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TM 10-4930-250-13&P
(4)
If handle assembly (3) requires repair, remove socket head screw (6), spring (7), and knob (8) from handle (9).
(5)
Hold valve ball (10) with thumb and remove socket head screw (11) from handle-side shaft (12).
(6)
Install one screw (5) in the handle-side shaft (12) and pull shaft (12) from housing (13). Remove and discard 0-
ring (14).
(7)
Remove and discard O-ring (15) and bushings (16) and (17).
(8)
Hold valve ball (10) with thumb and remove socket head screw (18) from attaching-cable-side shaft (19).
(9)
Re-aching in the inlet end, rotate the valve ball (10) by hand and remove it from the housing (13).
(10)
Push out the attaching-cable-side shaft (19). Remove and discard bushings (20) and (21) and O-rings (22) and
(23).
(11)
Use pick or scribe to remove seal wire (24).
Avoid scratching or gouging beveled edge of seal retainer (25) under seal wire (24), or
any sealing surface. Gouges or burrs may cause the valve to malfunction.
(12)
Use pick (or scribe) to remove seal retainer (25). Insert pick between inner edge of retainer and seal, work
down to bottom of retainer, rotate under retainer and lift to unseat and remove retainer. Repeat this process all
around inner edge of the retainer until it is free.
(13)
Remove and discard seat (26).
(14)
Remove the bumper (27) by hand.
(15) Remove screws (28) and lug (29).
(16) Remove screws (30) and lug (31).
(17) Remove screws (32) and lug (33).
(18) Remove screws (34) and lug (35).
b. Inspection.
(1)
Inspect all metal parts for dings, gouges, abrasions etc. On all parts except the ball (10), use 320 grit paper to
smooth and remove sharp edges. If ball (10) is damaged (scratched, gouged, etc.) it should be replaced.
(2)
Check the groove (round bottom) in the inlet for burrs on the comers. If groove is worn such that buffs
exist, use 320 grit paper to smooth and remove sharp edges.
(3)
Inspect the small spring-loaded continuity ball (36) located in the face of the unit. Push the ball in and be sure
that it pops back into place. Replace entire coupling if continuity ball does not pop back out.
(4)
Inspect screw (6) and handle (9) for damage. If either part is bent, replace it.
5-4
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