(7) attaching valve ends (8) from body (14).
(e) Remove ball (11) and stem (12) with thrust
(d) Remove two body seals (9) and two seats
bearing (13) from body. Separate stem and thrust
bearing.
(10) from body (14).
.
1.
Nut (2 reqd)
5.
Stem seal
9. Body seal (2 reqd)
13. Thrust bearing
2.
Handle
6.
Nut (4 reqd)
10. Seat (2 reqd)
14. Body
3.
Bell washer
7.
Bolt (4 reqd)
11. Ball
4.
Follower
8.
Valve end (2 reqd)
12. stem
Figure 11-23. Ball shutoff valve -- exploded view.
(2) Cleaning and inspection.
2. Check condition of all parts to ensure proper
function.
(a) Each time ball valve is disassembled for
(3) Repair and assembly (fig. 11-23).
repair, discard stem seal (5), body seals (9), two seats
(a) Repair of the ball valve consists of replacing
(10), and thrust bearing (13). Replace with new items.
any parts not considered serviceable. Assemble the ball
(b) Clean all portions of the ball valve
valve using figure 11-23 and the following steps as a
thoroughly to remove spray fluid residue, dirt, lubricants,
guide:
and contaminants.
1. Install thrust bearing (13) on stem
(c) Inspect condition of all parts, and replace
(12). Insert threaded end of stem into body (14) and
any part not considered serviceable. Make the following
through mating hole. Hold stem in position and insert
specific checks: 1. Check threaded parts for crossed or
ball (11) into valve body. Align slot on ball to engage
otherwise damaged threads.
stem (12).
.
11-40
