Figures 3-2. M131A5C 5,000-gallon semitrailer (cabinet doors open).
M967 5,000-Gallon Semitrailer. The M967 5,000-gallon semitrailer is a bulk hauler with self-
load/unload capability. It is designed for general highway and limited cross-country use. It has a 5,000-
gallon capacity and weighs 13,000 pounds empty and 46,950 pounds full. The entire vehicle is about 31 feet
long, 8 feet wide, and 9 feet high. The semitrailer can be transported by a C-130 aircraft. It is also designed
to be towed by a 5-ton, 6x6 truck tractor or similar vehicle equipped with a fifth wheel. It has a fording
capability of 24 inches in salt or fresh water without major component preparation. TM 9-2320-356-12&P
gives detailed information on this tank semitrailer. The stainless steel tank body of the M967 is constructed
as one 5,000-gallon compartment with evenly distributed integral baffles. The compartment has pressure
and vacuum vents and a manhole with locking device. There is a walkway on top of the tank body with a
slip-resistant steel grating. A ladder at the front of the tank leads to the walkway. The tank compartment is
connected by piping to the vehicle's fuel receipt and delivery system. This system is mounted on the
roadside of the vehicle. There is a pump and engine compartment, pump engine fuel tank, landing gear
crank, and landing gear ground board on the curbside of the vehicle. There is also a hose trough,
emergency valve shutoff, and two batteries on the curbside of the vehicle. There is a hose trough, landing
gear ground box, toolbox, and control panel on the roadside of the vehicle. There is also a portable
grounding rod and manifold valve on the roadside of the vehicle. The auxiliary engine and pump assembly
are located in the curbside equipment cabinet. It has a 4-cylinder, 4-cycle, variable speed, air-cooled diesel
engine and a self-priming, centrifugal 4-inch low-pressure pump. The auxiliary engine is started by two 12-
volt batteries connected in series. The batteries are located on the left side of the equipment cabinet. The
engine controls are on the instrument panel located on the roadside of the vehicle. These controls include
an engine preheater switch, engine throttle, and control panel light. The instrument panel also includes a
voltmeter, tachometer, hour meter, oil pressure gage, fuel pressure gage, and pump pressure gage. The
pump is connected to the auxiliary engine by a bearing-mounted shaft. A firewall separates the two items.
The pumping system has a bulk fuel delivery rate of up to 600 GPM and a self-load rate of up to 300 GPM.
M969 5,000-Gallon Semitrailer. The M969 5000-gallon semitrailer (Figure 3-3) is a fuel-dispensing
semitrailer used primarily for refueling ground vehicles. The M969 has the same bulk delivery and self-load
capabilities as the M967. It has a 5000-gallon capacity and weighs 15,000 pounds empty and 48,950 pounds
full. The M969 has the same dimensions and can be towed and transported in the same manner as the
M967 tank semitrailer. The tank body and auxiliary engine and pump assembly are identical to that of the
M967. TM 9-2320-356-12&P gives detailed information on this tank semitrailer. In addition to the equipment
included with the M967, the M969 includes equipment required for automotive refueling and limited aircraft
3-4
QM 5098
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