FUEL PUMP ASSEMBLY SERVCE/TEST/REPLACE_(CONT).
The actuator is located between fuel shutoff
valve and engine block.
Apply 24 Vdc across the two terminals (1 and 2) on
The actuator will make a loud click when the
actuator shaft hits the internal stop.
Remove voltage from actuator terminals. This allows
the force of the springs to return actuator shaft to its
A click must be heard when the voltage is
removed. If the actuator does not click as if it
is not operating or operating slow, notify
general support maintenance.
Resistance value of fuel shutoff valve (1) should be
between 28 and 32 ohms. If resistance is not as
indicated, replace fuel shutoff valve.
Clean fuel pump and surrounding area before
removing it from engine.
Tag and remove wires to fuel shutoff valve (1), fuel
pressure sensor (2), and actuator (3).
Remove fuel drain line from cylinder head (4), gear
pump suction line (5), fuel supply to injectors line (6),
and speed sensor (7).
Remove four bolts (8), lockwashers (9), washers (10),
and nuts (11) and remove fuel pump.