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SECTION 2 - OPERATION
2-27
The “+/–(SET)” button will change the setting 10
RPM per momentary push. When the button is
held down, the RPM will continue to move up or
down. However, the dash RPM display will not
keep up with RPM changes when the button is
held down. In this case, it is advisable to
estimate the setting by ear, wait for the dash to
catch up, and fine tune the RPM using
momentary pushes. It is never possible to set
the cruise higher than the c urrent throttle lever
position.
If the last cruise setting was above the throttle
position, the system will remember that cruise
setting unless the “+/–(SET)” button is pressed
in cruise mode. The cruise RPM will return to the
stored cruise setting if the throttle is moved
above that RPM.
The electronic system remembers the current
cruise control setting at all times. The cruise
setting remains in memory after the cruise
switch is turned off, after the engine is shutoff, or
if the batteries are disconnected.
Alternate Engine Speed Overrun -AllN14
engines in 2360 and 2425 tractors have a rated
engine speed of 2100 RPM. Actual high engine
speed, when the throttlelever is placed in the full
forward position, is 2225 +/-- 50 RPM. The
difference between the rated speed and the
actual full throttle speed (125 RPM) is called
throttle overrun (or sometimes referred to as
high speed droop). The 125RPM results in a 6%
overrun (125 RPM ÷ by 2225 RPM = 0.06 x
100%) of the engine in normal loaded operating
conditions when tractor ground speed is below
approximately 18.5 KPH (11.5 MPH).
In situations where engine load is minimal and
tractor ground speed is high above 18.5 KPH
(above 11.5 MPH), the Electronic Engine
Control System will progress to an alternate
engine speed overrun condition. The full throttle
overrun will now be 15% (2450 +/-- 50 RPM)
instead of the normal 6% (2225 +/-- 50 RPM). An
example of this would be a tractor traveling at
12.9 KPH (8 MPH), over the road, with the
throttle lever fully forward and the cruise switch
in the OFF position. Maximum engine RPM
shown on the EICS of the tractor will be 2225 +/--
50 RPM. If the transmission is shifted into a
higher gear and ground speed increases above
18.5 KPH (11.5 MPH), the engine will accelerate
to a new higher speed, with the EICS now
displaying a maximum engine speed of 2450
+/-- 50 RPM.
The alternative engine speed overrun feature of
the electronic engine controls provide a higher
ground speed when traveling over the road with
the tractor.
If tractor ground speed is reduced below 18.5
KPH (11.5 MPH), the system will revert to the
6% normal overrun mode.
IMPORTANT: Loads placed on the engine while
roading (implements, road grade) will affect
tractor ground speed and the alternate speed
overrun feature.