TM 5-4320-218-15
positioning bracket (23), so that the spring
pump, manually open the automatic discharge
(20) will either hold the valve open or pull the
valve by means of the lever (16). The contents
valve to the closed position. Under most con-
in the discharge hose can then drain back
ditions, the valve should be positioned to close
through the pump and the suction hose to the
automatically when the pumping operation
fuel supply source.
ceases to retain liquid in the pump and suction
hose. This will save time in subsequent opera-
127. Check Valve Replacement
tion by eliminating or reducing the time re-
a. Removal.
quired for priming the pump. When it is de-
s i r a b l e to drain the discharge hose, and
(1) Remove the nuts, bolts, and lockwash-
providing the discharge hose is higher than the
ers at the discharge elbow flange.
7
Cotter pin
13
Key
19
Capscrew
1 Stud
14
Shaft
20
Spring
8
Body
2 Hex nut
9
Pipe plug
15
Woodruff key
21
Setscrew
3 Valve weight
10
Stud
16
Lever
22
Cap screw
4 Setscrew
11
Packing
17
Spacer sleeve
23
Spring bracket
5 Weight arm
18
Washer
6 Shoulder screw
12
Nut
Figure 34. Check valve, exploded view.
