, and damaged or missing parts.
WARNING
Cleaning solvent, Federal Specification PD-680, is toxic and flammable.
Use only in a well-ventilated area. Avoid prolonged breathing of fumes.
Keep solvent away from flames. Do not use in excessive amounts.
Avoid skin contact.
Clean butterfly valve with cleaning solvent, allow to dry.
Remove setscrew (1), handle (2) and cap (3) from shaft (4).
Remove two screws (5).
Pull shaft (4) straight out, then remove disc (6).
Remove non-metallic washer (7) and metallic washer (8) from shaft (4).
Remove O-ring (9) from valve body (10).
Remove pin (11 ), then remove shaft (12) and O-ring (13).
4-14
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