Fuel Injection Components - Manitowoc Grove 5540F Service Manual

5540F/YB5515 SERVICE MANUAL
TPS Sensor
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4. Throttle Position Sensor Figure 6-15
The Throttle Position Sensor (TPS) signal is used to
provide an indirect indication of engine load. It may also
be used for governor feedback control. This sensor is
located in the throttle body.
A potentiometer in the accelerator pedal Figure 6-16
regulates the speed of the engine and is connected to
the throttle position sensor by an electrical wire
assembly.
Accelerator Pedal
p1516
5. Oxygen (O2) Sensor
This sensor is installed in the engine exhaust and is
used to control exhaust gas emissions.
GROVE

Fuel Injection Components

1. Coarse Fuel Filter Figure 6-17
Located between the fuel tank and the fuel pump, this
4 0 m i c r o n f i l t e r p r o t e c t s t h e f u e l p u m p f r o m
contaminants in the fuel supply.
2. Fuel Pump Figure 6-17
The fuel pump is located between the coarse filter and
the fine fuel filter and is operated by the crane's
electrical system. It is a high pressure pump and its
pressure must be maintained at a constant pressure to
feed the fuel injectors and allow air/fuel ratio control.
3. Fine Fuel Filter Figure 6-17
Located between the fuel pump and the engine, this 10
micron filter protects the fuel injectors from contaminates
that are either too small to be filtered by the coarse fuel
FIGURE 6-15
filter or are released by the fuel pump.
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4. Fuel Injectors
FIGURE 6-16
One fuel injectors is used in the fuel injection system. It
injects gasoline only.
Published 10-21-2010, Control# 198-04
ENGINE AND ENGINE SYSTEMS
Fuel Lines
6
FIGURE 6-17
6-15