4-4-7. Fuel Transfer to Helicopter Main Tanks

Figure 4-4-2. ERFS II Fuel Control Panel

TM-1-1520-240-10 Army CH-47D Heilcopter (EIC:RCD) Manual
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TM 1-1520-240-10 4-4-4 4-4-5. Restraint System. Each tank restraint system consists of an aluminum frame and straps of polyester webbing with connecting hardware and ratcheting buckles. This system provides longitudinal, vertical, and lateral restraint. The forward, vertical, and lateral restraint ratings are 8g’s and the aft rating is greater than 3g’s. Each of the buckles are con- nected to twelve 5,000 pound tiedown rings on the heli- copter cargo floor. 4-4-6. ERFS II Fuel Control Panel. All transfer of ERFS II fuel into the helicopter main fuel tanks is controlled by the ERFS II Fuel Control Panel (fig. 4-4-2). The control panel is located and mounted on the forward most ERFS II tank facing forward. It has individu- al switches that control the operation of the transfer pumps and circuit breakers to protect each of the pumps in the tank. Illumination is controlled by a dimmer rheo- stat on the fuel control panel and is night vision goggles (NVG) compatible. Electrical cables run from cargo compartment AC and DC utility outlets at STA 358 and 320 to the ERFS II fuel control panel, and from the panel to connectors on each tank. A fuel quantity gauge is installed on the panel to provide readings in pounds of fuel for the individual tanks and their combined total fuel remaining. 4-4-7. Fuel Transfer to Helicopter Main Tanks. a. Manual FUEL/DEFUEL valve in all installed ERFS II tanks – CLOSED. NOTE An OPEN manual FUEL/DEFUEL valve on the transferring ERFS II tank will significantly reduce the transfer rate because of fuel cir- culation inside the tank. An OPEN valve on a non-transferring tank will result in fuel transfer into that tank if it is not full. b. Unisex valves in ERFS II fuel transfer hose as- sembly – OPEN. c. Select the ERFS II tank from which fuel is to be transferred. d. PUMP switch for the selected tank – OVERRIDE. Hold in this position until PRESS LOW light goes out (normally less than five seconds). When released, the spring-loaded switch will return to the ON position and fuel transfer will continue. e. Monitor the helicopter fuel indicators to verify fuel transfer. f. PUMP switch for selected tank – OFF when di- rected by the pilot or when the PRESS LOW light illumi- nates. g. FUEL QUANTITY switch – Set to 1, 2, or 3 for selected tank to confirm desired amount of fuel trans- ferred. 4-4-8. Forward Area Refuel (FARE) Kit Assembly. The FARE kit contains a pump module with a self-priming pump rated at 120 GPM and Flowmeter. The pump can be used to either fuel or defuel the ERFS II tanks. The pump module easily mounts on any one of the tanks when used. A manually operated valve reverses the fuel flow and permits defueling of the hoses after FARE op- eration. Two in-line, multiple cartridge filters capable of filtering out 5 micron absolute particulates are included as part of the FARE kit. The 45 inch x 44 inch x 35 inch container for FARE component storage is secured to the cargo floor (fig. 4-4-3).

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