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TM 5-4320-305-10
1-9.
LOCATION AND DESCRIPTION OF EXTERNAL COMPONENTS (Continued)
DISCHARGE MANIFOLD ASSEMBLY (3). This assembly controls the liquid pumped out of the pump body discharge
port. The manifold is attached to the discharge port flange at the top of the pump body. It is supported by this connection
and support brackets on the trailer frame. The assembly consists of a gate valve, a check valve, an air valve,
connective piping, and a victaulic coupling flange.
FUEL TANK (4). The fuel tank contains a 20-gallon supply of diesel fuel for the engine. The tank is mounted to the rear
third of the trailer frame, just below the engine. The tank includes a filler cap, fuel gage, and various fittings for fuel
lines.
NOISE SHIELD (5). The noise shield reduces pump and engine noise at the operator's position in front of the control
panel. In addition, the shield reduces vibration of the control panel and supports the front portion of the fabric cover.
The base of the shield is mounted to the front of the trailer frame, and to the supports of the control panel.
SUCTION ASSEMBLY (6). This assembly controls the liquid supply to the pump body suction port. The assembly is
secured to the suction port mounting studs at the front of the pump body. It is supported by this connection and support
brackets on the trailer frame. The suction assembly consists of a gate valve, a strainer assembly, connective piping, and
a victaulic coupling flange.
TRAILER ASSEMBLY (7). The trailer assembly is a mobile mounting platform for the components of the centrifugal
pump unit. The trailer assembly consists of a welded frame and axle assembly with a rated capacity of 5200 pounds
(2360 kilograms). The two-wheeled axle assembly is attached to the trailer frame by leaf springs with shock absorbers
for stability. The trailer has hydraulic inertia brakes that operate when the unit is being moved. When the trailer is
parked, snap-over-center hand brakes are set by the operator. The trailer chassis is equipped with taillights, stoplights,
and reflectors.
FRONT JACK ASSEMBLY (8). When the pump assembly is not connected to a towing vehicle, the front jack assembly
is adjusted to support the trailer tongue. Along with the rear jacks, the front jack stabilizes the pump assembly during
operation. The front jack is a crank-operated tripod jack with a pad for extra support.
TOOL BOX (9). Centrifugal pump unit accessories are stored in the tool box. It is attached to the left side of the trailer
frame, in front of the battery box.
PUMP ASSEMBLY (10). The pump assembly uses the turning force of the engine to pump liquid from the suction port to
the discharge port of the pump body. The pump assembly is a single-stage, centrifugal pump which is self priming after
initial filling. The pump body portion of the assembly is mounted to the front portion of the trailer frame. The bearing
housing portion of the assembly attaches to the engine bell housing and flywheel.
BATTERY SYSTEM (11). The battery system components supply dc power to the starting motor, control panel, and
electrical system. The components include a battery box, two 12-volt batteries, a charging receptacle, and connecting
cables and wires.
REAR JACK ASSEMBLY (12). When adjusted to firmly contact the ground, the two rear jack assemblies stabilize the
pump assembly during operation. Each jack is crank operated and equipped with a pad for extra support.
OIL DRAIN ASSEMBLY (13). The oil drain assembly is an extension of the engine oil drain. It makes draining the
engine oil easier. The drain assembly is located below the engine and projects from the rear of the pump assembly.
1-7
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