3. Electric System
3-37
3.16.12
Intake air throttles
YANMAR part number:129A00-12900
Installation
：
79.7
±
15.9lbf
･
in. (9
±
1.8N
･
m) [92
±
18kgf
･
cm]
Note:
Be sure to read the precautions before handling the
intake throttle.
The intake throttle is a device that controls the amount
of the engine air intake. Use it for the combustion of
soot collected inside the DPF. The intake throttle is
driven by the DC motor. The ECU controls the
appropriate degree of opening of the throttle depending
on the engine speed and load conditions. Accordingly,
the engine takes in the minimum required amount of air
to increase the exhaust temperature and burn soot
inside the DPF.
Precautions:
･
Do not use a throttle after you have dropped it. Even if
it appears okay on the outside, it may have internal
damage.
･
Do not apply excessive impact or load to the throttle.
･
Do not touch the stop screw part, as it has already been
adjusted.
･
Prevent any foreign matter including oil, dust, and water droplets from entering the air passage
part.
･
Do not remove the sensor cover installation rivet.
･
Consider static electricity and prevent static electric charge of the human body when handling the
throttle.
･
Do not touch the sensor cover terminal directly.
･
Do not touch the throttle valve with your hands when the throttle is energized. Your hands may get
pinched in the valve and get injured.
･
Do not check operation with the installation surface of the throttle unit pointing down, as the valve
protrudes from the installation surface.
･
Prevent water and foreign matter from entering the connector connection part.
PC14040
Characteristics of the intake throttle
PC14041E
Motor
terminal
Sensor
terminal
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