TM 9-2320-279-20-3
Change 4
25-145
M978 Tanker Maintenance Instructions (Cont)
CAUTION
Do not tear or otherwise damage coupling
gasket during installation. If coupling
gaskets are damaged, piping connections
will leak.
NOTE
Some tanks have V21 check valve. Others
do not.
e. Installation.
(1)
Install two coupling gaskets (1) and (2)
on two pipes (3) and (4).
(2)
Install lower pipe assembly (3) into
bracket (5) with screw (6) and nut (7).
Do not tighten nut.
(3)
Hold V21 check valve (8) in place on
lower pipe (3) and position coupling
gasket (1) over connection.
(4)
Install two coupling halves (9) on
coupling gasket (1) with two screws (10)
and nuts (11).
(5)
Position coupling gasket (2) over
connection of upper pipe (4) and V21
check valve (8).
(6)
Install two coupling halves (12) on
coupling gasket (2) with two screws (13)
and nuts (14).
(7)
Tighten nut (7).
f. Follow-on Maintenance. Install tank filler lid (para 16-49).
END OF TASK
