TM 9-2320-272-24-l
1-21. POWER SYSTEM OPERATION (Contd)
Key Item and Function
1 RIGHT TANK (FRONT) VENT LINE - Vents vapors from fuel tank to vent hole in air intake
stack.
2 RIGHT TANK FILLER CAP - Covers fuel filler opening on right fuel tank.
3 RIGHT FUEL TANK - Stores fuel for vehicle use.
4 RIGHT TANK FUEL RETURN LINE - Returns unused fuel back to fuel tank.
5 RIGHT TANK (REAR) VENT LINE - Vents vapors from fuel tank to vent hole in air intake stack.
6 RIGHT TANK FUEL SUPPLY LINE - Directs fuel from tank to fuel filter.
7 RIGHT TANK FUEL LEVEL SENDING UNIT - Electrical signal registers fuel level in right tank
at gauge on instrument panel.
8 LEFT TANK FUEL LEVEL SENDING UNIT - Electrical signal registers fuel level in left tank at
gauge on instrument panel.
9 LEFT TANK FUEL SUPPLY LINE - Directs fuel from tank to fuel filter.
10 LEFT FUEL TANK - Stores fuel for vehicle use.
11 LEFT TANK (REAR) VENT LINE - Vents vapors from fuel tank to vent hole in air intake stack.
12 LEFT TANK FILLER CAP - Covers fuel filler opening on left fuel tank.
13 LEFT TANK FUEL RETURN LINE - Returns unused fuel back to fuel tank.
14 LEFT TANK (FRONT) VENT LINE - Vents vapors from fuel tank to vent hole in air intake stack.
15 FUEL SELECTOR VALVE - Manual control valve that opens fuel flow to engine from left or right
fuel tank.
16 FUEL FILTER/WATER SEPARATOR - Filters water and dirt from fuel.
17 FUEL FILTER-TO-PUMP SUPPLY LINE - Directs fuel from fuel filter to fuel pump.
18 FUEL RETURN LINE - Returns unused fuel back to fuel tanks.
19 FUEL SUPPLY LINE - Directs fuel from fuel pump to fuel injectors.
20 FUEL PUMP - Draws fuel from tank(s) and pumps it through supply line to fuel injectors.
21 FUEL PRIMER PUMP - Purges air from fuel system.
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