TM 9-2320-279-20-3
M978 Tanker Maintenance Instructions (Cont)
25-3. 2500 GALLON TANK/DRAIN (CONT).
l
l
25-8
(4)
(5)
(6)
Remove plug (5) from filter-separator cover (6).
Pull out on V6
FUEL/DEFUEL CONTROL
VALVE handle (7).
Remove HAV HAND
ACTUATED CONTROL
VALVE (8) and hoses (9)
from pump module.
NOTE
Filter-separator may
contain 20 to 30 gallons (75
to 115 liters) of fuel.
HAV HAND ACTUATED
CONTROL VALVE lever
must be squeezed through
step (25) for fuel to drain.
(7) Squeeze and hold lever (10).
(8) Open V15 DRAIN
VALVE (11).
(9) Remove filter-separator elements (para 23-3).
NOTE
Continue with step (10) after fuel stops draining from primary pump and
filter-separator.
(10) Close V15 DRAIN VALVE (11).
(11) Push MC MANUAL CONTROL EM VALVE lever (1) full forward and down to CLOSE position.
