TM 10-4610-243-13
4-24.
BUTTERFLY VALVE ASSEMBLY REPAIR - cont.
e.
Assembly.
Butterfly valve assembly. Refer to figure 4-17.
(1)
Install sleeve (18) in body (19). Aline holes in sleeve with holes in body (19).
NOTE
Bottom hole in disc is round and smooth. Top hole is slotted to fit on
end of top stem.
(2)
Push disc (17) into body (19) Aline holes in top and bottom of disc with holes in sleeve (18) and body
(19).
(3)
Install o-ring (16) and bottom bearing (15) on bottom stem (14).
(4)
Push bottom stem (14) in through bottom of body (19) and into bottom hole in disc (17). Aline spring
pin hole in stem with spring pin hole in body.
(5)
Using punch, drive spring pin (13) into body (19) and through bottom stem (14).
(6)
Install o-ring (11), top bearing (12) and o-ring (10) on bottom of top stem (8).
(7)
Install seal (9) on top of top stem (8).
(8)
Aline end of top stem (8) with hole in disc (17). Push stem and attached parts through body (19) and
into slot in disc (17). Make sure stem is fully seated in disc.
(9)
Install top seal (7) in bottom of stop plate (6).
(10)
Position stop plate (6) on body (19) and install two socket head screws (5).
(11)
Rotate disc (17) to open position.
(12)
Position handle (3) and attached spring (4) on top stem (8) so that handle is in line with disc (17).
NOTE
Press handle down against spring to aline holes with top stem.
(13)
Install pin (2) through handle (3) and top stem (8). Secure pin with cotter pin (1).
Butterfly value installation. Refer to figure 4-16.
NOTE
Make sure gasket is fully seated in coupling groove.
(14)
Install gasket (9) in female coupling (12).
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