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TM 10-4930-247-13&P
4-22.
BALL VALVE ASSEMBLY REPAIR
This task consists of:
a. Disassembly
b. Cleaning
c. Inspection
d. Repair
e. Assembly
INITIAL SET-UP:
Tools:
Material/Parts:
General Mechanics Tool Kit (App B, Sect III, Item 1)
Cleaning Solvent (Item 1, App F)
Vise (App B, Sect III, Item 2)
Wiping Rag (Item 2, App F)
Equipment Condition:
Anti-seize Tape (Item 5, App F)
Ball valve assembly removed (para 4-21)
a.
Disassembly. Refer to figure 4-19.
NOTE
Ensure that all parts identified as mandatory replacement parts are discarded and
replaced with new components.
(1)
Place body of ball valve (3) in vise.
(1A) (Model HTARS101) Remove retaining ring (1A) and dust plug (1B) from female coupling (2).
(2)
Remove gasket (1) from female coupling (2).
(3)
Remove female coupling (2) from ball valve (3).
(4)
Remove ball valve (3) from adapter (4).
b.
Cleaning.
WARNING
Dry cleaning solvent, P-D-680, Type III, is potentially dangerous to personnel and
property. Eye and skin protection is required. Avoid repeated and prolonged skin
contact. Wash hands immediately after exposure. Do not use near open flame or
excessive heat. Use only in areas with good ventilation.
Using wiping rags and cleaning solvent, remove dirt and contaminants from all components.
c.
Inspection. Refer to figure 4-19.
(1)
Inspect female coupling (2) for cracks, broken locking arms and damaged threads.
(2)
Inspect adapter (4) for cracks and damaged threads.
(3)
Inspect ball valve (3) for cracks, corrosion, damaged threads and bent or missing control handle.
d.
Repair. Replace damaged or defective components. Replace all mandatory replacement parts.
4-48 Change 4
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