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TM 10-4930-241-13
4-22. BALL VALVE ASSEMBLY (4-INCH) REPAIR - cont.
(6)
Disconnect dust cap (11) and remove gasket (12).
(7)
Remove male coupling half (13) from valve (7).
(8)
Using extension (25), set valve to closed position.
(9)
Remove nuts (14) and bolts (15).
(10)
Separate pipe end (16) from body (36).
(11)
Remove body seal (17) and seat (18) from body (36).
(12)
Separate pipe end (19) from body (36).
(13)
Remove body seal (20), seal retainer (21) and seat (22) from body (36).
(14)
Pull ball (23) from body (36).
(15)
To aid assembly, mark and record location of stop (28) on body (36).
(16)
Remove bolt (24), wrench block (26) and extension (25) from top of stem (34). Slide extension from
wrench block.
(17)
Remove retaining nut (27) and stop (28).
(18)
Push stem (34) down into body (36), then remove from body.
(19)
Remove follower (29), stem seals (30) and centering washer (31).
(20)
Remove centering washer (32) and thrust bearing (33).
(21)
To aid assembly, mark location of stop screws (35) on body (36). Remove two stop screws.
b.
Cleaning.
WARNING
Dry cleaning solvent, P-D-680, Type III, is potentially dangerous to personnel and equipment. 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.
4-32
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