TM 5-3825-226-24
WATER STOWAGE AND DELIVERY SYSTEM
The water stowage system consists of a 2500 gal.
main tank and 100 gal. holding tank for pump priming.
A 30 in. dia. manhole with quick open hatch cover
provides main tank access. Water level is indicated by
a sight gauge (next to ladder) and by a low water level
sensor inside the tank. The sensor is wired to an
indicator lamp on the air cylinder control panel.
A self-priming 4 x 4 water pump provides pressure
for suction loading and spray delivery. The pump is
charged by opening the priming valve on the holding
tank. A gear-type hydraulic motor drives the pump.
Pump-motor
coupling
is
provided
by
a
bracket
assembly, consisting of the impeller shaft, impeller shaft
bearing and related parts.
Pipe joints are welded or connected by anti-vibration
couplings. Water routing is controlled by 3 in. and 4 in.
butterfly valves, operated by air cylinders. The air
cylinders are activated at the tractor-mounted control
panel.
WATER DELIVERY
Two modes are available for water delivery through
the two spray bars: Pressure feed (both bars); gravity
feed (lower bar only). Right and left spray heads on
each bar are controlled by levers at the control panel.
Spray direction can be adjusted with a hand lever at
each head.
SPRAY HEADS AND SUCTION INLET
1. Spray head.
2. Hand lever.
3. Anti-vibration coupling.
4. Suction inlet.
A 1-1/2 in. dia., 75 ft. hose is also provided for
water delivery. Flow to hose reel is controlled by an
ON-OFF ball valve near the reel swivel joint. Hose
spray pressure is adjusted by a shutoff valve at the hose
nozzle.
SUCTION LOADING
The main tank can be filled through the manhole or
can be suction loaded utilizing the pump. Two 15 ft.
sections of suction hose are provided. The suction hose
foot valve prevents entry of air or debris into suction
piping. The inlet to suction piping is below the lower left
spray head.
WATER DELIVERY AND SUCTION HOSES
1. Hose reel.
2. Ball valve.
3. Suction hose.
4. Foot valve.
WATER TANK INTERIOR CLEANING
The tank must be cleaned before stowage of potable
water. It must be re-cleaned when maintenance is
performed that might contaminate the tank interior.
WARNING: Compounds used in this procedure
will injure skin and eyes. Adhere to manufacturer's
warnings, cautions and instructions. Do not inhale or
swallow chemicals. Avoid contact with eyes and
mucous membranes and prolonged contact with skin.
5-21
