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TM 10-4320-342-24
3-17. BALL VALVE (200/600 GPM PUMP) REPAIR- continued.
Refer to Figure 3-7.
(g)
Install compression ring (14) and nut (13) over stem (3) and tighten until seals are fully seated, then tighten
an additional 1/8 to 1/4 turn.
Refer to Figure 3-8.
(h)
Align stem (17) as noted during removal.
(i)
Align slot in ball (12) with blade on end of stem (17). Insert ball (12) into valve body (6) If required, turn
stem to align with slot in ball. Make certain that stem blade is in the middle of the ball slot (equal distance
from ends of slot) as shown. Reposition ball, if required.
(j)
Gently press seal (13) into groove in valve body (6).
(k)
Turn stem (17) and ball (12) to open position.
(l)
Apply liberal amount of lubricant to locking grooves and tabs on valve body (6) and insert (8).
CAUTION
Failure to correctly align notch before installing insert may result in damage to
insert or valve body.
NOTE
Locate OPEN and LOCK stamped into valve flange.
(m)
Place seat (14) and insert (8) in valve body (6). Align notch with OPEN mark on valve body (6) so that
breechlock tabs engage correctly. Make sure seal (13) has not been dislodged.
(n)
Install breechlock tool as described in disassembly, para 3-17a. (1) (g), steps 1 thru 5.
(o)
Turn handle (9) to the right until notch in insert (8) aligns with the LOCK mark on valve body (6). If handle
is difficult to turn, further compression of insert (8) by tightening of nut (11).
(p)
Remove breechlock tool from valve body (6).
Refer to Figure 3-7.
(q)
Install bushing adapters (12), backing plate (11), nylon washer (5) and screws (9).
(u)
Install indicator stop (8).
3-25
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