Fuel Pump; Fuel Solenoid; Engine Low Oil Pressure Switch; Engine Oil Temperature Sensor - JLG E450A Service And Maintenance Manual

Fuel Pump

The fuel pump runs in parallel with the fuel solenoid hold
coil which is run by the fuel control relay.
The pump runs whenever the engine runs, and keeps the
fuel filter filled. Excess fuel flows through the return line
back to the fuel tank.
The fuel pump is located on the right side of the engine.

Fuel Solenoid

The fuel solenoid actuates the run/stop lever of the engine.
This solenoid has a pull coil energized by the start control
relay and a hold coil energized by the fuel control relay.
The fuel solenoid is located on the right side of the engine.
3121714
SECTION 3 - CHASSIS & TURNTABLE

Engine Low Oil Pressure Switch

The engine is equipped with a low oil pressure switch. This
switch is closed when the oil pressure is below 7psi. It is
mounted on the side cover.

Engine Oil Temperature Sensor

The engine oil temperature sensor is used to sense the
temperature of the oil in the sump of the engine.
This sensor provides an analog signal to the engine/gener-
ator controller. The primary use of this signal is for high
3-67