TM 9-2320-279-34-3
M978 Tanker Maintenance Procedures Instructions (Cont)
(17)
Install washer (27) and retaining
ring (28) on shaft assembly (19).
NOTE
Do step (18) for Model A. Do step (18.1)
for Model B and continue to step (20).
(18)
Position top bracket (29) on flow
valve body (18) and install four
screws (30).
(18.1) Position collar (31) and
bracket (29.1) on flow valve
body (18) and install four
screws (30).
(19)
Position collar (31) on shaft (19) and
aline holes.
(20)
Install pin (32) through collar (31) and
shaft (19).
NOTE
There are two models of butterfly valves.
Model A can be repaired. Model B cannot be
repaired. Refer to TM 9-2320-279-24P for
identification of valves. Do steps (21) through
(28) for Model A. Go to step (28.1) for Model B.
(21)
(22)
Install plug (33) in valve body (34).
Install preformed packing (35) and
gasket (36).
(23)
Install two preformed packings (37 and
38) in seat (39).
(24)
Position disk (40) in seat (39).
(25)
Install seat (39) in valve body (34).
22-74 Change 3
