TM 5-3805-291-23-1
THEORY OF OPERATION - CONTINUED
0003 00
ENGINE - CONTINUED
d.
Fuel Injector Mechanism. Fuel injector pressurizes fuel. Correct amount of fuel is then injected into cylinder
block at precise times determined by ECM. EFI is operated by camshaft lobe and rocker arm. Camshaft has three
camshaft lobes for each cylinder. Two lobes operate inlet and exhaust valves and one lobe operates EFI mecha-
nism. Force is transferred from EFI lobe on camshaft through lifter to pushrod. Pushrod force is transferred
through rocker arm assembly to top of EFI. Adjusting nut allows setting of EFI adjustment.
427-C1734
0003 00-15