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Figure 10. Filling water tank from hydrant.
Up
TM-5-4210-205-12 Truck Fire Fighting; Powered Pumper; Foam and Water 500 G.M.P.; Centrifugal Pump Power Take Off Driven; 400 Gal. Water Tank 40 Gal. Manual
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Figure 11. Foam tank filling details - continued
e.
Filling
40-Gallon
Foam
Tank
With
b.
Pumping Water From the 400-Gallon Tank.
Concentrate. Refer to figure 11, and fill the 40-gallon
(1)
Water  may  be  pumped  either
foam tank with concentrate.
independently to one, or to all of the outlets after
removing the discharge caps and connecting hoses.
NOTE:
(2)
Prime the water pump from water
ALWAYS FLUSH THE FOAM SYSTEM
AS SOON AS IT IS DRAINED UNLESS
IT
IS
TO
BE
IMMEDIATELY
(3)
Follow steps 4 through 7, figure 13,
REFILLED.
outlined in pumping from suction lift to pump water from
water tank.
DRAINING:
PLACE  A  SUITABLE
CONTAINER
UNDER
c.
Pumping Water From Hydrant.
Refer to
FOAM TANK AND OPEN
figure 14, and pump water from hydrant.
DRAINCOCK.
Note.
If possible, flush dirt from hydrant
before attaching hose.
d.
Pumping Water from the Hose Reels. Refer
to figure 15, and pump water from hose reels.
e
Pumping Foam.
pump foam from foam tank.
20. Draining and Flushing Details
a.
Draining Water Pumping and Lines. Refer
to figure 7, and (drain the water pump, valves, and lines.
b.
Draining the Water Tank. Refer to figure 7,
and drain the 400-gallon water tank.
c.
Draining and Flushing the 40-Gallon Foam
Concentrate Tank. Refer to figure 17, and drain and
flush the 40-gallon foam concentrate tank.
d.
Flushing Discharge Line System. Refer to
figure 177, and flush the discharge line system.
21.
Final Test Before Housing Fire Truck After
Returning From Fire
a.
Perform
daily
preventive
maintenance
services (para. 35).
b.
Close all controls and valves and have
suction caps tight.
c.
Pull primer valve lever and run until
combination gage shows about 15 inches of vacuum in
15 seconds.
Figure 11. Foam tank filling details.
d.
Close primer valve lever and watch gage. If
vacuum falls rapidly it indicates air leakage.
f.
Filling Both Tanks With Foam Concentrate.
Refer to figure 12, and fill both foam and water tanks
e.
Test suction hose by attaching suction hose
with concentrate.
to pump and placing suction tube cap on end of suction
hose in place of strainer and test for leaks.
19. Pumping Details
f.
Repair
or
report
to
direct
support
a.
Pumping Water From Suction Lift. Refer to
maintenance.
figure 13, and pump water from suction lift.
TAGO 6839A
20

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