TM 5-5420-202 -20-1
SYSTEMS OPERATION - Continued
ENGINE FUEL SYSTEM. Fuel flows from tanks to primary fuel filter, through main fuel
backflow valve to engine-driven, vane-type fuel pump that increases fuel pressure to fuel
Fuel from engine fuel pump is filtered through fuel-water separator into
injector pump.
injector fuel pump that delivers accurately measured quantities of fuel under high pressure to
each cylinder.
FUEL
RETURN
LINES
(90 PSI BACK-FLOW VALVE)
ENGINE
FUEL PUMP
PRIMARY FUEL FILTER
(A)
(B)
FUEL BACKFLOW VALVE
FUEL-WATER SEPARATOR
(C)
TA249774
FUEL INJECTOR PUMP
(D)
2-4