SUCTION AND DISCHARGE HOSES

Figure 3-8. Removal and Replacement of ERFS Fuel Pump

Figure 3-9. Removal of Suction and Discharge Fuel Hose

TM-55-1560-307-13P AH-1E/F/P/S Helicopter Manual
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TM 55-1560-307-13&P REMOVAL 1. Disconnect electrical harness (1). 2. Loosen nuts (2 and 3). 3. Loosen nut (4). 4. Remove clamps (5). 5. Remove pump (6). 6. Remove nipple (7) and discard packing. NOTE · Install new packing on nipple (7). · All 4 pumps on the system can be removed using same procedure. INSPECTION 1. Visually inspect new pump fittings for thread damage. 2. Inspect thread on hose assembly. 3. Inspect wire harness for damage and cannon plug threads before connecting harness plugs. INSTALLATION 1. Install new packing on nipple fitting (7) and install fitting on pump. 2. Install pump (6). 3. Install clamps (5). 4. Install nuts (4), (3), and (2) and tighten. 5. Connect electrical wire (1). 6. Test system for leaks. Refer to Chapter 2, paragraph 2-13, for pressure check. 3-19. SUCTION AND DISCHARGE HOSES. REPLACE HOSE. This task covers: a. Removal. b. Inspection. c. Installation. INITIAL SETUP Tools: Bonney Wrenches Material/Parts: Fuel Hose (22, 23, Fig C-2), Appx C Equipment Conditions: Refer to Figure 3-9. All ERFS tank cam levers CLOSED. All coupling valves CLOSED. All electrical power OFF. GENERAL SAFETY INSTRUCTIONS WARNING ELECTRICAL GROUNDING OF THE HELICOPTER. Army regulations require the grounding of the helicopter when parked and during all fueling and defueling operations. No electrical switches shall be operated except those necessary for servicing during fueling and defueling. No smoking or flame during all fueling and defueling operations. 3-26

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