PART B - EQUIPMENT LAYOUT
Lay out the HTARS (Figure 7-2) in a manner most practical for the situation. Avoid obstacles and take
advantage of terrain features. When laying out the equipment, never remove a dust cap until you are ready
to make a connection. This will prevent dust or particulate matter from entering the system and causing fuel
contamination. Likewise, when disassembling cap equipment immediately after uncoupling. When laying
out the HTARS follow the procedures below.
Position Vehicle. Select the most level ground to position the M978 HEMTT tanker. Avoid areas near
bodies of water to avoid contamination and use the highest ground possible to prevent vapor accumulation.
When positioning the vehicle remember the system should be laid out so that helicopters can land and refuel
into a headwind or crosswind. Make the most use of natural concealment. Position the vehicle to allow easy
exit without blocking any exits. After positioning vehicle, drive a ground rod at least 3 feet into the ground,
attach the vehicle ground cable to the ground rod, and position fire extinguishers within easy reach, and post
the "NO SMOKING" signs.
Connect System Components. Connect the 3-inch by 50-foot discharge hose to the suction hose on
the HEMTT tanker (the tanker suction hose is connected to the bulk receptacle filtered on the HEMTT
tanker). Connect the T-to the 30-inch discharge hose. Roll a 2-inch by 50-foot discharge hose from both
sides of the T-and connect both discharge hoses to the T. Connect another T to the end of each 2-inch
discharge hose. Roll out and connect two 2-inch by 50-foot discharge hoses to each outer tree. At the end
of both outer 2-inch discharge hoses, connect an elbow fitting. Unroll and connect a 2-inch by 50-foot
discharge hose to each of the two Ts and elbow fittings. Put FLOW handles in flow position after
connections are made.
NOTE: The unisex fittings will not connect if the FLOW handles are in the flow position.
Connect Nozzles. Connect the type of nozzle to be used for the operation to the 2-inch discharge hose
at each point. The CCR and D-1 nozzle connect to the 2-inch discharge hose. The overwing (open-port) and
recirculation nozzle mate to the outlet of the CCR nozzle. Refer to TM 5-4930-235-13&P (Operators, Unit,
and Intermediate Direct Support Maintenance Manual and repair Parts and Special Tools List for Closed
Circuit Refueling Nozzle Assembly, Model Number 125-10,000 and Model Number 125-0505) for information
Ground Equipment. Drive a grounding rod into the ground 10 feet back from the end of each
dispensing hose. Loop the dispensing hose at each point back to the ground rod and hang the nozzle on the
ground rod hanger. Connect the clip of the nozzle grounding wire to the ground rod at each point. At each
point, place a CO2 or dry chemical fire extinguisher. Also, place a spill container and a filled 5-gallon water
can at each point.
Camouflage Equipment. Camouflage the truck and system to the extent required by the tactical
situation. Natural concealment such as woodlines, hedgerows, vegetation, and natural terrain contours
should be used when possible. Straight lines of the hoseline can be broken up by breaking branches and
placing them under the hoseline to hold the branches in place